Having problems with your 2001 Chevrolet Cavalier ?

Why the rpms bounces when coasting a makes the head lights go dim almost stalling but goes back to normal when getting to coming to a stop

Posted / edited by AnonymousUser on : 19-02-2018

Answers :

If It fuel injected I Presume that it is there are two ushual things it can be, air leak to the manafold and or cracked or broken vacume pipe.
\015\012This will cause less air to pass through the air meter,hence the engine will run weak and will cause this problem.... it is called "HUNTING" now with an old caberetter system they only hunt while the mixture is weak, However on the outher hand a fuel injection system will hunt weater it is weak or rich!
\015\012so if all is well then you will need a CO meter (meshures carbon monoxide from exhaust) as setting by ear is not really a good idea, as ars a rule of thumb... most systems these days run between 1%co and 2%co best set to around 1.5%Co if you don't know the settings.
\015\012TIP:if you think you have an air leak,spray a little carb clean in the suspect aeria, it will **** it in and the engine will burn it causeing it to rev up slightley on it's own,thats a trick I thought up years ago' never let me douwn yet!
Sounds like one of two things or possibly both>
\015\012Either low batery power that means either batery needs replacing or more likely the alternator needs replacing.
\015\012It is misfiring and either plugs are failing or service on injection system needed.
\015\012Try the Batery and Aletrnator first, most auto factors will do a FREE battery/Alernator test.
Repair Help & Product Troubleshooting for 2001 Chevrolet Cavalier

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