Heater not working
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Heater not working
I have a 1996 Ford Ranger. The other day I noticed my heater was not blowing any air, no matter what speed it was on. I opened my fuse panel, and started to unplug fuses to check them to see if that was the problem. I got to the ignition coil / PCM system fuse, and pulled it out. That fuse was ok, so I plugged that fuse back in, started my truck up, and my heater was working again as normal. However, my heater has stopped working again, and this time i tried to remove and re-seed that fuse but the heater still doesn't work. I have checked the Blower Relay fuse, and that fuse is still good. I got into power distribution box and the 40A fuse for the Blower Motor still looks like it is good. How do you know if it is one of the relays that are bad?
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From the way you describe the problem, it sounds rather like a loose wire and/or connection. Ken00's post is quite helpful and sensible. However, just to play it safe, I would suggest you check the connectors and wires to ensure they are all clean and tight and then follow his post's guidelines.
Lest my idea sounds foolish or unlikely, did your problem arise after you hit a very rough spot in the road? How close is your coil/PCM fuse to the 40-amp blower fuse?
It may be as simple as loose wiring. (Although, admittedly, such is not quite as common as it used to be in some of the older harnesses.)
Good luck!
Lest my idea sounds foolish or unlikely, did your problem arise after you hit a very rough spot in the road? How close is your coil/PCM fuse to the 40-amp blower fuse?
It may be as simple as loose wiring. (Although, admittedly, such is not quite as common as it used to be in some of the older harnesses.)
Good luck!
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The heater didn't quit either time until I had turned off the ignition. I thought about that too, thinking that maybe I might have jarred something loose. I put the fuses to a meter, and they both checked out ok. I checked all of the wiring, and it all looks clean and snug. That's why I'm wondering if it's a bad relay.
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If there are no loose nor corroded wires nor connectors and the fuses check out okay, the next obvious place to check would be the relay. It may be the relay is going bad and doing so intermittently. If the relay is good, the next possible problem would lie within the switch itself.
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Thanks for all your help guys. I found the blower relay, which was behind my front right head light. I pulled the relay out, and one of the pegs was all corroded. It was so corroded, that by the time I got done sanding it down...it was too thin. Went and bought a new realy for $11 and my problem was solved. Wooohooo...
Last edited by mattisjd; Oct 13, 2004 at 07:42 AM.
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