Engine running rough now a knocking
I did a search and could find an answer. My 90 runs a little rough, seems to have power ok. I unplugged the MAF and such to see if it went away and it didn't. It did set off my check engine light which had the code p0102 but I think that was because I was unplugging things. Since then I have developed knocking during acceleration, not at idle. The rough running seems worse at exactly 1600rmp. I cleaned the PVC and air filter. The spark plugs are fairly new. Going to try wires next. I cleared the code and it hasn't come back.
Things I'm going to try,
Change oil to 5w 30 syn
Change Fuel Filter
Change spark plugs and wires
I want to remove and clean the stepper motor but not sure where it is on my 4.0. Anyone have a picture?
Anything else I should be looking to check? I'm not getting any codes.
Thanks as always