idle RPM's vary

Asked by HNB1967 Sep 17, 2015 at 06:22 PM about the 2002 Ford Ranger 4dr XLT Appearance Super Cab SB

Question type: Maintenance & Repair

At idle the RPM's vary from around 700 to 1500/2000...and the engine will die occasionally. I recently replaced coil, plugs, fuel filter and a couple of vacuum lines. Before I replaced those it would idle rough and the check engine light was on...codes were for lean condition on both banks (V6 engine).

3 Answers
65,510

firebird338 answered 9 years ago

Clean throttle body and clean or replace (IAC) Idle Air Control valve or Mass Air Flow Sensor depending on which one your vehicle has.

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70,925

Kelly answered 9 years ago

yes.... also dirty fuel injector... add a bottle of ZMAX fuel treatment to a half tank of gas...

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