Heater Not Working
Not sure whats going on. Its a 91 and the air blow out fine but the truck really doesnt heat up. My fan runs all the time and the air coming out is cold. Any ideas?
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Re: Heater Not Working
Most likely a clogged heater core, especially if the heater stopped working slowly, a little at a time.
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Re: Heater Not Working
Does your temperature gauge operate normally?
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Re: Heater Not Working
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Re: Heater Not Working
It could be a heater core, but it could be the thermostat. I haven't checked the link posted by dj, but it's probably a good place to start. Some simple things to check under the hood, checking hoses to see if the run warm, hot or cold. Keep your safety in mind if the engine is running or warmed up. Changing the thermostat in older Rangers is easier than more modern vehicles. Replacing mine meant located one blind bolt and the other one, heavily obscured by the AC tubing lines.
Good luck on the trouble shoot. Kevin |
Re: Heater Not Working
Well changed the thermostat. The truck still will not heat up, water pump was change not to long ago. Could the gauge be wrong? Also the prvious owner put stop leak in the radiator so somthing might be stuck in there
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Re: Heater Not Working
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Re: Heater Not Working
Hoses do not get hot. Also The water pump was replaced last year because it was rotted out
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What engine is this again? |
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Re: Heater Not Working
Should be the 4 port valve about 2 feet down the heater core lines. Plastic piece with a plastic vacuum line connected. Should see a vacuum actuator on it that pulls a rod that opens and closes the valves. You should be able to manually push the rod in and out.
Check for hot lines that lead up to this. |
Re: Heater Not Working
Any pictures of this
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Re: Heater Not Working
Ok we flushed the system and the heat is coming out. Going to do it again, temp gauge still isnt working though
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Re: Heater Not Working
My temp gauge doesn't rise at all in cool weather.
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Re: Heater Not Working
Mine really doesnt work at all in any weather lol
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