nasty idle :(

[camaroz87]

car shakes at idle its weird i recently had a tune up and oil change but it was fine for the past month now it shakes at idle pretty bad wat can it be i changde the oil filter the pvc valve everything???

[97rs4life]

Re: nasty idle :(

does it clunk when you floor it? Might be a blown out tranny if it clunks when floored or motor mount if during idle mainly.

Also does the car run fine though except the shaking?

[bah]

Re: nasty idle :(

this sounds exactly when i had a misfire surface just the other day, any ses lights, my misfire ended up going away, but thats what it sounds like

[camaroz87]

Re: nasty idle :(

i highly doubt my tranny is blown but there is no SES light and everything is working...its just idle idk what to do should i get it looked at ??

[Dr Todd]

Re: nasty idle :(

Here is one quick cheap way to check for bad plug wires, boots or a short:
Pull into a dark garage or a car wash at night. Look for sparks or arcs of electric jumping from the wires to the engine.

[97rs4life]

Re: nasty idle :(

i highly doubt my tranny is blown but there is no SES light and everything is working...its just idle idk what to do should i get it looked at ??

I didn't mean bad tranny, I ment bad mounts like a tranny or motor mount.

[CDNFB]

Re: nasty idle :(

Could be:

- an EGR valve that's not closing properly.

- dirty fuel injectors. Clean ones improve idle quality substantially.

[xFirex99]

Re: nasty idle :(

Check the plug wires at the coil. I had one post covered in rust but the rest were in good shape. It caused a rough idle & poor gas mileage.

[camaroz87]

Re: nasty idle :(

Could be:

- an EGR valve that's not closing properly.

- dirty fuel injectors. Clean ones improve idle quality substantially.

how would i know if the egr is stuck open and how would i clean the injectors??

[CDNFB]

Re: nasty idle :(

how would i know if the egr is stuck open

Rough idle or failure to idle. :)

The easiest way that I know of to determine if the EGR is not closing properly would be to disconnect the tube that runs from the exhaust manifold to the EGR valve. Cover the tube so you don't get a face full of exhaust. Also cover the EGR port where the tube was attached. Start the engine and see if it runs better. If it does, then the EGR is the culprit. It it does'nt run better, the EGR is not your problem.

The best way to clean injectors is to remove them, clean them, then install them. Search the posts in this forum and you will find lots of techniques to use, all of which will work well.

DZ