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T-Rex's avatar
T-Rex
Explorer
Jan 27, 2021

Check Engine Light...Going on 5 years & 20,000 miles...

After 5 years (and 20,000 miles) of owning my 2007 Class C RV with an E450 chassis, I am finally committed to resolving what should have been addressed right way. The prior owner had taken the RV to ...
Class C
carringb's avatar
carringb
Explorer
Jan 28, 2021
It’s not likely the MAF is the culprit in this case. A dirty MAF will cause a lean condition all the time, to the point it will cause pining, before it ever causes cold-start symptoms.

Vacuum leak is very likely. I even had the PCV valve pop out of the valve cover once, when I let it go about 100k too long and it plugged.

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