Forum Discussion
bjbear
Oct 09, 2018Explorer
ricelake922 wrote:
.....An hour into the trip, I noticed that the RPM was running at 2800 rpm at 5th shift. Got to a red light and when I went to shift from 4th to 5th, the RPM went to 3500 before shifting. ........ No changes to any of the gauges while the strong increases in RPM. No changes in sound of engine when driving with high RPM.
Based on your comment that there was no changes in sound when driving with the high RPM, before I started thinking it was a transmission problem, I would strongly suspect a tachometer problem. I have trouble imagining a diesel engine at 3500 RPM. It would be noisy....
Hope it is as simple a problem as it first appears to be..........
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