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Car Forum / Dodge / Dodge Trucks / February 2005cummins engine "miss"
Today, driving at a steady highway speed (99 dodge pickup), I experienced a problem with my Cummins diesel engine which if it had of been a gas engine I would have called it a high speed "miss" . The truck seemed to loose a bit of power when going up a slight incline. The problem seemed to disappear but again, on an incline, the "miss" was somewhat evident. I will take the truck in to the dealer as soon as possible. I did open the water collection valve and the problem is still there. About 60,000 miles on the engine now. Any ideas? > and the problem is still there. About 60,000 miles on the engine now. Any > ideas? Could be a lift pump just beginning to fail.... very common (unfortunately) on those engines. If it's a good shop, they'll do a pressure/flow check on the lift pump. If it's a mediocre shop, they'll hand the keys back saying they couldn't replicate the problem. Fuel pressure gauges should be mandatory additions to any 24V engine. It doesn't take very long for a failing $150 lift pump to trash a $2,000+ injection pump. I agree with Tom. Lift pump is probably producing insufficient flow, which will result in an injection pump soon enough. A pressure gauge should come standard on the dash next to the fuel level. Brent > Today, driving at a steady highway speed (99 dodge pickup), I > experienced a problem with my Cummins diesel engine which if it had [quoted text clipped - 4 lines] > as possible. I did open the water collection valve and the problem > is still there. About 60,000 miles on the engine now. Any ideas? The crankshaft position sensor may be bad. >> Today, driving at a steady highway speed (99 dodge pickup), I >> experienced a problem with my Cummins diesel engine which if it had [quoted text clipped - 6 lines] > > The crankshaft position sensor may be bad. interesting thought, as the crankshaft positioning sensor was replaced a couple of months ago. The warning then was a "check engine " light. The fact that the "miss" is not consistent concerns me that they will not be able to determine the exact problem. I will respond once I get the truck fixed. Thanks to all who offered ideas It was the lift pump (expensive little devil!) >>> Today, driving at a steady highway speed (99 dodge pickup), I >>> experienced a problem with my Cummins diesel engine which if it had [quoted text clipped - 12 lines] > be able to determine the exact problem. I will respond once I get the > truck fixed. Thanks to all who offered ideas > It was the lift pump (expensive little devil!) Are they still around $140.00?? At 60,000 miles you are ahead of the game. It would probably a good idea to get a fuel pressure gauge Roy Well this is Canada eh! Was quoted $600 to remove and replace with part included, so did not know what was actual part price. When I picked up the truck was surprised with the fact my warrantee covered the job with $100 deductible. So cannot tell you the part price after all. >> It was the lift pump (expensive little devil!) >> > Are they still around $140.00?? At 60,000 miles you are ahead of the game. > It would probably a good idea to get a fuel pressure gauge > > Roy Your injection pump may not be too far behind. Hopefully it will fail while still under warranty. > Well this is Canada eh! Was quoted $600 to remove and replace with part > included, so did not know what was actual part price. When I picked up the > truck was surprised with the fact my warrantee covered the job with $100 > deductible. So cannot tell you the part price after all. |
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