Chrysler Repair Questions? Ask a Mechanic for Answers ASAP
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Replace the oil pressure sending switch. It would also be a good idea to check oil pressure with a mechanical gauge.
Also scan for any codes that could be related to the rough running problem.
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I would try cleaning the IAC valve and throttle body for a low idle.
The problem with these engine is the oil passages are too small and they can easily become blocked, this will also cause the oil light to flicker when warm.
When you replaced the water pump, was it because coolant was in the engine oil?
The problem is that water/coolant washes the bearings in the engine, it does not take long once this happens. This causes excessive clearance which causes lower oil pressure.
10 miles is enough to wipe out the bearings. You need to check oil pressure with a mechanical gauge. Also double check your timing.
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