1991 ford f150 wont start when fuse that goes to the heater is in but if u pull that fuse out it fires right up. When the fuse is in it cranks once then everything dies lights on dash, head lamp ect.

Asked by Mar 07, 2014 at 02:13 PM about the 1991 Ford F-150

Question type: Maintenance & Repair

So whats going on I wanted to get an idea
before I put it in the shop

1 Answer

35

Sounds like the blower is bad. Try to disconnect blower first with the fuse in, 2 doesn't work short at fuse or the fuse box. TEST battery and alternator . check one of these should help you.

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