" /> Can A Bad Car Battery Cause Electrical Problems

Can A Bad Car Battery Cause Electrical Problems

IMEAN THE GAUGES AS WELL. Most of the time, our instinct to fix an electrical problem is to bang on the dash board a few times and hope whatever it is comes back on. A friend had an ignition interlock device installed in his car a couple weeks ago because of his DUI conviction, and he swears that it is causing problems with it. Acura TSX: Why Won't My Car Start. Over time, car fuel systems may become contaminated with water. This process is most important since. There are a number of potential causes for this problem. Yes, a bad ground wire can cause all kinds of electrical problems in a car's operating system. One of the most common reasons is an ignition system that is leaking high voltage. If you don't see that voltage here, then you probably have a bad battery terminal. It's normal for your battery light to come on and then go out right when you start your car. However, because the battery is part of a larger system connected to other parts of the car, a dead battery may indicate a deeper problem than simply no juice. Dozens of things, other than a bad fuel pump, can prevent an engine from starting. Plug-in hybrid electric car: is a hybrid electric vehicle whose battery can be recharged by plugging it into an external source of electric power, as well by its on-board engine and generator. The battery light is usually an indicator of a failed alternator or bad cables causing low power to your electrical system. Usually the issue is a dead battery, caused when the battery can no longer hold a charge. The alternator, battery, and other electrical systems control much of the functionality of your car - and if they begin to fail, you may experience a wide variety of issues with your car. Replace it, or better yet, bring it to a testing facility. The three most common causes of problems with a golf cart battery charger have to do with the timer units, diodes and bad DC plugs. The most common symptom of bad spark plugs is engine's starting troubles. The electrical components on the bike will only draw the powerr they need from the battery. The issue is most acute in the fuel lines, which feed the individual injectors. Since the battery is the source of electricity for a vehicle, it is no surprise that it is commonly a cause for many automotive electrical problems. They can only handle so much power before catastrophic failure and possibly a dangerous fire occur. Car battery drain is a common enough problem. The only downside I can think of is packing too many plates in the same size could make the battery less tolerant to vibrations and normal flaking with age with ordinary lead/acid type batteries,. Outdated wiring often causes electrical fires. AC voltage creates electrical "noise" that can confuse electronic modules and digital communications. If the alternator is working correctly, removing the battery from the system may cause a spike in voltage output, and possibly frying other components. If the ammeter shows a charge, the problem is in the regulator. The battery light is usually an indicator of a failed alternator or bad cables causing low power to your electrical system. The issue is most acute in the fuel lines, which feed the individual injectors. Problems that might cause your car to act like it has a bad starter solenoid can include: Bad battery - If the battery voltage is low it will be unable to provide enough power to start your engine. Dielectric grease is a very nice, very expensive, non-conductive grease with good heat resistance properties. There is a Volvo TSB about this, the bad voltage regulators were supposed to only appear in 2001 Volvos. As with any chemical reaction, sometimes things can go wrong. Usually the issue is a dead battery, caused when the battery can no longer hold a charge. This video demonstrates the electrical problems we had in our 2011 Tahoe. Now the car runs fine, except I get the service battery charging system warning on the DIC. Car starter problems can render your car useless. The problem: Corroded battery terminal. If you can get the car to a mechanic, have him or her test the battery and charging system with a special tester. If you don't see that voltage here, then you probably have a bad battery terminal. We've come across many cases that are due to the ignition system, a defective speed system, an overheated engine, a bad MAP sensor (that thingy that reads the air and fuel ratio). No one ever checks them. Swollen Battery Case. One of the first indications of a bad electric fuel pump is when the normally quiet hum becomes noticeably loud and impossible to tune out. 3 volts, so if the battery was bad, or going bad, your voltage would be around 10volts. Ether There is a charging problem, a drain on the battery or simply a bad battery. Make sure that any new battery has the same or a slightly better capacity (mAh) and Cold Cranking Amps (CCA) specification than the old one. And everything in the car can shut down, to include gauges. Try to get as much information as possible so that you can get the right parts quickly when you go to the auto store. If the vehicle requires more electrical power than the charging system - alternator - can provide, the battery covers the difference. The battery gives the electrical and computer systems power internally. What Causes Car Batteries to Fail? Driving habits rather than battery defect are often the cause of battery failure. The car battery store is trying to blame for the bad battery. If your battery was running fine the last time you drove and now won't start the car, one of the following problems may be to blame. If you turn the key and nothing happens, check to see if the interior lights