well, the problem is not running cool but running warm around 185-190f unloaded or loaded. i now my thermo is working some what because the temp does drop once it hits 190f and drops down to 170-180f. after that initial temp drop it's back at 189-190f and stays there until i stop at light, and it will drop to 185f until i start accelerating back up it goes. i'm thinkin a new fan clutch is a must, the one thats currently in the engine is fairly used(337,600miles). i hope it's not a head problem or something worst!!
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1995 dodge 12v cummins turbo diesel 5spd 4x4 with new a engine out of a '96 with 90,000 miles. new fuel system, 5" single stack, 4" high flow down pipe, BD exhaust brake and a flat bed comin spring!!, it's my work truck!