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Idle Problems!

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ECLIPSE10358

10+ Year Contributor
42
0
Mar 5, 2012
Keyser, West Virginia
1g NA just finished a turbo swap and car will no idle. i can keep the car running with the throttle and it does not seem sluggish when i rev it up. It also does not kick the check engine light on. I replaced and adjusted the biss screw the proper way with no luck. I have tried swaping throttle bodies, swapping maf sensor. If i unplug the maf the car will idle and it throws the check engine light on. Please throw some ideas at me.
 
you might have a boost leak somewhere check all of your lines maybe a ground conection I was having the same problem when I first turn my car on from a build had some ground wires loose and some vacum houses loose have in mind I deleted the egr and fiav and after doble checking everything now it idles way better and I am running a n/t TB
 
the car idled fine when i got it, i installed a turbo maf, turbo ecu, 450cc injectors and resistor pack, and now it wont idle. i checked for boost leaks and its ok. the only think i wired up was the knock sensor, resistor pack, and a wire for the maf and the connections are all good. could it possibly be the ecu?
 
Well my friend it seems like you need to get that fixed, or find one that works is your car a manual, i got a few goodies for free when picked up my 92 tsi recently.
 
yeah its a manual, i dont know anyone around here that has a running 1g i could swap my ecu into, and i dont wanna throw out the money for a new one unless i know for sure its bad.

Fuel pressure is at about 38-39 with vacuum line connected. when i unplug the maf the car idles. as soon as i plug it in the car dies. someones gotta have a idea
 
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