car starts but wont stay running unless foot is on gas

A good indicator of this problem is the RPM indicator although this is not always the case. The fuel injectors work at any RPM so a choke is not necessary.

10 Common Causes Of A Car That Won T Accelerate

Usually what happens is you start the car cold and it wont stay running unless you hold your foot on the gas until the engine warms up.

. Car wont stay running unless foot is on the gas. But shell crank and crank but wont start unless I have the throttle wide open. And because several car components may lead to this problem lets diagnose each of them.

The engine requires the right amount of air and fuel to mix together for ignition. Usually what happens is you start the car cold and it wont stay running unless you hold your foot on the gas until the engine warms up. Does anyone have any ideas as to what is going on.

I have a 1996 Jeep Grand Cherokee Limted 52L V8 and if I dont keep my foot on the gas the RPMs immediately drop to zero and the whole car dies. I have replaced the idle air control fuel relay fuel pump and the computer. Up to 8 cash back The fuel injection system does nothing until the engine is turning starting or running so pressing the pedal before you start will make no difference.

Why wont my car stay running unless my foot is on gas. My car wont start in the morning just gives cranks but if I press gas pedal it starts and have to keep it until engine gets hot enough. Withoutknowing if the check engine light is on it could be a variety of things including but not limited to the o2 sensor throttle positioning sensor and the MAF and MAP sensors.

So I just replaced my battery this week but now she wont start or stay running. My truck will die as soon as I let my foot off the gas. Withoutknowing if the check engine light is on it could be a variety of things including but not limited to the o2 sensor throttle positioning sensor and the MAF and MAP sensors.

The alternator puts nothing out if the battery is dead because the alternator requires a 12 volt exciter voltage from the battery for it. Could be a bad fuel pump. Unlike other hard starting problems related to car battery this trouble indicates that either the mixture of air and fuel is not igniting or the engine is receiving an insufficient amount of air and fuel for combustion.

If the battery is at about 11V or less I know the earlier models at least will not stay running without foot on gas pedal. BMW ACURA Honda Lexus Toyota. Up to 8 cash back This is likely as your symptoms do fall into that category because a clogged or malfunctioning idle air control valve may not allow enough air into the engine to maintain a good idle speed.

Up to 25 cash back ok. Hi All I have Mitsubishi lancer 2002 18l auto and having same problems since a year. Car wont stay running unless foot is on the gas.

If your engine starts but wont stay running you want to make an accurate diagnosis as soon as possible. This is usually caused by the idle air control valve sticking. Before the introduction of direct fuel injection most vehicles did not have a sensor to read fuel pressure meaning if the fuel pressure is low or off you will not get a code but you will have poor idle and stalls.

At first it did this once in a while and I was able to fix it by disconnecting the battery and it seemed to run fine for a while. Car wont stay running unless foot is on the gas. Some of the symptoms are.

Making a diagnosis can be hard especially when you dont have much experience in car repair and the source of the problem can be in one of. Car Starts but wont stay running RPM Up and Down. And repeat the problem in the morning when I have to go to work.

Could be a partially blocked fuel filter. Why Car Wont Start Unless I Give It Gas. Could be a bad fuel sending unit.

If there is a fuel leak somewhere then the correct amount of fuel may not make it to the combustion chamber. For fuel issues start by checking the fuel pressure. Best diagnosed by using an OBDII scanner to scan for codes.

Also if you can get the Jeep running put the meter across the battery terminals while running and it should read in the vicinity of 138 to 140 volts. Make sure its responding to signal as well. My truck wont stay running unless I keep my foot on the gas pedal.

But shell crank and crank but wont start unless I have the throttle wide open. This might be enough to allow the engine to start but not keep running. On the old carburetor engines you.

Up to 25 cash back The car starts but wont stay running unless you keep your foot on the gas pedal. A faulty air temperature and engine coolant temperature sensor may also cause the engine control computer to offer an improper fuel volume and. If a modern Jeep has a completely dead battery the engine wont run for long after removing the jumper cables even if you keep your foot on the gas.

The computer simply feeds a little extra gas through the fuel injectors to start the engine. Once she starts she wont idle on her ownI have to keep my foot on the gas. Then it works for almost all day.

Once the battery is charged and its the first time you start it hold the throttle open slightly. Anything would help at this point. I already tried letting it re-learn its idle since the computer was reset.

If it is low look at the fuel pump fuel pressure regulator and injectors.

10 Common Causes Of A Car That Won T Accelerate