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Old 07-07-2013, 08:15 PM   #1
ricknelson88
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05 blower fan and resister question

I'm having an issue with my blower working on all speeds for roughly 30 seconds and then it slowly peters out. If you wait a little bit it will start again and then do the same. I have replaced the blower and the resister.


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Old 07-08-2013, 04:08 AM   #2
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Did you check the wiring plug where it plugs into the resistor pack? They have been known to burn-up with the resistor pack. I would also check the one that plugs into the blower motor and switch.
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Old 07-09-2013, 07:39 AM   #3
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Yes I looked at it and it seems to look good. Tonight I think ill run a ground to the blower case. But I am sure up for any suggestions. Thanks.
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Old 07-09-2013, 05:07 PM   #4
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IIRC the fan is feed hot thru a fuse/relay and picks up the negative/ground is feed thru the switch and resistor pack.
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Old 07-12-2013, 09:45 PM   #5
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I'm having the EXACT same problem. So far I just changed the resister so i guess i'll look elsewhere before changing the blower motor. If it was the fuse it would not work intermittently? there is a red plastic in the resister connector with NO discoloration??? I did smell a burning smell while trying to keep the fan going by continuing to turn fan on and off. I just don't get why it works for a minute or two and then slows to not blowing??? HELP
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Old 07-13-2013, 08:56 AM   #6
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First step for YOUR issue from the description would be to remove the blower motor, clean out any debris, check that it spins freely, then power it up with jumper leads from a battery & see how it runs by itself.

Without testing, it's all guessing, and that can cost $ without solving anything.

Luck!
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Old 07-14-2013, 02:24 PM   #7
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Quote:
Originally Posted by RICK1TIMER View Post
I'm having the EXACT same problem. So far I just changed the resister so i guess i'll look elsewhere before changing the blower motor. If it was the fuse it would not work intermittently? there is a red plastic in the resister connector with NO discoloration??? I did smell a burning smell while trying to keep the fan going by continuing to turn fan on and off. I just don't get why it works for a minute or two and then slows to not blowing??? HELP
OK fixed mine... ended up being the blower motor. Here are the final steps i took.

1. Unplugged the connecter from the blower motor.
2. Turned ignition to run and and tested the current at connecter in all five fan speeds. 4=12.3, 3-1 were all less than the previous (as it should be coming through the resister.)
Because the fan was working in all fan positions and then stopping, I was concerned it was some thing other then the motor. So...
3. Plugged the motor back up and tested the blower as it went through its it's symptomatic run then fail after a minute or two. There was no change in current as the motor died.
4. Removed the blower motor and connected directly to the batter with some test leads. (Removing all other components in the circuit.) The motor failed after running for a few minutes just as it had while in the circuit. BAD MOTOR.

Bought a new one problem solved! The motor running and then cutting off had me second guessing myself and I didn't want to buy parts I didn't need.

Thanks All... the site had some great input.
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