Thanks - I have one on order from Majestic.

And if the VooDoo Doctor does not work we have a 'ol time tent revival coming through in a couple weeks - they should have a healer in the group I would bet.

 

if his voodoo tricks work, let me know

 

Those two small holes in the Throttle body lead to a passage inside the intake manifold, its a completely seperate part of the manifold. This passage supplies enough air to modulate the idle via the IAC valve on the side of the manifold, when you take the IAC valve off and look at the manifold this is the open passage I'm talking about, mine had to be heavily welded when I bored out my manifold for the new TB. A couple weeks ago I performed the hole plugging procedure described in the manifold, but came to find I had a vacuum leak inside my throttle body via one of the throttle plate screws backing out of the rotor for the butterfly. I'm gonna try the test again and cross my fingers its just my IAC. Good luck fellas. E

 

^ Thanks for explaining. lol gotta get me a manual.

 

Thats my point - the idle air comes from the 2 holes (and what slips past the closed throttle plate), why would the IAC valve be bad if it dies.

I think some air may also come from the EVAP system, but I have not been able to confirm this. So by closing these 2 holes you are removing the air supply going to the IAC - so regardless if it is working or stuck open, the engine will die.

Now I am thinking my IAC may be sticking open at low throttle input allowing crank case gases and EVAP gases to enter the intake stream mucking up the fuel mixture and resulting fuel trim.

 

Lucas Octane Booster has cleared this up for me...struggled for over a year with this problem

 

Did not work for me - although it did notice my fuel prices have increased

 

How strange! Why the hell did this work for me? For the first time in as long as I can remember I can feather the throttle in 1st gear at very low speeds and the car will not buck like a bronco. I wish I could help more.

I would consider taking a good look at the throttle body for foreign particulate. Also, don't forget to change your PCV valve. These has been known to cause strange things like this and hunting idles and stuff.

GL!

 

I fixed my vacuum leak and plugged the hole in my throttle body and my car died, I bought a IAC and will be installing it today, I will post if it fixes the problem.

 

Just to be sure I asked my buddy with his 02 to do the same procedure again. (Plugging the holes). His car does NOT have the problem we are describing. His car did NOT die. He said that it revved down a little but remained running. So there has got to be a reason.