Question about 1991 Ford F150

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How many turns in should the throttle screw be on a 1991 f150 with a 351 windsor

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I believe that most automatics like 600 RPMs in drive.As far as how many turns that is,you can use the median settings of one to one and one half after the screw makes contact with it's stop.If you don't have a tachometer to set the RPMs use the turn to turn and a half initial setting and readjust while the engine is running in park.You don't want it to lurch into gear because of too high a setting so take it easy.Lots of RPMs won't let you stop on ice,the engine will power right thru the brakes.So find a tachometer and set the curb idle speed according to the specification sticker on your shock tower or radiator support.

Posted on Feb 08, 2010

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