Mham2k
15+ Year Contributor
- 306
- 57
- Feb 8, 2008
-
Dallas,
Texas
I have an idle problem that I know is mechanical but i need to know where to start.
I'm running ECMLink but I didn't post it in that forum because this is a mechanical issue not a link issue.
Notes
Where could i start troubleshooting?
I'm running ECMLink but I didn't post it in that forum because this is a mechanical issue not a link issue.
Notes
- ISC is New
- BISS screw is adjusted to 30
- o2 Sensor is new, no leaks in housing or turbo manifold
- AFR i mention below is from a wideband o2 located a little after downpipe before CAT.
- AirFlowPerRev is .24
- Fuel Pressure is 43.5
- If I set my idle to 750 my car stays around 17 afr and runs rough
- If I set my idle at 800 - 950 car stays around 15 - 17 afr and runs ok - rough
- In ECMLink it doesn't matter what I set my 50Hz or 100Hz MAF Slider to, the car will bump it up and idle fine for like 30 seconds then drop back to lean.
- Adjusting deadtime does nothing to correct the idle problem
Where could i start troubleshooting?