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Razorback

A/C and blower quit

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My 87 Bronco A/C and blower have been working fine in this hot Alabama summer. Couple days ago about 90 degree day, both shut off after about 5 minutes driving. The fuse no. 9 was not blown but it was 15 amp so I replaced it with the correct 30 amp. Still not working either A/C or Blower. I wired the blower direct to the battery as a test and it worked fine. Any help greatly appreciated.

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Yo,
Here is your 87 HVAC wiring diagram, http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=25047BASE

Also Suspect Grounds G701 &106 that serves both blower & A/C clutch field coil, cycling switch, etc.
See location depiction @

5904945_orig.jpg

In 86 EVTM http://www.garysgaragemahal.com/ac--heater.html
Gary describes how to troubleshoot.

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