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 Where is the blower motor resistor?
#779871
01/13/07 09:11 PM
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Anonymous
Unregistered
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I've got a 1990 Trooper the fan is fine just runs on one speed. I've searched just can't find the resistor.
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Re: Where is the blower motor resistor?
#779872
01/13/07 11:10 PM
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Joined: Aug 2002
Posts: 3,007
Roll Me Over
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It's probably screwed into the air ducting under the dash near the evaporator area. I haven't had a chance to look myself, but that's where it was on my 89 Pickup. Richard <img src="/forums/images/graemlins/patriot.gif" alt="" />
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Re: Where is the blower motor resistor?
[Re: Richard Saylor]
#779873
01/13/07 11:51 PM
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Anonymous
Unregistered
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Thanks, found it on the drivers side. I got to thinking, usually when a resistor goes out don't you have dead spots in fan switch? Mine runs in low no matter what position you set it on. Should I be looking for something else?
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Re: Where is the blower motor resistor?
#779874
01/13/07 11:57 PM
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Joined: Aug 2002
Posts: 3,007
Roll Me Over
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Not necessarily. In my pickup, I lost the 2 lowest speeds. Others have lost everything but high. High should remain because that's direct 12V and doesn't go through the resistor. Richard <img src="/forums/images/graemlins/patriot.gif" alt="" />
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Re: Where is the blower motor resistor?
[Re: Richard Saylor]
#779875
01/14/07 12:20 AM
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Anonymous
Unregistered
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I would definatly say that high is not the speed its running at.
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Re: Where is the blower motor resistor?
#779876
01/14/07 01:31 AM
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Joined: Aug 2002
Posts: 3,007
Roll Me Over
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To me, it still sounds like the resistor is probably the problem. Richard <img src="/forums/images/graemlins/patriot.gif" alt="" />
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Re: Where is the blower motor resistor?
#779877
01/14/07 06:00 AM
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Joined: Sep 2002
Posts: 326
Mudrunner
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Thanks, found it on the drivers side. I got to thinking, usually when a resistor goes out don't you have dead spots in fan switch? Mine runs in low no matter what position you set it on. Should I be looking for something else? It's not one resistor... the resistor pack contains 3 resistors connected in series with taps for each fan speed. High speed bypasses all three resistor which is why the fan only runs in that speed when one fails. In your case it sounds like the actual switch may be bad since you say the fan runs at the same speed regardless of switch position.
Steve
'97 Rodeo 5spd. 3.2L SOHC V6 4WD
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Re: Where is the blower motor resistor?
[Re: Canucklehead]
#779878
01/15/07 05:32 AM
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Anonymous
Unregistered
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Bypassed the resistors today. It still run through the switch but now it operates on high. Ought to get me through ice now.
Thanks
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Re: Where is the blower motor resistor?
#779879
01/16/07 03:09 AM
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Anonymous
Unregistered
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Whoa, I have more fan than I ever did. It was blowing the 10amp fuse pretty quick so I switched to a 15 seems to be holding. Nice to actually have some airflow.
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Re: Where is the blower motor resistor?
#779880
01/16/07 05:49 AM
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Joined: Apr 2000
Posts: 7,268
Isuzu Moderator
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It was blowing the 10amp fuse pretty quick so I switched to a 15 seems to be holding.I would suggest carrying a fire extinguisher with you. Preferably within arms reach, like maybe buckled into the passenger seat. <img src="/forums/images/graemlins/smile.gif" alt="" /> It really is not the best idea to swap in a higher amperage fuse. You run the risk of smoking the wiring. Good Luck, Michael
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