p0300
11-05-2015, 01:40 PM
#1
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Join Date: Apr 2013
Location: Central CA
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p0300 So I finished my build and had my car tuned in May. Due to issues with my transmission I wound up installing a 3200 stall speed circle D converter. Since then I have the misfire counters going crazy at idle. As soon as I put it under a load or accelerate they stop completely. After a moment at idle it starts counter misfires again.
I have read that changing a cam will sometimes cause this but I had no issues until my transmission started to act up and I subsequently changed the Converter.
I appreciate any insight as to what I need to do to fix my latest issue!
Doug
I have read that changing a cam will sometimes cause this but I had no issues until my transmission started to act up and I subsequently changed the Converter.
I appreciate any insight as to what I need to do to fix my latest issue!
Doug
11-06-2015, 12:57 AM
#3
Zero out the misfire tables in tune (or reduce the sensitivity by upping the threshold). You're running your MAF and misfires are read with the MAF enabled. So you have to either disable it or really desensitize. If you had an SD tune, misfires are disabled by the PCM.