I am working on a truck that is killing me!!! the thing will not rev past 2800 and then drops to 2300 and back to 2800. it will repeat that cycle the pedal to the floor and it does it in neutral or in gear. i have read the codes and it they are clear. any ideas?
I'd also recommend the above suggestions. Not sure how much you know about this rig, but it wouldn't hurt to pull the e-brake pedal bracket (3 nuts) and see if the ECU has an aftermarket chip installed.
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