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Discussion Starter #1
So I’ve just sorted a lean code, and now it’s gone completely the other way.
Getting a P0172 code and a long term fuel trim of -22%
Very slight rough idle too.
Replaced the maf around 9-10 months ago, checked and is clean, air filter is clean too. Can’t find any leaks around the intake, and no noise indicating a leak.
checked all plugs and all of them are sooted.
Fuel rail pressure is around 3900 kpa at idle
Intake air temp is around 50 degC
When the code is cleared it takes around 60-70 miles to come back on.
No drivability issues.
Any idea of where to check next?
 
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