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Heater Blower Motor Speed

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Heater Blower Motor Speed

Posted: 11/1/09 10:09amMessage 11 of 13
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Duncanville, TX - USA
Joined: 11/8/2003
Posts: 22715
Vette(s): #1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas
Non-A/C will NOT have the high speed relay, but it will have the resistor. The resistor on your car should be on the inside of the car, mounted to the air box/plenum under the dash. Problem is, it MAY be on the side towards the firewall... I'm not remembering...
If you take a look under the dash, on the passenger side, the heater plenum is there. The resistor will either be staring you right in the face, or it will be on the opposite side, next to the firewall, which makes it really hard to get to. It will look similar to the resistor that Crossfire1982 posted, just in a different place.

Joel Adams
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Heater Blower Motor Speed

Posted: 11/19/09 3:35pmMessage 12 of 13
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Bloomfield Hills, MI - USA
Joined: 6/29/2008
Posts: 199
Vette(s): 1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt
Ok, put in a new Blower motor and a fan switch. I have high speed and the low below it, but no slow speed. Changing out the resistor will be the next step, hopefully it will not be too hard to get to. The car has no AC, so the resistor is on the heater core and is assessed from the inside. That will be Saturday's job.
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Heater Blower Motor Speed

Posted: 11/19/09 4:54pmMessage 13 of 13
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Oak Creek, WI - USA
Joined: 5/21/2008
Posts: 2041
Vette(s): 1981 Great White Shark. Red Interior, 350/190 hp. PS, PB (SS), A/C CC, T-Tops. Served three years in Active Duty Army, then Retired Air Force after 34 years! Badger State Vettes Car Club. 175,000 Original miles!! Now own a 1998 C-5!
Yup, thats the way the resistor looks on my car.  Cept I do not have all the shinny stuff on my hoses.  I'm a "stock" kinda guy.
Dan
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