Question about Ford Thunderbird
Headlights seem to be dim .I put on some running lights myself and they also seem to be to dim.
It sounds like your alternator is about to fail. Have it checked, I suspect that the charge voltage has dripped below 12 volts. A properly functioning alternator should put out about 13.8 volts when in charge mode.
Posted on Feb 17, 2012
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Posted on Jan 02, 2017
SOURCE: 1991 FORD THUNDERBIRD
THIS IS NOT CAUSED BY ANY RELAY, (THERE IS NOT ANY RELAY) IT IS CAUSED BY A BURNT CONNECTOR AND BURNT HEADLIGHT SWITCH, (BOTH AVIL FROM FORD DEALER) REPLACE THE CONNECTOR AND REPLACE THE HEADLIGHT SWITCH, BEEN A FORD DEALER TECH FOR YEAS AND HAVE REPLACED DOZENS OF THESE FOR THIS VERY PROBLEM
Posted on Aug 25, 2009
Well first I suggest that you get a piece of paper an pencil. Draw on the paper the exact position of all your pulley's and then in a different color draw the belt while its on the pulleys mapping out the exact route around each one. Believe me, if you don't and you also don't have the service manual, you will be at it for a while unless you have a very good memory. after that, find the tensioner pully. there should be a 1/2 inch drive opening on the tensioner where you can put a wratchet or a breaker bar. Use a little muscle to move the tensioner away from the belt and when there is enough slack remove the belt with your other hand. Some tensioners have a nut you can tighten to keep it in the "no tension on belt" position. Installation is reverse of removal. I hope this helps. merry christmas
Posted on Dec 18, 2009
have someone listen to your gas tank while turning the key from off to run. if theres no sound, goto the rear passenger side fender cover and remove (inside the van) theres a little red button down in the rear corner. check to make sure its pushed in (inersia switch for fuel cutoff). also check fuses. if you hear the pump check, the fuel filter.
Posted on Jun 21, 2010
Testimonial: "Thank you for the help. The inersia switch was removed by Pep Boys a few years ago. I don't know why? It turns out to be the fuel pump was bad. The way it was determined was by the tow truck driver with a rubber hammer banding on the gas tank. After he hit the tank it jared the fuel pump enough to let it run. We replaced the pump."
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