Topic: High Speed Fan Relay
in Forum: C3 Electrical
Already a Member?
Click Here to Login
Not yet a Member?
Click Here to Register for Free!
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
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
The high speed blower works specifically off the relay, so if there is no high speed, chances are it is relay related, but it could also be due to a blown fuse link that powers the relay. There should be 12v at the relay any time the key is on, on the large red wire. The fan control switch closes the relay(orange wire). The burple wire goes to the blower motor.
If yer lucky, you can remove the can off of the relay, and file the points, and make it work like new again...unless there is something else damaged, such as it being melted.
|UPDATED|8/29/2011 10:27:37 AM (AZT)|/UPDATED|
If yer lucky, you can remove the can off of the relay, and file the points, and make it work like new again...unless there is something else damaged, such as it being melted.
|UPDATED|8/29/2011 10:27:37 AM (AZT)|/UPDATED|
Joel Adams
C3VR Lifetime Member #56 
My Link 
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
SPONSOR AD:: (Our Sponsors help support C3VR)
Mine was melted when replaced!
Barry
Thanks Joel,
|UPDATED|8/30/2011 6:27:31 AM (AZT)|/UPDATED|
It's been working fine and when I got in the car Sunday, no high speed fan. I have not had a chance to look at it since I stored the Vette in a big warehouse, to protect it from Irene. I will take a look this weekend. Is the relay availble at the local parts store?
Scott
|UPDATED|8/30/2011 6:27:31 AM (AZT)|/UPDATED|
Lifetime MemberModerator
Duncanville, TX - USA
Joined: 11/8/2003
Posts: 20214
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
Scott, a real parts house(like NAPA) should have one in stock. Others might also stock them, but it has been many years since that type of relay has been used, so ya never know. Ya might give it a little love tap with a screwdriver and see if it works. If it does, then opening it up and filing the points will prolly get it blowin again for a few more years.
Sometimes, too...the frigging blower switch itself can act up, but I'm sure you worked it over pretty well trying to get it to blow. I know the one on my '74 sometimes needs a little wiggle to make a good contact...
|UPDATED|8/30/2011 10:25:00 AM (AZT)|/UPDATED|
Sometimes, too...the frigging blower switch itself can act up, but I'm sure you worked it over pretty well trying to get it to blow. I know the one on my '74 sometimes needs a little wiggle to make a good contact...
|UPDATED|8/30/2011 10:25:00 AM (AZT)|/UPDATED|
Joel Adams
C3VR Lifetime Member #56
My Link
(click for Texas-sized view!) NCRS
"Money can't buy happiness -- but somehow it's more comforting to cry in a CORVETTE than in a Kia"
in Forum: C3 Electrical
SPONSOR AD: (Our Sponsors help support C3VR)