car has trouble starting after being driven

As far as cold vs warm start just a guess but whatever component is having an issue must be being affected by the raised temperature from the engine saturating it making it not perform as well. This may be from a fuel pressure issue.

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Also check to see what temperature the coolant temp sensor CTS it indicating the coolant to be when this happens and the engine is hot.

. Car batteries can die for a huge range of different reasons and theres always the chance that whatever went wrong wont go wrong again. The most common reason a car wont start is due to a dead car battery or loose car battery terminals. It can also be caused by a bad starter but if it cranks but wont start it could be caused by a faulty spark plug or a clogged fuel filter.

A Bad Head Gasket Might Be Why Your Car Wont Start. It should be in the 135 to 155 volt-DC range. I changed the Coil Pack and it continues to do the same thing.

The alternator should be replaced if its defective. When your car battery dies once it may be tempting to just write it off as a fluke. After twenty or thirty minutes sitting it will start again.

The easiest way to do this is to grab a friend or family member so one person can activate the. The Check Engine light goes on and it will throw CEL PO351 and PO352 for coil pack malfunction. Corroded or loose battery terminal or cable.

If you do not fix the alternator this. Cleaning the ICV may help. That said ICVs are easily fouled by oil from the crankcase ventilation if it doesnt go straight into the manifold.

Since adding throttle helps perhaps something with air or fuel delivery. After a half hour the engine just happens to get to a good starting temperature. Fuel Pump Has Gone Bad The most common reason for a car not to start after it has been sitting for a period is that the fuel pump isnt doing its job.

The fabled blown head gasket isnt something anyone wants to deal with. That could be anything under the hood though. If it cranks but does not start sometimes a temperature sensor is bad and the computer cant figure out the proper amount of fuel to inject.

But when your car battery keeps dying over and over again its a pretty safe bet that theres an underlying problem that needs to be dealt with before. If your car is hard to start when warm you can trace the issue to one or more several potential faulty components for example. Both of these have a history of failing when they are hot and coming back to life again when they are cold.

Vapor lock in the fuel system. If so measure the amount of AC ripple coming from the alternator by changing the meter from DC mode to AC mode. Thats because modern fuel injection systems operate under high pressure that must be maintained.

One thing you can try is when it wont start spray starting fluid into the intake to see if that at least gets it firing until the vapor from that is gone but the better method is the more scientific one of having a fuel pressure gauge to measure it and you can release pressure from the fuel rail valve and see if it builds up again by just pressing it again even without a gauge. When you shut off a warmed up engine fuel pressure needs to remain in the fuel lines otherwise you will get vapor-lock this is when the liquid fuel turns into a gas in the fuel line and a fuel pump can only pump liquid not gas so the engine will not start until the fuel cools down and turns back into a liquid. IMO you have a bad battery or a bad starter.

It starts fine after it sits and cools about half an hour after it is being driven for at least 20 miles or half hour. If the starter is bad and takes more power to spin when hot that takes power away from the ignition and injectors which will make it harder to start. Corroded or loose engine ground connection.

Check All Exterior Lights. Also check for an RPM signal via your scanner to determine if it is related to the crankshaft position sensor. This would explain many of the idling issues you are facing but not the inability to start the car while holding the gas pedal.

Well unfortunately this could mean a damaged alternator. However about 10 to 20 minutes after shutting it off it sometimes has a hard time restarting and running. Theres probably close to a mile of wiring in your car and with the harness being changed out you may have some major sleuthing in head of you until you find all the problems.

Just a little off and the engine wont start. That being said it sounds like you may have an issue with a crank position sensor or an ignition control module. The only solution to this is to fix or replace the alternator.

Engine control system problems. A bad alternator could prevent your battery from gathering enough charge to start your car. The car wont be able to start if the alternator cant provide enough voltage output necessary.

Among serious problems like blowing smoke from the tailpipe and leading to the engine overheating a bad head gasket can also make it difficult to start your car. One last thought you really need to check for spark and fuel to eliminate things. The battery wont restart the car and youll be stuck.

Battery problems can quickly arise from alternator problems. If your alternator is going bad then it will no longer be able to charge your battery. The drive belts that turn the alternator should also be checked for slipping and wear.

Thats a big load. It is also possible that you have a vacuum leak. The alternator is the component that keeps your battery charged.

Before starting your car after it has sat idle for a long time be sure to check your engine oil level. I can drive ten or fifteen minutes park the car and try to start it. Youll start your car drive for awhile and your car will die.

Check that your headlights fog lights high-beam lights brake lights reverse lights and indicators are all working before you head out on the road. The car cranks strong but wont start. Up to 8 cash back Usually if you have a malfunction that prevents the car from starting there will be a code resulting.

When starting the battery has to turn the starter fire the ignition and fire the injectors.

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