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Old 04-16-2005, 10:45 AM
Jim H Jim H is online now
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Join Date: Aug 2000
Location: Holland, MI
Posts: 1,316
Quote:
Originally Posted by Carl_NH
...Also what does OVP stand for and where is this relay located? Carl
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.

Quote:
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
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
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