came on when you opened the door. Under normal driving conditions, a set of standard spark plugs will usually last about 45,000 miles. I think the culprit has revealed itself as the electric widows; they always function with or without the keys. Bad grounds are probably the biggest cause of electrical gremlins there are. Weak battery can cause ABS glitch Question : THE Antilock Braking System (ABS) warning light on my 2002 Toyota Camry 2. Weak headlights, starter issues, check engine lights and the smell of burning plastic are all symptoms of electrical issues in your truck. Skipping the battery registration process can dramatically shorten the life of a battery in these vehicles, be it an AGM or a conventional battery. I am not sure exactly what kind of load remains on a car battery when the vehicle is off, but there certainly was a significant voltage difference. The complexity of the electrical system on GMC vehicles makes diagnosing battery problems difficult at times. A car battery is basically a chemical reaction contained in a box. Supposedly while you replace a battery, power is meant to be maintained to the car or bad things can happen. Usually the charger can be repaired rather than replaced. A dual or starting marine battery is a compromise between a car and a deep cycle battery that is specially designed for marine applications. Over time, car fuel systems may become contaminated with water. The root cause could be that the alternator isn’t recharging the battery. The complexity of the electrical system on GMC vehicles makes diagnosing battery problems difficult at times. On the road, poor ignition switch contacts could shut the engine off while driving, which could be dangerous. If you turn the key and nothing happens, check to see if the interior lights came on when you opened the door. ” Tal adds that Level 1 may be sufficient for many electric car owners, as well, if they. If the lights come on very dimly, the problem is a weak battery, and you should try a jump start. Found the cause: Next step was to check current draw after replacing the fuse. If the electrical components of your vehicle do not seem to have their original potential, it is recommended that you check your alternator along with them. The Battery Tender keeps the battery at optimum charge level without overheating the battery while monitoring ambient temperature. Given that the cause of the battery drain is not human error, you will need the assistance of a qualified mechanic who can diagnose your car's electrical problems and determine if it's a dead battery or something. In many cases, problems can be fixed and your computer up and running again in a short amount of time. However, sometimes if I drive it hard (even after warming it up) the hesitation will show up. Trying to start your vehicle with a dying battery can cause your car alarm to keep going off. Most maintenance-free (read: replace on death) car batteries tend to last 4 to 7 years. Disconnect the battery negative cable from the battery: this will keep you from making sparks when you do the next step. If you suspect that the battery has a bad cell or two, you can buy a hydrometer from any FLAPS. This means it's important to distinguish between a weak battery and a bad alternator. And for the circuits to be complete and function as designed, everyone has to be grounded to the car. A defective electrical system, Control Unit or a fault on the CAN Bus (Controller Area Network) are also causes that can cause your Mercedes-Battery battery to die. could a automatic car starter cause your car not to start? 1 Answer. Test meter (Voltmeter/Ohmmeter). Always use the correct carbon reamer when changing glow plugs. RV BATTERIES. If moisture gets under the cap, it can cause problems for your car. In modern vehicles, the remote starting key is used which contains a small computer chip inside it. Reversing the polarity on a battery can happen only a couple of ways. If it's SO dead that it's putting an unusually high demand on the alternator to charge it then you may have problems,. Bad Electrical Connection. Usually, when there is a problem with the battery cables , the vehicle will produce a few symptoms that can alert the driver that a problem has occurred and should be serviced. The ignition coil transforms a battery’s voltage into an electric spark. 2 metres wide, which is installed flat along the floor of the car. Especially if the battery, battery cables, alternator,. An electrical problem can often be traced to a single source: a bad ground connection. Bad grounds are probably the biggest cause of electrical gremlins there are. Electrical problems are no fun. I continue to fight with battery problems. Battery faults are the most common cause of breakdowns – especially in the winter. Depending on the circumstances, that could be enough to drain your car battery dead. I am not sure exactly what kind of load remains on a car battery when the vehicle is off, but there certainly was a significant voltage difference. The fact that the battery is a lot bigger then the stock bike battery will not hurt anything. Car batteries typically have a part of the casing that's translucent so you can always keep an eye on your battery's fluid level. If the battery light comes on and stays on while you are driving, the most common cause is a broken alternator belt. Car was sitting for 3 days prior to discovery. This troubleshooting procedure is intended to help you determine the cause of problems with the operation of your windows. One of the first indications of a bad electric fuel pump is when the normally quiet hum becomes noticeably loud and impossible to tune out. Battery voltage should be 12. Check your battery's cables for corrosion and for tight fit at the