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Old 11-14-2012, 01:06 PM
hypermax hypermax is offline
Dodge Ram Forum Newcomer
Join Date: Nov 2012
Location: nanaimo
Posts: 1
Gender: Male
Vehicle: 1990 dodge ram
Engine: 1989-1993 360ci (5.9L) Cummins diesel I6 160hp 400lb/ft
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Default heater motor fail 90 cummings

one day my blower motor stoped working on my 90 dodge cummins so i tested the blower motor, low-high switch, all the fuses under the steering column changed the resistor. and still no fan on any setting. i checked the plug for power at the blower motor in the engine bay and theirs now power goin to it.
and theirs no power goin to the resistor plug and i checked the plugs on the dash buttons for defrost and vent all that theirs no power goin to those plugs aswell, thats with the key on. the only relay i cand find on this truck is under the steering column its a [COLOR=blue !important][COLOR=blue ! important]3 [COLOR=blue ! important]prong[/COLOR][/COLOR][/COLOR] one and when i pull it out theirs power goin to the relay, i also pluged the raly back in and tested with the tester light from under neath and the horn goes off when you touch the one wire so i dont think this relay sends power so the blower motor or the dash buttons

if anyone can give me any direction with this it would be deepy apreachiated
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