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Posted on Dec 04, 2009

1998 dodge ram pickup 318 eng. engine idle rough on warm-up engine idle rough after warm-up shutting off engine and starting back up engine also runs sluggish in over drive at a low idle. I have replaced , plug wires,coil,plugs,distributor cap,rotor,o2sensor, engine runs well over 1500 rpms.

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  • Posted on Dec 04, 2009
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Joined: Dec 04, 2009
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If the engine seems to run fine over 1450 RPM maybe there is a vacuum hose leaking or EGR valve is slightly stuck open. Any help from the OBD II trouble codes? Or is there simply no MIL and no stored information in the OBD II computer read at the local parts store through the connector by the drivers knee?

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