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Car Starting Problems

Some of the common car starting problems stem from a discharged battery, a bad fuel pump (or no fuel), a weakened starter motor, or a broken electrical connection. Checking each part will help troubleshoot why the car won’t start.

5,524 Questions

What happens if you put jumper cables on backwards?

Could blow up the battery, probably burn out one of the main fuses or fuseable links, could mess up the computer or any part of the electrical system of either or both cars.

If by 'jumpstarting the car backwards,' you mean pushstarting the car (with manual transmission) in reverse, then no harm should be done. However, it is often more difficult to start a vehicle by pushstarting in reverse, so whenever possible try to start it in 2nd or 3rd gear forwards.

Why would a car stop running while driving then not turn over again?

Here is some advice from contributors:

  • Sometimes your car will just plain stop running if you have a faulty coil wire. I had this problem before where it didn't matter what time of day or the weather, it turned out to be a coil wire.
  • I have an automatic '94 Nissan Sentra that would stop at the strangest of times (while it was being driven) at least once or twice a week. It would drive me crazy. I would take a turn at a light, and right in the middle of the turn, the *car's power would go out and stop. The only thing that would work was the brakes (thank God!). And then I had to quickly start it up again and pray that it would get me home. This was especially embarrassing when I had a date in the car. Does this sound familiar? Well, I found out it was an electrical problem, as well as a fuel pump that needed to be replaced. Cost me a good $300 to fix. That was about 2 years ago so I'm sure prices haven't changed much.
  • My car used to just stop in the middle of the road, and then could restart no problems. It turned out to be that the alarm was old & faulty & the alarm was connected to an immobilizer which was a bit over-zealous - hence immobilizing in the middle of the road. The solution was simply to remove the alarm (the whole thing had to be removed though, it wasn't good enough just to turn it off).
  • Because the gasket plate (insulator) is worn out, this happened to my 1984 Honda Accord. .
  • I have a 96 dodge caravan and it would do some of the same things. Sometimes it would not start in the morning wait a few min. and then it would start, sometimes it would just cut out while driving. The solution after all the relays were changed was a new computer. It was covered under a Chrysler 8 year warranty. lucky me as it saved me $1000.
  • I had my 92 Oldsmobile fixed it turned out to be torque converter needed to be replaced now the car works.
  • if your alternator goes, no more power the engine will stop...
  • This is a problem with a lot of vehicles that is overlooked for this reason: when a mechanic will hook up their computer and download the codes from the car's computer, the codes will generally tell you the problem the car or truck is having, if the car or truck kicked a code to the computer. Then the car or truck will run through a diagnostic system check and when the system check comes back fine and there are no problems then what?
  • Sometimes the problem can not be found by the computer and the reason is that when the car or truck runs it's system check, everything checks out fine! How can this be when the vehicle just stops running and then starts running after you pull to the side of the road and shut it down for a couple of minutes?The answer is simple.The ignition relay acts like a breaker in a house; when you have a relay that is weak, you will get this problem. But the computer will test it as good because it still is good.It's just weak, making it trip.The reason it will start again is because the relay will automatically reset itself after the relay cools and you are off and running again.To explain the type of reaction your car or truck would experience if this were to happen is as follows:The car or truck will just plain die! no warning!IT WILL NOT spit and sputter like it is running out of gas. Now, a module for the distributor will act the same way, but the difference is that the car or truck will not continue to start after a period of time.My suggestion is a cheap way to fiqure this out: purchase a continuity tester at any local hardware store (they are only a couple of dollars) and check the leads coming from the distributer mod. If it is good, it will light up the continuity tester. If it is bad, it won't. This only works if the car will not run at all because the mod will check good if it is weak as well as the ignition relay.Another way to fiqure this out is to go to a local junk yard and pick up a distributer mod and a ignition relay and it will cost you maybe the better part of $10.00 and you may be worry free as long as you own the car with the used part.But if you feel uncomfortable putting used parts into the ingnition system, then replace one or the other but not both and see which one works and then buy new.
  • Check your computer for trouble codes.Any problem will be stored in the computer,even if it is intermittent.
  • Usually it is some type of fuel pick up problem, or fuel filter. It is possible the engine was slightly flooded, causing it to loose power. This all happened to me when i had an 1987 Corvette. One day i was driving, then it just stalled when i was on a local road. Thank god not on a freeway, cause when it stalled, the steering became locked up. But i did what the manual told me to do, if the engine has became flooded, push the accelerator to the floor and crank the engine. And that go me going again, and strait to the mechanics. It was all in fuel pick up and i need a new fuel filter.
  • Just replace the distributor cap and roter. I had same problem in my Honda accord 98.
  • My car stopped all of the sudden while driving. When I tried to start it, it started but within seconds the engine would turn off. So my car had to be towed. The problem happened to be the ignition switch which eventually had to be replaced with a new one. It cost me about $600.
  • I had a 1990 Honda civic that would not start when the ambient temperature got high. I diagnose it and found that the base of the fuel pump relay situated just behind the dash had a poor solder connection.I re-soldered the connection and it was the end of my problem. Just thought you could possibly have the same problem.
  • Most common problem I have found is the idle control value (aka. idle stepper motor). It sets the idle for the engine control computer. It bypasses the throttle plate. They get gummed up, I believe from PCV fumes.This has caused intermittent low idle/dying and start-up problems. The gum prevents it from responding fast enough. My Porsche had low cold idle. My Tahoe required tap on accelerator to start (usually flick of key). My Range Rover intermittent dying & inconsistent low idle. All idle control valve. FIX: Remove it and clean the spring/plunger with Carb cleaner. Also take cotton swab and clean seating area with cleaner. Sometimes replacement is necessary, mine have ranged from about $45 to $125 depending on vehicle and source.
  • I had a Vauxhall Carlton 2.0i which would stop for no apparent reason. It was driving me mad. Just couldn't find the cause. In desperation, took it to the main dealer. He put in new plug leads, new distributor cap, new plugs, and 'tuned' it. It did exactly the same the next day. Back to the garage.In the end I found it myself. Locate your Fuel Injector Relay in your fuse and relay box. When your car stops, pull this relay out, and tap it sharply. Re-insert it, and if the car starts again, that's your problem. Apparently the inside circuit board breaks down, and a new relay is the only answer. Intermittent faults like this are a total pain. In fairness the dealer gave me a full refund for the work that they had done. someone else.

