New IAC = Regaining lost HP?
Thread Starter
Team Owner
Joined: Feb 2000
Posts: 51,504
Likes: 6
From: Sacramento CA
New IAC = Regaining lost HP?
I got my car back together, with the new IAC in.. Drove it over 40. killed it.. drove it.. Idle is WOAH, NICE! No more "surging" in the engine. All around MUCH more healthy. In fact, it felt a LOT more healthy on the highway, and above 4krpm, does that make any sense? It feels like I picked up a few lost ponies. Or is it all in my head?
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: New IAC = Regaining lost HP? (Smash)
Some is likely positive thinking, but if it was stuck open the extra air would make it a little lean at WOT. Of course if you also adjusted the TPS (if adjustable on your motor) that could account for quicker throttle response.
Pro
Joined: Mar 1999
Posts: 532
Likes: 0
From: Cleveland Ohio
Re: New IAC = Regaining lost HP? (Aaron's 87)
Smash, I assume it's and L98. How tough was it? Did you have to fool/read adjust the throttle position sensor? My 91's surging at idle and slightly at speed. I'm not to well schooled in TPI. Thanks, Frank
Melting Slicks
Joined: May 2001
Posts: 2,161
Likes: 0
From: Tyler TX
Re: New IAC = Regaining lost HP? (Smash)
I'm going to be pulling my TB off tomorrow and trying to clean the IAC before buying a new one. Figure I'll do the TB coolant bypass at the same time. I'm hoping I'll be able to fix my idle problem by cleaning the IAC instead of having to go with a new one. If it doesn't work, at least I'll have done the bypass so it will be less of a hassle to take the TB off again.
