Rough idle and low oil pressure at start-up.
After 15 mins of running all signs of any problems are gone. Replaced in the last 2 months all 4 o2 sensors(ac delco), Fuel pump-warranty -(airtex), battery, starter, coolant temp sensor-(ac delco). In last 12-18 months MAF-12/09-(delphi), water-pump, power steering pump, Alternator, belts, hoses, tensioners, transmission. I have read different threads about intake gaskets and cat converters, but I don't have rough or sluggish running when the vehicle warms up. These problems only occurr when cold. I have read some about the oil pressure switch causing some issues, and after replacing two fuel pumps in two years, I'm considering replacing that switch. I have two mechanics that are good on heavy truck and 4x4, and they have not been able to fix specific issue. I have done regular maintenance and don't want to just throw parts at this problem, but I'm at a loss at this point.
have the same problem?
Friday, January 21st, 2011 AT 5:40 PM