Subject	Intermittant miss, lean idle, rich under boost
Posted by	Red Hawk (CO) on May 21, 2020 at 3:27 PM
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Message	I have a weird one that just started. Cold start up, the car idles perfect for roughly 30 seconds, then it suddenly runs super lean (17-19afr) and starts this light, random miss. It will do this routine consistently and at the same time interval as if something switches over in the ecu. As the car warms up it will immediately begin the miss and lean idle regardless of time from turning the key. Under boost it will run rich (10-11afr). I just tested for vacuum leaks and found none. it almost appears to be a metering issue? Could it be a bad maf or Selin translator? I have version 1. Thanks!
Follow Ups	Intermittant miss, lean idle, rich under boost - Red Hawk (CO) 15:27:54 05/21/20 Can you check the ECU Water Temp Sensor - Cjw3 21:48:34 05/21/20 Sensor is good. Many things have been replaced on this car. - Red Hawk (CO) 08:08:34 05/22/20 New does not imply functional to the ECU - Cjw3 10:51:36 05/22/20 Fair enough, I'll get NIStune booted back up here shortly. (n/m) - Red Hawk (CO) 15:13:12 05/22/20
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