stumbling prob


would an iac cause stumbling problems while driving or just while it is at idle? what would cause my car to start and then die in like 2 seconds EVERYTIME i start it, unless i give it gas, then it stays running. it cuts out wile driving too, i just cant figure it out.

 

3 things to check

1. TPS Voltage - it should be 0.54VDC +/- 0.01 or such

2. Remove and clean the IAC valve

3. Check your timing

 

tps is fine, my buddy is going to bring his snap-on scanner to work monday for me. how do i check for vacuum leaks? thanks

 

it's kind of a multiple pass method

1) visually check all hoses, clamps, etc. and repair/replace as necessary.
2) use something flammable, like a propane torch (unlit), and go over gaskets. If things smooth out when running over a particular gasket, you've found your leak.

 

would a vacuum leak casue probs all the time, because sometimes my car runs like it should. when i drive my car, and it runs fine, then i park it for 20 minutes or so, and get back in it, thats when the prob gets worse. it bucks like crazy then. i just cant figure it out.