when i 1st start my car if i dont tap the gas after the car is running it will rev up and then drop and keep doing it till i hit the gas would anyone know what the problem is? i have tryed to search but it didnt get me any place. thanks for the help

 

During the initial cold start warmup, the AWS & BAC hold the idle at 3K for 15-17 seconds.
After that the fast idle cam on the TB should hold the idle speed to around 1500.
If there is a high setting or a vac leak that pushes idle speed above 2K the ECU will give a fuel cut to lower the revs.
If the leak or setting is still allowing revs > 2K the process repeats.

The most common cause is a vac leak.
Another cause is the idle air bleed setting is too high.
Also the fast idle cam & thermo-wax pull-off could be stuck or out of adjustment.

 

^^^^^^ Good advice!

 

How do you go about adjusting those.

 

I am not sure you can adjust the Wax pellet. But, if you take it off, drop it in a boiling pot of water, you will notice the plunger contract. If it does not, it is broken.

It could also be clogged. Mine, had build-up on the gaskett that allowed the warm water to flow into the wax pellet, therefore not allowing it to pull back on the idle. Once the engine completely warmed up, the engine heat would pull back the pellet. Not desirable.

Good luck,
Chris

 

just get rid of the idle cam! accel warmup by doing the TB mod as found on FC3spro.com

 

Everyone missed it

His description is a classic example of a bad or mis-adjusted TPS.

 

wats going on with these idle problems i have the same junky problem

 

age.......... The cars are getting old!