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Originally Posted by Carl_NH
...Also what does OVP stand for and where is this relay located? Carl
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Over Voltage Protection. It should be under the hood, driver side, behind the rubber engine compartment seal. It should have a red top, about 1-inch square.
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Originally Posted by Carl_NH
Psfred and JimH,
So this AM removed two wire plug at back of IP cleaned the contact (tho not coroded) and reconnected. Started - ran slow - stalled actually restarted and then ran at a slow idle. Removed plug at back of IP - no change in idle speed. Seems to point to idle speed sensor on/near flywheel?
Since this is non turbo I cannot locate any idle speed controller/knob etc anywhere in engine compartment. Also what does OVP stand for and where is this relay located? Below/behind the fuse panel in the engine compartment?
Carl
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My speed control is under hood, driver side, rear. There is a round 1-inch knob, with numbers, which is the idle speed control adjustment. However, if there is no change in speed with the two wire plug on or off, I would suspect either the flywheen sensor or the Electronic Diesel System computer.
I don't know enough about non-turbo to be certain, but I would guess that turbo or non-turbo could use the same electronic idle speed control.
Best Regards,
Jim