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Posted

Does anybody know why hot air blows out from the dash of a 1991 LS 400 even though the heater is not on, if so can you let me know how to fix it.

NOTE: I have been told that I might need to reset the AC breakers (done and still blows hot air). Your help is appreciated.

Thanks.

ToyMig

  • 4 months later...
Posted
Does anybody know why hot air blows out from the dash of a 1991 LS 400 even though the heater is not on, if so can you let me know how to fix it.

NOTE: I have been told that I might need to reset the AC breakers (done and still blows hot air). Your help is appreciated.

Thanks.

ToyMig

I have the same issue. driving 5hrs in 40degree C heat on the way back from getting the car was a killer with no A/C either.

....well not really a killer more just ball soup.....

Posted

It's because of the vent option.

The fan may be "OFF" but there is still some air coming through the vent.

Switch it to "Recirculate" and the air should stop alltogether! :D

  • 1 month later...
Posted

when i first got my car it did this but it was winter so i didn't mind. when the summer came #@$%! but a spark plug/wire change fixed the issue.

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