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Where is the starter on 1982 Mustang?

it's underneath and bolts to the transmission via two bolts. it's the size of a small coffee can. it runs parallel to the oil pan.. it's big. you can' miss it. if you car is having trouble starting, look for corroded wires or a malfunctioning starter realy, which is bolted to the inner fender by the battery. email with further ?'s

Why when you start our car you have to have your foot on the accelerator pedal if not it won't start?

Try servicing the car... Fuel filter/Air filter and housing is the most common culprit. The car basically can't 'breathe' and pushing the accelerator forces the engine to run.

Why does your 1991 Mitsubishi Mighty Max 2.4 truck start up then die right away?

my 87 just had this problem...it was the mass air flow sensor. if its not that try the computer my 86 had the same problem, it was the Mass Air Flow Sensor

Why wouldn't a 2000 Jetta won't start unless jumped?

If the car won't start it is usually the battery, starter or could be the altenator. What are the symptoms when you try to start it, is there any power?

Why will a car not turn over if there is power and the starter and alternator are new?

Internal combustion engines need 3 things to start and run: air, fuel, and spark. First look over all of your fuses, to make sure none of them such as the fuel pump fuse, or the fusable link have burned out. Make sure your battery is not faulty, even a brand new battery could potentially be no good. Check the voltage with your volt or multi meter, it should read around 12.5v. Inspect the cables to and from the battery and alternator, but sure they are properly installed. Check your air induction system, make sure the air filter is nice and clean, no blockages. If your vehicle is equipped with a MAF (Mass Air Flow Sensor) make sure it is plugged in correctly. Likewise if your vehicle is equipped with a MAP (manifold absolute pressure sensor) be sure that is plugged in correctly. Visually inspect the entire length of the intake piping, for loose clamps, cracked piping, or gaps. Once you have completed that if your vehicle has a distributor system, remove the distributor cap and replace it if necessary. If you see any visible damage to the spark plug wires, or the age of them is unknown replace them. Next check your spak plugs for the correct gap as recommended by the manufacturer, be sure they are in good shape before reinstalling them. If the vehicle still will not start, try replacing your fuel filter. This is usually inline, though in some cases it is in the fuel tank itself. Once that is completed turn the key to the accessory position, in most vehicles you should hear the fuel pump turn on and prime the lines for starting. If you do, you should be in good shape at this point.

Your 95 Chevy cavalier overheated and now it won't start you have spark and fuel and heads and gasket are fine?

If a 1995 Chevy Cavalier overheated and will not start, try checking some of the sensors near the radiator. The radiator could be leaking which caused the overheating, and in turn, caused a sensor to get wet in the engine compartment.

Why does my 1997 Jeep Grand Cherokee start fine sometimes other times hard start and cuts off?

I had this problem and found and answer on the internet. Find your computer, mine is next to windshield wiper water bottle. Pull off the plastic cover than unplug the leads to computer. You will see two screws back them out one turn. That is it. Some how the cover is shorting the computer because the screws are to tight, Mine is a 1996 Cherokee Limited.

If your spark plugs are bad will your car start?

your engine will start but run badly on a multi cyl. ie. more than one only 1 plug may be down, not often more than 1 together

Location of crankshaft sensor for 2000 Xterra?

