Davehalldy wrote:Just wondering how to go about replacing pcm. Is it difficult. Still haven't got van sorted out yet. Still gives dtc p0268b when attempting pump learn. Fails pilot learn because of misfire / cylinder imbalance code 83. It is running on all 4 cylinders but can hear it miss and smell fuel. Done another leak off test today and all 4 equal. Had it to a auto electrician he used launch delphi and some other machine could find problem. Had it to another garage yesterday who had it plugged into to a snapon machine couldn't find out the problem.so I'm thinking engine loom but can't find any damage or pcm. Don't know how to check or how to replace. I'm just stuck now on what to try next.
Airthies wrote:I'm still not convinced it's a pcm issue.
I did a set of learns yesterday and interesting to see this information before going through the procedure.
Yes, and I always do.knobby1 wrote:Airthies wrote:I'm still not convinced it's a pcm issue.
I did a set of learns yesterday and interesting to see this information before going through the procedure.
You will get this every time you do the learns....just erase it when everything is complted successfully.
Lord Knobrot
Maybe time to take them out and get them tested by a specialist, incase one of them is sticking or partially blocked, which will not affect the leak off excessively but will the injection and subsequent firing force of the cylinder in question which the pcm will pick up a fail the learns as it doesn't see the results within the range it's expecting.Davehalldy wrote:That's interesting. But still cant get it to do pilot learns. I haven't even been able to use van. Tried learns last week and failed with a error code 83 misfire and cylinder imbalance. Never had that one before. Don't know what cylinder is actually misfiring because it is firing on all 4. Just not getting anywhere.
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