cruise control problem 1987f150
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cruise control problem 1987f150
i have a 1987 f150 with a 4.9 and 4 speed manual. the cruise doesn't work but the horn does. i went to this site (dalidesign.com/hbook/ccmain.html) and followed their instructions.
the brake switch seems to work ok. i get 12 volts on depressing the petal. the test on the servo caused the engine to speed up ok when i went through section "servo functional test".
the vss tested through the 6 wire connector going into the amplifier did not show voltage when i ran it through a voltmeter while drving. however, the antilock brakes also use the vss output and the antilock light on the dash indicates that the rear antilock brakes are ok.
i checked the switches on the steering wheel with an ohm meter and they seem to be ok. the fuses also seem ok.
i suspect the clockspring although i am not really sure and getting no voltage on the vss concerns me somewhat. how much trouble is it to change the clockspring and how can i know if this is the problem unless i so change it. the ford dealer says that new ones are not available now and i will have to get one from the junkyard.
thanks
sfhol
the brake switch seems to work ok. i get 12 volts on depressing the petal. the test on the servo caused the engine to speed up ok when i went through section "servo functional test".
the vss tested through the 6 wire connector going into the amplifier did not show voltage when i ran it through a voltmeter while drving. however, the antilock brakes also use the vss output and the antilock light on the dash indicates that the rear antilock brakes are ok.
i checked the switches on the steering wheel with an ohm meter and they seem to be ok. the fuses also seem ok.
i suspect the clockspring although i am not really sure and getting no voltage on the vss concerns me somewhat. how much trouble is it to change the clockspring and how can i know if this is the problem unless i so change it. the ford dealer says that new ones are not available now and i will have to get one from the junkyard.
thanks
sfhol
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Uglyknob
1987 - 1996 F150 & Larger F-Series Trucks
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Jul 11, 2014 12:48 PM
