89 ford ranger 2.9 engine runs ruff and severe mis with some back firing. onlyseems to happen after engine heats up

Asked by Apr 03, 2014 at 02:27 PM

Question type: Maintenance & Repair

1 Answer

42,375

I would first try the old basic tune up and go from there. New plugs, wires, cap, rotor, air filter, fuel filter, check for vacuum leaks, clean the throttle body. You could also have a MAF problem. Check out this link: ww.therangerstation.com/tech_library/CleanMAF.html

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