terminal ends. Not necessarily. And this time of year puts more strain on batteries. On the other hand, if the lights are dim or go dim while trying to start the car, the problem is low voltage in your car's electric system. Probably the most common symptom of a battery problem is no power going to the electronics. Short circuit or bad battery? Testing for car electrical problems. We HATE this car due to mainly the constant dead battery problems. Car Electrical System. If it’s still sending out a strong charge, the battery is likely not the problem. If plugging the Nuvi in causes your battery to drain, there's a problem in your cars electrical system that needs to be fixed. Installing a larger alternator will not fix a bad starter, bad battery, or bad wiring. And for the circuits to be complete and function as designed, everyone has to be grounded to the car. It can even cause a "Check Engine" light. Fixing your battery or alternator can be an expensive repair. The car will continue driving normally. Research common problems with your make, year and model. Honda checked battery and found no problems with battery or electrical system. Drive or run your car for about an hour or so, turn it off, and then restart it. I am not sure exactly what kind of load remains on a car battery when the vehicle is off, but there certainly was a significant voltage difference. One of the most common problems of a faulty alternator is a loosened belt. Even if there is a lot of corrosion build up causing bad connections, the car can still get enough current to the circuit to start up. You need not run to the mechanic for minor issues. Usually, when there is a problem with the battery cables , the vehicle will produce a few symptoms that can alert the driver that a problem has occurred and should be serviced. If the electrical components of your vehicle do not seem to have their original potential, it is recommended that you check your alternator along with them. Diagnosing electrical problems in your car can be tricky business. If you have a weak ankle, you tend to overcompensate and put more weight-and stress-on the healthy ankle. Alternators can go bad suddenly, or slowly over time. Automatic windows make it easy to raise and lower your window, but they can easily be thrown off or reset when you replace your vehicle's battery. Weak headlights, starter issues, check engine lights and the smell of burning plastic are all symptoms of electrical issues in your truck. If you have the occasion to check for electrolysis,. When the engine spins the alternator around, the alternator induces an AC voltage that is converted to DC and used to charge the car's electrical system. Friday, Feb 16, 2018 same problem: dead battery. Take the F&R switch out of the black housing under your seat. Use only clean solvent; even a tiny speck of dirt can foul the points. If you don't have a battery tester, you can still see if the battery is good by jump-starting the car. Let's look at common problems causing a battery to drain and ways to fix them. Not usually found in the DIYers tool kit, a carbon pile battery tester will reveal internal battery problems not normally detected by simple voltage measurements. It extinguishes as soon as the engine is accelerated, and does not light up again until the engine is next started. The car battery store is trying to blame for the bad battery. This won’t happen with electric vehicles, predicts Marc Grynberg,. Automatic windows make it easy to raise and lower your window, but they can easily be thrown off or reset when you replace your vehicle's battery. Bad Wiring. Jumping the car or replacing the battery can solve this problem. When your car won’t start it can be hard to tell if the issue is a dead battery or a bad alternator. A lack of fuel pressure will cause a vehicle not to start but a no-start does NOT necessarily mean the fuel pump is bad. “Experts say EV battery costs could be under $100/kilowatt hour by 2020, and after that, go down to about $80/kilowatt hour. Here is a list of the most common causes of pre-mature glow plug failure: 1. Up to 99% of your car battery is recyclable and can be used to make new batteries and other products. If you have the occasion to check for electrolysis,. Some of these problems can make for a really bad day, and RV battery issues fall into this category. It could be a bad starter, corroded cables, or a broken connection somewhere between the battery and starter. Can a bad cell or something else in the battery cause it to some how turn the defrost switch on. What most people do not see is a similar heavy gauge pow er wire connected to the batteries (-) negative terminal or battery post. This occurs when a component continues to use power from your battery when the vehicle is not in use. If you have a hard start problem, it can be a simple as a loose cable connection. The battery indicator is only in 1 cell there is 5 more that can go bad. If the alternator is working correctly, removing the battery from the system may cause a spike in voltage output, and possibly frying other components. There is a fuse link embedded in the wiring where it connects to the black/orange wiring that can open up and cause problems. A Handy Guide to Troubleshooting Common Car Electrical Problems. Car Electrical System. If your vehicle won't start, it's usually caused by a dying or dead battery, loose or corroded connection cables, a bad alternator or an issue with the starter. In order to avoid this issue, it has become more and more critical that power is supplied to the electrical system while the battery is disconnected, for any reason, including replacement. The good news is that often times what could turn into a major problem is usually just a small problem. If