Black03

I am done installing my Plenum and 75mm TB, Now the idle is wierd.. It doesnt revv down as smoothley and it likes to stick at 1500 rpms and eventually drop to 900 rpm(before it was about 600).. Its annoying in traffic because as soon as you put it in first to move up and stop again its stays at 1500 and wont drop and I feel like an idiot when I stop and my angine is going VRRRRRRRRRRR. Is there some adjustment to be made?? Or is that how its gonna mostly be?

MikeHawke

Only a programmer or custom tune can really adjust your idle, but your's shouldn't be doing that.

Try unhooking the battery for a half hour and then driving it again. If that doesn't reset the computer and fix it, you probably have something unhooked or it's air leaking somewhere.

Dan04COBRA

You should go buy a new TPS.

It's easier and less of a hassle as you're seeing now, that it's easier to just buy a new TPS than to try transfering it over.

Black03

You think the TPS is making all this happen? Aslo when I start the car the rpms shoot up to about 2500.. WTF??

Black03

Also my rpms drop really slow.

2000GT4.6

What brand did you go with? 5 bucks says it is a MAC.

There is a control that may need to be adjusted. It is on the T/B, a small screw that sets the T/B at idle.

Sounds like you didn't get something set correctly on the TPS, or perhaps the car is holding the throttle slightly open at idle. Try adjusting the screw.

I had no problems what so ever with my t/b and plenum when I installed em.

David_K

unplug your battery for 2 hours. this ussually fixed all my problems with all my cars. i think it resets the computer im not sure on stangs but on german cars it would reset and they would relearn everything and adjust to the new modifications

Black03

I thought it was a bad idea to mess with that screw?

Black03

Also will the sticky pedal feel go away??

The02GT

Well i see no one has said anything about the iac??? Try to clean that along with reseting the ecu and let us know...