TPI Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
Sponsored by:
Sponsored by:

I hope this is just it

Thread Tools
 
Search this Thread
 
Old Oct 26, 2007 | 12:01 AM
  #1  
kowboy59's Avatar
Thread Starter
Supreme Member
iTrader: (8)
 
Joined: Dec 2004
Posts: 1,153
Likes: 0
From: kissimmee fl
Car: 88 iroc-z z-28
Engine: 383
Transmission: th400
Axle/Gears: 3.42
I hope this is just it

Okay so my car has had some odd idles. And at soem times it will lack power when i hit the gas because of it. Like it is getting no air to go in. I honestly think it is the IAC valve or the TPS, more so IAC, because sometimes it runs perfect. I have messed with the torx bit on the tb without resetting the idle speed. I think that this is the problem. Now I was going to reset my IAC, but i was confused on the A and B pins. Can some1 give me a picture please?
Reply
Old Oct 29, 2007 | 12:31 PM
  #2  
jamesbob02's Avatar
Supreme Member
 
Joined: Oct 2002
Posts: 1,042
Likes: 0
From: Oklahoma City, OK
Car: 92 Z28
Engine: 357 TPI (L98)
Transmission: 700R4
Re: I hope this is just it

See if you have any vacuum leaks, it's usually the culprit. Track any port that leads from your throttle body or intake manifold, and make sure it ends somewhere contained. Usually you can find a broken line or two if you haven't been under the hood much before.

After that, get a vacuum diagram and make sure those lines are even going where they're supposed to. You'd be surprised what previous owners did with things that they didn't know where it went (took me over a year to diagnose all the problems the previous owner caused my car!)

Come back after you've checked the vacuum stuff and tell us what you've found.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
LC2 TECH
History / Originality
3
Oct 13, 2015 11:53 PM
Fanatic1074
Interior
4
Oct 2, 2015 03:47 PM
sjorgens
Suspension and Chassis
7
Oct 1, 2015 07:54 PM
3.8TransAM
NW Indiana and South Chicago Suburb
2
Oct 1, 2015 07:47 PM
TexasFormula
Body
1
Sep 30, 2015 06:36 PM




All times are GMT -5. The time now is 05:23 AM.