your car stops after the jump cables are removed, then it is a problem with the car battery not charging. If everything is working right, a loss of the battery cable will cause fluctuations in voltage, but shouldn't be a major incident. It can even cause a "Check Engine" light. If your vehicle is drawing power from the battery and all of the lights and other electrical components are off, you might have a parasitic battery drain (or draw). It could be a wiring issue or a problem with the battery itself, but the problem is probably the simplest: you left a light on. This not a one time effect but cumulative. It was confirmed that no lights were left on. When the car is running, the charging system (alternator, voltage regulator) should recharge the battery and provide sufficient electrical power to the vehicle. Reversing the polarity on a battery can happen only a couple of ways. Another item you want to check out is the car battery. A simple test to check the working of the alternator is by running your car; and then unplugging the positive connection of the battery. It is important to monitor the lifespan of a battery and ensure that connections are not corroded during that period. Not that its a bad thing- they CAN explode and people should be careful around them rather than assume that they know when one. When things go wrong with your electric windows, it can sometimes be frustrating to figure out the cause of the problem. Bad Alternator. And on-top of that, the car needs to be re-initialised (some reporting the active steering as well). Made it home and after turning car off, it would not start. It may be time to have a tech fully test them by using a carbon pile battery tester. Let’s cover some of the issues that you could face with your new vehicle’s electrical system: Common Automobile Electrical System Problems Are : Car’s Battery Is Dead – This is the most common problem…and most obvious. If you think you have a bad alternator, diagnose your problems with the alternator testing procedures below. I discovered a cheap 540 CCA Walmart battery in there. Check out the different solutions to the problem. This can keep you from starting. Many people, even professionals, are quick to assume the battery is bad, but this can be a costly assumption if your failing alternator kills your newly replaced battery, too. Never connect an OBD2 Scanner when you have a bad/worn out car battery. but if this happens to you, have a look at these top three reasons before moving on to the rest. In many cases, problems can be fixed and your computer up and running again in a short amount of time. If a home is over 20 years old, it may not have the wiring capacity to handle the increased amounts of electrical. Any one of these symptoms can be a sign of a weak charging system. ” Tal adds that Level 1 may be sufficient for many electric car owners, as well, if they. The constant heating and cooling of the computer, atmospheric conditions and dust can all play a part. Your 55-watt headlamp bulb draws 4 to 5. Some owners of Mk1 MGFs have experienced a few problems with wet weather starting. 2 Amps, and that is OK, but at the upper end of OK, you do NOT have a draw problem. If plugging the Nuvi in causes your battery to drain, there's a problem in your cars electrical system that needs to be fixed. Image: REUTERS/Norihiko Shirouzu - RC19D20C7350. The starter motor requires a. Luckily, you can usually find the cause of a parasitic draw yourself. Note that a new battery may temporarily alleviate symptoms without correcting the original cause of the problem, if the problem is a bad charging system (see next section) or a ground-fault short in a wire (see previous section of this document). A vehicle relies on battery power to operate its entire electrical system, including that of its starting system. There are some sure ways you can tell if your battery is bad by simply taking a good look. Honda checked battery and found no problems with battery or electrical system. Disconnect the battery negative cable from the battery: this will keep you from making sparks when you do the next step. So your engine is idling poorly (shaking, misfiring), and you are not able to accelerate properly. A vehicle electrical system is a 12 volt DC system. It also left me stranded in the middle of the street, downtown, on one occasion. Rising demand for electric vehicles could cause a. It is important to monitor the lifespan of a battery and ensure that connections are not corroded during that period. The 5 Most Common Signs That Your Car S Electrical System Is. Each year consumers dispose of billions of batteries, all containing toxic or corrosive materials. I think I need a new button down by the door, does that sound correct? If so how do I figure out which door needs the new sensor. Usually, when there is a problem with the battery cables , the vehicle will produce a few symptoms that can alert the driver that a problem has occurred and should be serviced. Check your battery's cables for corrosion and for tight fit at the terminal ends. Over Heating Excessive heat in motors can cause a number of performance problems. However, there are four common problems that can cause a battery to drain slowly. Alternator noise is a high pitched whine caused by the car's electrical system. If the low cell does not come up, it's bad and you need a new battery. This silence may be due to electrical issues: A discharged or failed battery; A failed system component (for example, relay or safety switch) Corroded electrical connections (including battery terminals) that prevent electrical current from reaching the starter motor. A 12 Volt car battery can be safely used for this purpose, whether installed in a car or not. During this 10 