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Wont idle when in gear
1991 Ford F-150

Wont idle when in gear

(1991 Ford F-150)
have to keep foot on gas and brake to keep it running. runs ok when driveing. then the engin light comes on.after 20 minutes of driving.
2 answers & 0 comments
Popular Answer
on January 26, 2011
Need to get that Engine Light code, that will help determine why your truck will not idle.

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General Diagnosis
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on January 26, 2011
Need to get that Engine Light code, that will help determine why your truck will not idle.

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of Columbia Auto & Tire on February 06, 2011
Most likely a vacuum leak...listen for a hissing noise near the rear of engine against the firewall.
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