2008 Dodge Grand Caravan has rough idle surges and lunges

Asked by May 09, 2018 at 10:19 AM about the 2008 Dodge Grand Caravan SXT FWD

Question type: Maintenance & Repair

2008 Dodge Grand Caravan has rough idle it surges
and lunges. I have replaced plugs, plug wires, coil
pack, and now the EGR valve. It has showed a
cylinder 6 miss fire so I did plugs wires and coil. No
luck then it showed P0404 EGR. just replaced it and
still the same.

2 Answers

20

A scanner can tell you that you have a nad egr valve but that doesnt nessasarily mean its bad. Find out why its bad. You could have a faulty sensor somewhere else making your egr read bad

I had the same problem and neither myself or the dealers mechanics could find the problem, until a hole was burned in the head of the number 6 cylinder. it turned out to be the injector wiring harness connector plug was located at the factory on a bracket that placed it within 2 inched of the rear the cylinders exhaust manifold (non-shielded area) and the insulation had become brittle and flaked off allowing the injector wires to touch and make the injectors feed extra fuel into the number 6 cylinder. It cost me $5000.for a new motor. No computer will find this problem!! It is impossible to find if you don't know what you are looking for. I've been a mechanic for over 40 years.

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