minutes the inside lights were flickering. The same is true if your car won’t start because the battery is dead. 6v and should maintain the voltage without dropping. I have had no problems with my battery. Sure, we can see the effects of electricity, or the lack of effect in the case of a failure, but we can't necessarily put our hands on it like we can with other vehicle components that might fail. If you can get the car to a mechanic, have him or her test the battery and charging system with a special tester. Car goes dead and 12-volt battery is being drained because faulty computer programming leaves electrical modules on even when the car is turned "off. If plugging the Nuvi in causes your battery to drain, there's a problem in your cars electrical system that needs to be fixed. The alternator is generally a maintenance-free unit, but as with any car part, it can fail. If by leakage from the battery you mean out of the vent/fill caps, your generator is overcharging the battery, and this could be caused by either a bad regulator or a bad generator (grounded field). When your car is running it get most of its electrical power from the alternator. When diagnosing a specific problem, organized troubleshooting is a must. The root cause could be that the alternator isn’t recharging the battery. Fixing your battery or alternator can be an expensive repair. A deep cycle or dual marine battery will work as a starting battery if it can produce enough current to start the engine, but not as well as a car battery. Of course if your battery connections are the problem, the voltmeter will read low, and the battery could be serviceable!. My doors are all closed, and the locks and lights still arm normally. What are some symptoms of a failed or failing voltage regulator? Does it slowly go bad or does it just stop working? Will the car still run with it going bad? I was thinking maybe my recent electrical issues may be related. In both of these cases *added electrical resistance will cause the ignition coil to overheat and fail. More likely your battery is just bad. Please review our article on electrical testing for details on properly probing a circuit. My car starter I believe is the problem, yesterday it would not start and the lights were flashing, disconnected the battery and let it sit for almost a hour, when the battery was reconnected it s. This process is most important since. If you turn the key and nothing happens, check to see if the interior lights came on when you opened the door. While the vehicle was stationary, the battery saver warning indicator turned off and the following message displayed across the instrument panel: "911 assist is disabled, contact dealer". This process is most important since. These issues arise at any time. Given that your Expy is only two years old, a bad battery is not the most likely problem, but given the test results that you have,. What Causes Car Batteries to Fail? Driving habits rather than battery defect are often the cause of battery failure. Pulling fuses until the draw goes away is the best way to find it. Typically a battery is good for three to four years but some last longer, while others don’t. In other words, a bad alternator can get your attention by killing your car's battery, even if the battery wasn't the problem to begin with. We can back probe the connector at the motor, to detect if current flows when we press the switch. Some causes act singly and others in combination. In this article, No-Start Problems, Eric looks at what can be the cause of no-start issues with your vehicle. Car was sitting for 3 days prior to discovery. The bigger the electric car and its range, the more battery cells are needed to power it, and consequently the more carbon produced. In a C5, the concern is increased because a side-terminal battery sits on top of. But even minor corrosion can reduce alternator output by 30 percent. Apparently the crimps in these Chevys, including pickups on the same body style/frame, are notoriously bad and much can be. Otherwise, your problem may be the power distribution at the A1 splice. A burnt smell or smoke coming from the starter motor under the hood is a sign of a bad starter. The battery is what powers your car's electrical system, so if it's bad then the system won't get enough voltage, or the battery may even short out and cause intermittent problems Check the charge on your battery. 6 volts measured at the battery posts, if OK load test battery to determine condition. If your alternator, coil, battery, or starter is bad, the car probably won't start, and it definitely won't be drivable. A parasitic load such as a bad ignition switch drain can cause your battery to be drained completely. When diagnosing a specific problem, organized troubleshooting is a must. Extremely hot weather and overcharging are the two main reasons for shortened battery life, according to the Car Council. This simple device checks the specific gravity of the battery electrolyte in each cell. Test meter (Voltmeter/Ohmmeter). Both can make a starter solenoid to malfunction and cause starter system problems. A friend had an ignition interlock device installed in his car a couple weeks ago because of his DUI conviction, and he swears that it is causing problems with it. And for the circuits to be complete and function as designed, everyone has to be grounded to the car. Starting Problems? How to Tell If It's the Battery or Alternator. Once the alternator stops working, so do all of the electrical systems required to keep a car going. You need to have it tested by your local parts store. Then have a QUALIFIED mechanic check your electrical system for a “drain”. It has been, and is, a superb vehicle but starting to give problems. Task summary: