WEIRD idle issue after FAST 92 install
Thread Starter
TECH Enthusiast
Joined: Jan 2010
Posts: 695
Likes: 0
From: Corpus Christi, TX
WEIRD idle issue after FAST 92 install OK here is my problem. I swapped my LS6 for a new ported FAST 92 swapped everything over and put it on and turned the car on and it idles at 800 and doesnt flucuate at all it just sits there. took it out for a test drive and it seems its more RPM speed than MPH speed. like its all sound and no go. I used everything that came with the fast. Button head bolts and their bolts to install the intake. everything is hooked up right and i checked for leaks by spraying carb cleaner around the intake and nothing no change. im STUMPED on what it could be. its not like its a high idle where you can tell theres a vacuume leak its just an anooying wtf is wrong with my car problem now 
Help a fellow TECH out guys.
Help a fellow TECH out guys. So the tps reset and stock bellow swap didn't help?
Make sure the throttle cable length adjuster is adjusted only to the point where there's no slack in the cable. I'd also make sure the set screw on the TB is only adjusted enough to to keep the throttle blade from sticking at 0% throttle position.
Make sure the throttle cable length adjuster is adjusted only to the point where there's no slack in the cable. I'd also make sure the set screw on the TB is only adjusted enough to to keep the throttle blade from sticking at 0% throttle position.
Last edited by 99Bluz28; Jan 28, 2013 at 02:00 PM.
First, ensure the TB cable's nipple so to speak is in the lowest hole of the TB (true for NW TB's anyways)
The throttle cable adjustment is right in the middle of the hard plastic line that the TB cable runs in. It looks like 2 sections of the plastic sleeve joined together. You really cant miss it. It's hard to explain here, but easy to adjust. You either push the 2 halves together, or hold a small detent and pull them farther apart.
Remove the bellow and watch the TB blade. Have someone get in the car and go WOT with the gas pedal. I'm willing to bet your TB blade isn't opening 100%.
The throttle cable adjustment is right in the middle of the hard plastic line that the TB cable runs in. It looks like 2 sections of the plastic sleeve joined together. You really cant miss it. It's hard to explain here, but easy to adjust. You either push the 2 halves together, or hold a small detent and pull them farther apart.
Remove the bellow and watch the TB blade. Have someone get in the car and go WOT with the gas pedal. I'm willing to bet your TB blade isn't opening 100%.
Thread Starter
TECH Enthusiast
Joined: Jan 2010
Posts: 695
Likes: 0
From: Corpus Christi, TX
Ya that adjustment is pretty weird lmao hard to describe but easy to do. It still needs to be tuned the shifts are off n I'm pretty sure the shop will fix anything wrong
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo First, ensure the TB cable's nipple so to speak is in the lowest hole of the TB (true for NW TB's anyways)
The throttle cable adjustment is right in the middle of the hard plastic line that the TB cable runs in. It looks like 2 sections of the plastic sleeve joined together. You really cant miss it. It's hard to explain here, but easy to adjust. You either push the 2 halves together, or hold a small detent and pull them farther apart.
Remove the bellow and watch the TB blade. Have someone get in the car and go WOT with the gas pedal. I'm willing to bet your TB blade isn't opening 100%.
The throttle cable adjustment is right in the middle of the hard plastic line that the TB cable runs in. It looks like 2 sections of the plastic sleeve joined together. You really cant miss it. It's hard to explain here, but easy to adjust. You either push the 2 halves together, or hold a small detent and pull them farther apart.
Remove the bellow and watch the TB blade. Have someone get in the car and go WOT with the gas pedal. I'm willing to bet your TB blade isn't opening 100%.
I just double checked mine to make sure but mine is in the first slot/hole in the TB cam, on my 99 with cruise an tcs, it wont work in the lower position.
