AC Fan not working
Thread Starter
Heel & Toe
Joined: Mar 2009
Posts: 15
Likes: 0
AC Fan not working
My 82 corvette was in storage for about a year and a half and and the AC/Heater fan seems to have quit working. I pulled the switch and checked it with an Ohm meter and the switch appears to be working. On the back of the switch, one of the lines has a strong vacuum present. If someone can point me in the right direction to diagnose this problem I would greatly appreciate it.
Second issue, during this same time, my wipers quit working. I've checked all of my fuses and they checked out good.
Thanks in advance,
Second issue, during this same time, my wipers quit working. I've checked all of my fuses and they checked out good.
Thanks in advance,
Thread Starter
Heel & Toe
Joined: Mar 2009
Posts: 15
Likes: 0
Ok, I pulled most of the pieces/covers on the dash but did not find where to check to see if I am getting power directly to the AC fan motor. Can anyone please point me in a direction regarding where i can find access to the motor or the hot powere wires going directly to it?
Thank you so much for any suggestions / help,
John
Thank you so much for any suggestions / help,
John
Instructor
Joined: Sep 2006
Posts: 133
Likes: 0
From: Orlando Fla
that goes bad. That is exactly what happened to my 82.
Thread Starter
Heel & Toe
Joined: Mar 2009
Posts: 15
Likes: 0
Thanks for the response, what should I do to check it?
Thank you both soooo much for the help. This has been a bit of a puzzle for me.
To help diagnose... The fan never works regardless of any settings on the AC control panel. I do have good vaccuum going into the control. Would this mean it isn't the relay that leaves causes it to blow high all the time or should I still check it somehow.
How do I check these two before purchasing the part?
Again, I can't thank you both enough for the help!
John
To help diagnose... The fan never works regardless of any settings on the AC control panel. I do have good vaccuum going into the control. Would this mean it isn't the relay that leaves causes it to blow high all the time or should I still check it somehow.
How do I check these two before purchasing the part?
Again, I can't thank you both enough for the help!
John
Thread Starter
Heel & Toe
Joined: Mar 2009
Posts: 15
Likes: 0
still not working, please help
I found the resistor and it looked almost like new when I pulled it out. Doesn't appear to be bad. The wires are hot going to it with only one changing when the switch is moved from low to high.
I've checked all of the fuses and they are good. there is another plug above it that has all of the wires hot as well. It is a small rectangle with the plug going into it from the bottom. It is screwed to a plastic housing right above the resistor. Is that the relay? How can I check to see if I am getting power directly to the blower motor?
Thanks again for any help you can provide. Not sure where else to look?
Thanks for any suggestions you might have.
I've checked all of the fuses and they are good. there is another plug above it that has all of the wires hot as well. It is a small rectangle with the plug going into it from the bottom. It is screwed to a plastic housing right above the resistor. Is that the relay? How can I check to see if I am getting power directly to the blower motor?
Thanks again for any help you can provide. Not sure where else to look?
Thanks for any suggestions you might have.
Thread Starter
Heel & Toe
Joined: Mar 2009
Posts: 15
Likes: 0
It is a ground wire, anyone know where it ends?
I found the problem for both my wiper and AC fan. It appears to be a bad ground wire. The wire is a single line female end that plugs into the bottom of the windshield wiper motor. I traced it as much as possible but lose it when it routes back around to the fuse block in the engine compartment of the firewall. Does anyone know where this wire terminates? Is it a ground or is it the delay power for the wiper? when I ground it both the wipers and AC fan work. I ran a jumper temporarily but would prefer to fix the real issue instead of putting a band aid on it.
Thanks for all the help,
John
Thanks for all the help,
John
Drifting
Joined: Jul 2007
Posts: 1,889
Likes: 23
From: Kansas
Yes Sir; that ground wire goes to the bell housing, it is also the ground to the radio, There is another one on the metal below the driver door, but that is to another bunch of things,, I would clean all the grounds an reinstall same. The one to the battery is on the frame, and you have some more on the tail light system. Lots of luck Doctorgene
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Thread Starter
Heel & Toe
Joined: Mar 2009
Posts: 15
Likes: 0
Thanks!
Thanks a million Doctorgene! I will see if I can track it down this weekend. That's a huge help! Is it the ground for the AC fan as well or is it just completing a ground somewhere else that made it start working?
Thanks again,
John
Thanks again,
John
Drifting
Joined: Jul 2007
Posts: 1,889
Likes: 23
From: Kansas
Hey guy, The corvette is grounded at several different places. Battery to frame is the main one, than there several other points that you have to find to clean. But at each pcs. like the heater control, the radio and the alarm system along with the heater motor have a connection that should be cleaned as well as the lead at the bellhousing, for that group. ea. group has a different place that needs to be cleaned. along with the fuse panel. Try and find a used Corvette Shop Manual they have all the points or Helm 1-800-782-4356 they are the original guys that printed the manual up for G. M. Sorry that I can't be of more help. Isn't the Forum great? have a great one. Doctorgene
Drifting
Joined: Jul 2007
Posts: 1,889
Likes: 23
From: Kansas
Sorry I should tell you, All the black wires are grounds. follow them everywhere they touch the frame or body shell clean and replace, check that they work and coat with clear paint that way they will stay a long time.. Doctorgene
