idle problems
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Teching In
Joined: Dec 2005
Posts: 3
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idle problems hey guys. i recently changed my throttle body (to bbk) and figured i'd do the egr mod while i was at it. but now when the car is cold, the idle is fine at start up but as soon as i drive and come to a complete stop the idle drops dramatically. any ideas on whats goin on here? 
1999 trans am ws6
-granatelli maf
-bbk 80mm throttle body
-whisper lid
-eibach sportlines
-bilstein shocks
1999 trans am ws6
-granatelli maf
-bbk 80mm throttle body
-whisper lid
-eibach sportlines
-bilstein shocks
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Before you get a full blow tune. Try the idle adjustment procedure. Do you have Autotap or some other scanning software?
https://ls1tech.com/forums/pcm-diagnostics-tuning/177230-stop-drilling-those-tbs-fix-stalling-without-computer-tuning.html
This is a very useful thread. Just noticed you have a Granitelli MAF as well. The larger TB and MAF may be causing problems for the PCM. If that procedure doesn't work out for you, you just might need tuning to fix your idle.
https://ls1tech.com/forums/pcm-diagnostics-tuning/177230-stop-drilling-those-tbs-fix-stalling-without-computer-tuning.html
This is a very useful thread. Just noticed you have a Granitelli MAF as well. The larger TB and MAF may be causing problems for the PCM. If that procedure doesn't work out for you, you just might need tuning to fix your idle.
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