Message: I have a 92 dakota v6 when I am going up a hill or accelerating the fan cuts out and when the rpms go down the fan comes back on. Could it maybe something with the vacum shutting the vents off?Anybody else have the same problem? thanks for the help.
Message: your fan is possibly still going, but defaulting through the defroster, due to a vacumn line off. Check all vac lines, including back of heater switch, when accelerating you rob vac so it defaults through defroster, then when you let up, it goes back through heater duct, (or ac) if on.
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Subject: heater fan
RE: heater fan