Question about 1995 Mitsubishi Galant

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1995 galant i have a rattling in my engine. My car will start but won't keep and idle for long. i have to keep my foot on the gas.and when i switch gears it just dies. HELP!!!

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The rattling your hearing is what we call pre detionation and the culpret is usually the camshaft sensor malfunction or the crankshaft sensor

Posted on Aug 26, 2008

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Wont start


If you can keep giving it gas and it runs above idle with no problem, then you have a blocked or bad idle control valve on the throttle body assembly. With your foot off the gas pedal, the large throttle plate inside the throttle assembly is closed, but some air is let in through the idle control valve or motor through a separate passage. This can get clogged with deposits over time and poor idle results. The valve is controlled by the engine computer. It is how the computer controls idle speed- more air if the idle control valve is opened wider, higher idle speed.

"...like its not getting any gas..." Oh yeah, it's getting gas, the injectors are still pumping gas into the cylinders, but it may not be getting any air. All the accelerator pedal does is control the air supply into the engine through the throttle body. So modern cars have an air pedal, not a gas pedal. Then the computer takes over and matches the correct amount of gas through the injectors to the known supply of air in the intake manifold. Neat system, eh? Sorry if I sound so pedantic, dale. check your idle control valve.

Apr 20, 2014 | 1997 Mitsubishi Galant

1 Answer

1995 toyota corolla, car will not turn over, hs power and wants to turn over, but does not


While the engine is cold, try starting it and giving a little gas while you start it. If it starts, release your foot and see if it keeps running. If it stalls out, start it again (by giving a little gas again) and then keep your foot on the gas slightly to keep it from going to it's normal idle. Once the engine is warmed up, let off the gas and see if it stays running again. If it does then you need to clean/reaplace the IAC valve that is on the throttle body.

If you can, remove it and clean it out with carb cleaner (like B-12) and an old toothbrush. It could save you some money from having to replace it.

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It starts but will not idle. if you take your foot off the gas it dies. sometimes it will run good and i take it around the block it will die when i come to a stop unless i put it in neutral and keep my...


Possible areas of concern are:
  • faulty MAF (Mass Air Flo) sensor
  • bad EGR (Exhaust Gas Recirculator
  • bad TPS
It's most likely a combination of the 3 but the main cause would normally be the TPS (Throttle Positioning Sensor) which regulates engine idle speeds under different conditions.

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have your idle control switch check, easy and inexpensive to replace. The idle control switch is what keep the engine stay idle. also have your throttle body clean by a professional having that many miles, it will give you better gas mileage.

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1 Answer

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1 Answer

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The IAC valve is usually the problem with the 1.9 Escorts ,causing a very poor engine idle at a stop. It is located on the side of the throttle body .

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1 Answer

My car starts when i have my feet on the gas pedal,but turns off when i take my foot off the gas pedal


Is the check engine light on?? If not, I would try base idle adjustment. For that you will have to go to a dealer, because you need a scanner for this operation. Base idle adjustment is done by turning a screw built into the IAC valve, which keeps the car running by giving it air. If your base idle is too low, then the engine is not getting enough air resulting in stalling. Let me know what you find.

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