1. Cleaned Air control valve (the one w/ two 12 bolts) bolding on the back of the intakemanifold.
2. Cleaned Throttle body.
3. No error codes.

Idle was fine for awhile. I turned off the car and started again, let the car run while i was cleaning up some stuff. While I started the car and planned to go to home depot.. i realized.. when i press the gas pedal a little and hold it steady, it sounds like "woo...woo..wooo..woo..wooo" very constant. and the rpm needles just jumps up and down between 1000-1500 .. like there is a ryhthm. Pls help...

 

anybody? pls help..

 

You check your FICV (fast idle control valve)?

 

nope not yet. but will give it a try .
thanks.. pls more suggestion will be nice

 

probably fast idle valve, also you could have air bubbles in your coolant. check the FIV first though

 

Alright, I will check the fast idle control valve thing. Sorry for being stupid but how can i check it? Just see if it's dirty?

 

the FICV is like a thermostat kinda, alteast that`s the way I think of it...Theres like a brass nipple in the center and it`s spring loaded, then a white ring around it that has groves in it, if that ring is loose, it won`t work right. Try to tighten it(clockwise) and see what happens.

 

I had the same problem, its your TPS sensor, did you messed around with it. Swap TPS sensors, but when you do you'll need a voltage meter to time the correct voltage to your specification. If you tried that then try another map sensor, but guaranteed its your TPS sensor

 

also the idle adjuster on the throttle cable

 

Thanks all of u for useful answers

I will check on the TPS sensor. I have never messed with any sensors before. Maybe it ran out or something. Need more info.. where is TPS sensor located. and what does TPS stand for?

thanks again

sorry

 

replace your IACV