2007 Impala 305 code but can't find problem
April 12th, 2017, 2:35 PM
#21
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April 13th, 2017, 7:19 AM
#22
has the crankshaft position sensor been changed and an crankshaft variation relearn not been done. this can set false misfire dtc...usually random po300.
April 13th, 2017, 8:26 AM
#23
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tech2,
On the misfiring subject,
If you have certain cylinder misfiring in idle and also random misfiring in part (low) throttle then does that say anything about the cause?
On the misfiring subject,
If you have certain cylinder misfiring in idle and also random misfiring in part (low) throttle then does that say anything about the cause?
April 14th, 2017, 5:53 PM
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April 14th, 2017, 7:29 PM
#25
not sure...
If you have a good scan tool you can monitor the misfire counters live. gm has the best misfire counters i have seen. So although the dtc shows a random misfire at times it not definite that something changed...the scan tool can show you whats going on live....to see if the accumulators count for another cylinder or stay on the same cylinder.