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Old 01-04-2011, 12:59 AM
eye4mud eye4mud is offline
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Join Date: Jan 2011
Age: 37
Posts: 1
Gender: Male
Vehicle: 1999 Dodge Ram 3500
Engine: 1999-2000 359ci (5.9L) Cummins ISB 24-Valve Diesel I6 235hp 460lb/ft (manual)
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Default Engine surging while holding at a constant speed need help!

I have a 19999 Dodge Ram 3500 Dually 5.9l Diesel. The engine is stock no mods, all factory original intake and exhaust with an exhaust brake.

First my cruise control stopped working and now while trying to hold a constant speed I get intermittant surging, the engine will drop in rpm's and and then surge back above where it was before and then return to the speed I was holding it at. Originally only did this at lower speeds, now is becoming more frequent at higher speeds.

Any ideas? I am new to Diesel's so I am lost... EGR Valve? Throttle position sensor bad? Fuel filter clogged?

Any help would be appreciated.
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