The crankshaft sensor on a 2000 Nissan Xterra is located at the rear of the engine near the bell housing. It continuously monitors the crankshaft and updates the vehicle's computer on its status.

Where do vacuum lines go on a 1994 dodge shadow?

To many to try and go thru on this site, but your Dakota should have the routing on a label that is on the under side of the hood. If not, my Chiltons book in the Emissions chapter starting at page 4-20 has routing diagrams for all of the engines.

Why is your 2002 jeep wrangler squeeling in cold weather at start up?

Check the fan belt it may be tight when cold and causes the whistle until it loosends up when it warms up during use. Can also be caused by the throttle body needing to be cleaned, carbon build up on the IAC motor

How do you get the key to turn for a 2000 Jeep Grand Cherokee Laredo if it is locked into place?

sometimes if you parked with wheels not straight the steering lock will engage and be tight in the steering column if this is the problem, just move the steering wheel a bit so it frees up a little it will only move one way if this is the cause then while holding steering wheel away from where it was, see if key will turn if this doesnt work, get a steering column specialist to come out and fix ignition

My car won't start i put the key in the ignition and it won't come out the lights won't come on what could it be?

It sounds lke the battery. Check the battery cables to make sure they are tightly attached to the battery. Check for debris that may need cleaning off.

My car will not start but it makes a clicking noice when i try to start it. what is wrong?

If the starter is clicking, that's a good sign. Replace the battery and make sure you didn't have a drain on it. This problem could be caused by several things, but a weak battery or bad starter solenoid would be at the top of my list of things to check.

When my 2000 ford focus ran out of gas. why wont it start?

Most likely your fuel filter is clogged from sediment in tank or fuel pump is faulty, to narrow down that fuel pump is not faulty try turning key to on position DON'T START and listen for a soft humming sound from rear of car. If no sound is heard you likely have a bad fuel pump. You may also try pushing on schraeder valve on fuel rail (looks like tire stem for airing tires only on fuel rail, probably has black cap on it like tires or similar) if gas squirts out you are getting gas to engine and must diagnose other problems. Good luck.

I changed the ignition switch in a 2004 Oldsmobile alero why wont it start?

is there spark to the plugs? is there fuel to the injectors? timing correct? check these things in order and deal with each one to find the answer. too many variables at this point, need to narrow it down

I have a 1997 Chevy Astro Van that won't start and I am getting no fuel and no spark?

Try slapping the fuel tank, maybe the pump is gone. also bad for fuel line poppet valves under intakes. These vans will only run on a certain fuel pressure! Any lower and you can have problems. get it checked out fuel pump is in gas tank. To fix the fuel pump, the tank has to be removed (no smoking) ,so some diy mechanics cut a hole in the top above the fuel pump ,so the next time it will be easy.

Starter motor ring gear?

Starter motor ring gear is a large gear cog that fits around the circumference of the flywheel on rear of engine. When the starter motor spins, its 'Bendix' engages this gear to rotate the crankshaft..

ABP INOP light on dash 1994 comaro won't start?

A you sure this light does not say, ABS. ABS stands for Anti-Lock Brakes. If the light is on there is a problem with the ABS system.

A you sure this light does not say, ABS. ABS stands for Anti-Lock Brakes. If the light is on there is a problem with the ABS system.

White smoke coming out of the tailpipe?

White smoke exhaust usually means either a head gasket leak or an intake gasket leak. Both are cheaper to repair sooner than later.

2002 Mercedes Benz E320 turns over but won't start?

Start with the basics, check your fuel filters first . Remove the fuel line from where it comes into the filter (It will be marked In and be located on the bottom of the filter) then have someone look and see when you crank the engine whether or not fuel is coming through the line. If there is no fuel it is a good sighn your pump is bad and needs replacement. However if you have fuel coming through the line replace your gas line on the INside of your filter and test the out going line on the top of the filter or OUT side. If the fuel is not coming out when you crank the engine or is but at a lower / slower rate replace your filter. If your filters are in good working order and your pump is delivering fuel to the lines yet still wont start it could be a senser problem. If it is, you should be getting a check engine light. If this is the case try to get it into a service station and hook into there computer to get the error code. Last thing, if your car was spudering or stalling prior to your starting problem and all of the above is in good order it may be that your pump though working is not delevering enough presure to the lines. I hope this helps a little good luck.

Michael.

Your 94 Ford escort lx 1.9l wont start but all the lights on dash and radio come on is your starter out or if not what could be wrong?

Actually, if the battery is bad it will click or turn over very slowly. If all the electronics work and there is no noise, it is the starter. Take a small hammer and tap very lightly on the starter (sometimes there is a label on the starter, aim there). This is only tempary and you will eventually need to replace the unit. i had this same problem with my ford fiesta the lights and radio still worked but it did not make another sound. it just needs a new battery. hope this is helpfull

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