Idle problems

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Dec 15, 2011 | 01:46 PM

Fordtruckman7988

Thread Starter

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Joined: Dec 2011

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Idle problems

I have a 1992 F250 4x4 with the 5.8l. I just bought it recently to drive to work. I replaced the tps and the idle sensor that is on the side of the throttle body looks new. It idles very high rpm, when you put it in gear it jumps in gear real hard (due to rpm). Is there any suggestions out there other than vacuum leaks? Thanks

Dec 16, 2011 | 08:14 AM

rla2005

Fleet Owner

Joined: Oct 2005

Posts: 20,789

Likes: 1,753

From: Kentucky

Does it still idle high with the IAC (the solenoid on the side of the throttle body) unplugged? If it does you are still looking at a vacuum problem or someone before you has jacked with the Idle stop screw.

Dec 16, 2011 | 12:07 PM

fonefiddy

Cargo Master

Joined: Nov 2003

Posts: 2,585

Likes: 1

From: Duluth, Mn.

Check the vacuum reservoir. They are notorious for corrosion, leading to a major vacuum leak. Remove nuts from the underside of the pass fender liner.