cantgo2fast
10+ Year Contributor
- 188
- 0
- Jul 2, 2009
-
Fort Collins,
Colorado
Hey guys I need some help figuring out why my car wont idle. A couple days ago I had the thing idling smooth but at about 1200-1300rpm. I have delta 274's so Im only shooting for idle to be about 1000-1100. At that point I figured I had a vacuum leak of some kind because the AFR was perfect but idle was too high and I was adding some fuel via mafcomp and the deadtime. more air (from leak) + more fuel = higher idle
Went to do the old brake clean vacuum leak testing on the throttle body and IM and I couldn't get the thing to stay on long enough. From the logs it looks like the ECU randomly drops the timing like 10* and it kills the engine. Ive played with the fuel and it seems like it doesn't matter what AFR I try and run at idle anywhere from 13.5-17 as soon as the ecu pulls timing I have to give it some gas to keep it going.
Thoughts? If it were the vacuum leak wouldn't the AFR spike as it tried to die?
Base timing was set via http://www.dsmtuners.com/forums/articles-engine-fuel/312350-how-set-base-timing-without-using-lower-timing-cover.html wasn't totally warmed up but it should damn close.'
HELP
Log is attached
Went to do the old brake clean vacuum leak testing on the throttle body and IM and I couldn't get the thing to stay on long enough. From the logs it looks like the ECU randomly drops the timing like 10* and it kills the engine. Ive played with the fuel and it seems like it doesn't matter what AFR I try and run at idle anywhere from 13.5-17 as soon as the ecu pulls timing I have to give it some gas to keep it going.
Thoughts? If it were the vacuum leak wouldn't the AFR spike as it tried to die?
Base timing was set via http://www.dsmtuners.com/forums/articles-engine-fuel/312350-how-set-base-timing-without-using-lower-timing-cover.html wasn't totally warmed up but it should damn close.'
HELP
Log is attached
