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11-10-2012, 09:52 AM
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#1 |
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Registered User
Join Date: Mar 2000
Location: Clute, TX.
Posts: 1,935
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Blower motor
On my 87' the fan does not blow on HIGH. Blows on low, and mediums, but stops when switched to HIGH
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2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe |
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11-11-2012, 08:40 AM
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#2 |
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Registered User
Join Date: Mar 2000
Location: Clute, TX.
Posts: 1,935
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Re: Blower motor
NOBODY ?????
Posted via Mobile Device
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2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe |
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11-11-2012, 11:24 AM
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#3 |
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Registered User
Join Date: Feb 2010
Location: Fort Worth, TX
Posts: 727
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Re: Blower motor
I had this same problem, turned out to be the black ground wire under the hood from the blower motor to the firewall.
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11-11-2012, 12:30 PM
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#4 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: Blower motor
Low speeds go through the resistor. It's fine.
High speed goes through the relay. Replace it. I replaced mine about a month ago. $7 If the fuse blows after installing it, you'll have to open the relay. Later models have a resistor built in. I had to cut the resistor out so it would not blow fuses. It's November and I'm still driving around with the A/C at full blast!! |
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11-11-2012, 12:33 PM
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#5 | |
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Registered User
Join Date: Mar 2012
Location: San Antonio, Tx
Posts: 784
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Re: Blower motor
Quote:
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San Antonio, TEXAS -Frog -I'm a valet and well I've driven BMWs, Mercedes, Porsche,Bentlys, fiats, Hondas, etc and well even do I like a few features, I love my shortbed, it dosent bore me out, just press on the gas and you'll remember why you love it. |
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11-11-2012, 11:56 PM
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#6 |
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Registered User
Join Date: Mar 2000
Location: Clute, TX.
Posts: 1,935
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Re: Blower motor
Right, and I'm a bit farther south than y'all
Posted via Mobile Device
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2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe |
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11-12-2012, 04:30 AM
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#7 | |
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Registered User
Join Date: Sep 2012
Location: TX
Posts: 1,014
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Re: Blower motor
Quote:
Also my blower motor doesn't move a whole lot of air even on max. I'm going to do that mod where you replace the blower motor with one out of a 94 pickup. They move a lot more air supposedly. |
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11-12-2012, 07:23 AM
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#8 |
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Registered User
Join Date: Mar 2000
Location: Clute, TX.
Posts: 1,935
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Re: Blower motor
Mine is also does not blow much out of the vents but I think mine has something to do with that flap. I can feel the air out of the floor vets even then the selector is on MAX AC
Posted via Mobile Device
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2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe |
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11-12-2012, 08:30 AM
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#9 |
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BAD BOW-Silverado XST
Join Date: May 2000
Location: Senior Member from Austin, TX
Posts: 6,431
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Re: Blower motor
The A/C relay is behind the accumulator. In this pic, it's right above the low pressure switch. http://good-times.webshots.com/photo...54440533aYRkDg
It's painted black. The new one will be shiny "aluminum". Check the wiring. Since full voltage goes through it on max air, wires have a tendancy to burn up. Corrosion is also a problem. Next a fan cuts off, wiggle the wires at the relay. If it comes on and off, the wiring is bad. A stock fan, with all the vents properly open by vaccuum, will blow a lot of air in the cab. I can hear air going to the vents in my truck. |
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11-12-2012, 08:19 PM
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#10 | |
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just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: Blower motor
I have seen the switch be the problem with this too.
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