high varying idle
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high varying idle
i have a 92 f150 5.0l and one day i drove it and it would idle really high and it varies in sped abit up and down, when i drive down the street its like i'm using cruise control when i'm not because of how high my rpms are. do i have a bad sensor or something? -thanks in advance
Senior User
Joined: Oct 2010
Posts: 150
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From: Charleston SC
Let me dig in to that and see what Mr. Haynes has to say about that...
With the key on, engine not running, back probe the ground and signal wires with a multimeter. With the throttle closed, voltage should be .5-1.0 VDC, manually open the throttle fully, check voltage again, should be 4.0-5.0 VDC. The voltage should start changing as soon as you start moving the throttle.
With the key on, engine not running, back probe the ground and signal wires with a multimeter. With the throttle closed, voltage should be .5-1.0 VDC, manually open the throttle fully, check voltage again, should be 4.0-5.0 VDC. The voltage should start changing as soon as you start moving the throttle.
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kingswood202
1987 - 1996 F150 & Larger F-Series Trucks
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Feb 27, 2017 11:06 AM