This booklet will help you diagnose and fix common electrical problems in your car. Are Lithium-Ion Electric Cars Safe? temperatures hot enough to melt aluminum and cause batteries to explode, he says. A car battery is basically a chemical reaction contained in a box. When an appliance is plugged into a wall outlet, its wiring effectively becomes an extension of the circuit, and any problems in the appliance wiring become circuit problems. As with any chemical reaction, sometimes things can go wrong. Since the battery is the source of electricity for a vehicle, it is no surprise that it is commonly a cause for many automotive electrical problems. what causes my battery to drain overnight? Parasitic (or ignition key off) drain is the cumulative load produced by electrical devices, for example, emissions computers, clocks, security alarms, radio presets, etc. They're designed to provide your vehicle with enough electrical oomph to start by juicing the starter motor with a surge of power and getting the whole works spinning. I continue to fight with battery problems. To see how frequently Lincoln MKZ problems occur, check out our car reliability stats. Usually the issue is a dead battery, caused when the battery can no longer hold a charge. 5V following short drain (eg run all electrical loads and accessories for 30 seconds with engine NOT running). If you suspect that the battery has a bad cell or two, you can buy a hydrometer from any FLAPS. There are a few things to inspect, such as: a broken terminal, bulge or bump in the case, crack or rupture of the case, excessive leaking, and discoloration. Each battery should be around 8. If the negative battery cable ever becomes excessively damaged or worn out, it will affect the flow of power to the electrical components of your vehicle. Shorting the terminals of a large battery can be quite dangerous. the battery itself is good, or disconnecting it wouldn't make a difference. The car won't start on cold mornings: If you have fuel injection, you need to have a professional diagnose the cold-start problems. Fix those Electrical Problems for your Muscle Car with these Electrical Tech Tips, Check it out in the June 2008 issue of Car Craft Magazine or at carcraft. Car Audio Electrical Basics. 2 metres wide, which is installed flat along the floor of the car. Everything in my car automatically turns off even if I left something on. A car battery is basically a chemical reaction contained in a box. But consider the following thought experiment before you dismiss it out of hand. 8 Signs You May Have a Problem with Your Electrical Wiring Only you can prevent house fires — or at least greatly lower the risk by keeping an eye out for these warning signs of trouble. You should measure 10V-12V here. Low battery voltage can cause all kinds of problems especially on 1986 and newer models that use various electronic computer controls. I have had no problems with my battery. Electrical Systems Can a bad battery harm the charging system or starter? You bet. Each wire in a car has a specific gauge or thickness. When people get electrical problems, they often don’t know whether it’s the car battery or the alternator that’s gone bad. Without starting the car, you can check the battery gauge on the dashboard. There's a lot of misunderstanding about what makes a battery explode. Go through this quick primer on solving electrical problems in your automobile, to get an overview of the procedure. Apparently completely disconnecting the battery from the car is bad for the electronics. If you are having problems getting your car started, then you may be in need of a new starter. A 12 Volt car battery can be safely used for this purpose, whether installed in a car or not. Cause: Over the years, dust, mud, and water can get into the back of the firewall electrical connector and start corroding it. Corroded battery terminals can cause more problems than just poor starting. Ignition faults such as misfires certainly qualify as emission faults and will trigger the MIL lamp and set a code if the rate of misfire is high enough to cause a problem. 2 metres wide, which is installed flat along the floor of the car. Until then, we will still have electrical problems to repair: corroded wires and connectors, bad sensors, reams of fault codes, lighting problems and, ohhh, the emissions systems problems. And in the compressed air system an impact wrench, blowgun, paint gun, or the fitting for filling a tire, can all use power (compressed air) from the system. A vehicle's electrical consists of many parts but the ones we're interested in are the battery, the alternator, and the power wiring. If the tester shows a weak battery, you'll have to replace it. Check your battery's cables for corrosion and for tight fit at the terminal ends. The battery gives the electrical and computer systems power internally. However, it can be easy to misdiagnose electrical problems with your vehicle. With proper charging voltage at the battery, you can rule out a charging problem. This indicates there are electrical problems with the starter's wires and the connections within the starter motor. Charging Problems The first sign of trouble when an alternator is failing is a low or dead battery. yes it could,but usually it will just result in hard starting,and will leave you stranded eventually. Once the alternator stops working, so do all of the electrical systems required to keep a car going. Without starting the car, you can check the battery gauge on the dashboard. After that, it wouldn't start again, and they started looking for electrical problems or anything that could drain the battery. the battery itself is good, or disconnecting it wouldn't make a difference. Electrical problems are no fun.