Join Date: Apr 2007
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mine did something like this....I opened it up and there was an orange wire that had broken off at the circuit board. re-soldered it and it works like a charm now. i also took a hot glue gun and covered all the wires so they would have a strain relief. if your going to do this, once you get it open just wiggle each wire and make sure they are still connected to the circuit board. you also may want to do a continuity test for each pin in the harness back to the circuit board and make sure there is not a break in the cable. hope this helps.
I'm not a Diesel Mechanic or Expert. All posts are just guesstimations.
4" Turbo Back Exhaust, 2" lift in front,1" Lift In the Rear, EGT Gauge, ARP Studs.