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Old 11-13-2010, 10:41 PM   #1
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Default replaced blower resistor

ok i replaced my blower resistor after it went out 2 yrs ago.. the fan has been run direct for thoes two years. i fixed it it didnt work... found out the fuse blew i replaced the fuse and it worked!!!

then while driving later that night fan began to kick off and back on and then nothing.

checked the fuse blown again replaced the fuse worked fine then did it again this time fuse didnt blow... pulled fuse n put back it began working again

it did it once more and i unplugged fan motor and plugged it back in without touching the fuse and it began to work.

why am i having issues with my heating system??????


every year i replace fan 2-3 times. the dual climate unit has been replaced 2 times total and the blower resistor 5 times total.

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Old 11-13-2010, 10:49 PM   #2
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Start checking over the wires. Sounds like a odd grounding problem.
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Old 11-13-2010, 10:50 PM   #3
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nothing arcs this has been going on since car was new back then it waas all waranty
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Old 11-13-2010, 10:51 PM   #4
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dealerships never figured it out either they just kept replacing everything cus it all kept going bad which is what it still does to this day
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Old 11-13-2010, 10:52 PM   #5
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I would still trace all the wires. A bad ground or connection at a plug could be going in and out.
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Old 11-13-2010, 11:09 PM   #6
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hmmm i replied but I guess I forgot to hit the button.. Im with Dan on this you have a short somewhere, Or a relay ??
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Old 11-16-2010, 02:59 PM   #7
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yea may be
but i have no clue where tho ive been all thru the wiring down there havent found anything.

get this its never blown a fuse tho... and i have a 20a fuse instead of 30a. i was hopeing it blow fuse before it fried the blower resistor again.

either the resistor is going bad or the com link frm the dash unit to comp to blower resistor is shorting somewhere i cannot find it

without that com signal the comp wont turn on the relays
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Old 11-18-2010, 02:02 PM   #8
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Quote:
Originally Posted by 1989_IROC-Z View Post
yea may be
but i have no clue where tho ive been all thru the wiring down there havent found anything.

get this its never blown a fuse tho... and i have a 20a fuse instead of 30a. i was hopeing it blow fuse before it fried the blower resistor again.

either the resistor is going bad or the com link frm the dash unit to comp to blower resistor is shorting somewhere i cannot find it

without that com signal the comp wont turn on the relays
Try tapping the bottom of the heater box with the toe of your shoe when it doesn't go on. There have been problems with the blower motors. My 03 had a sticking brush that didn't make contact. Vibration would make it slip in its channel and touch again or the rotor moved enough to touch it.

Have you checked the contacts on the blower motor connector for burned, heated contacts?
Have you checked at the resistor connector for burned contacts?
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