what would make 2002 dodge ram 1500 not rev over 2rpm

Asked by Apr 25, 2013 at 10:17 PM about the 2002 Dodge Ram 1500 SLT Quad Cab LB 4WD

Question type: Maintenance & Repair

I had cylinder 6 and 8 miss fire I changed oil and filter and cap and rotor and wires and plugs.. but now truck will not rev over 2rpm will not go over 25 mph  don't kno what else to do.. some one told me it was cadilac converter other said fuel pump

3 Answers

77,735

Could be right on both counts, I would have the exhaust system backpressure tested first, the reason is that you stated that you had a misfire on 6 and 8 it could have dumped enough raw fuel to overheat the catalysts and cause a melt down internally so your engine cannot get rid of exhaust efficiently. Exhaust pressure should run around 4 to 5 LBS.

25,335

Right on tennisshoe couldnt agree more. So glad to see quality answers. Judge roy would have said egr egr egr or clean your battery cables hes a broken record.

40

could also be the crankshaft position sensor. I had the same problem and I replace it and it worked just fine after

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