91 rear defogger problem.
Thread Starter
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
91 rear defogger problem.
The rear defogger on my 91 Vette times out after only 4 minutes.
The other day it was working just fine. Both side mirrors heat up and all fuses and the grid continuity are good. I also, checked all four connections on the struts and they are fine.
Could a bad relay be causing the defog light to go out? Thanks
The other day it was working just fine. Both side mirrors heat up and all fuses and the grid continuity are good. I also, checked all four connections on the struts and they are fine.
Could a bad relay be causing the defog light to go out? Thanks
Last edited by GKK; Jan 24, 2012 at 02:53 PM.
Thread Starter
Safety Car
Joined: Jan 2004
Posts: 3,783
Likes: 15
From: Northern California
Update:
The rear defogger is working again!
All I did was clean the two bottom strut connectors nearest to the cab with a small wire brush. Now, the rear defogger stays on for exactly 10 minutes and clears the rear window completely.
Also, I found on a 91 Vette, the rear defroster Relay is located under the passenger side knee panel mounted to the dash frame. There are 5 identical relays mounted next to each other and it's the one on the end nearest to the center console.
The rear defogger is working again!
All I did was clean the two bottom strut connectors nearest to the cab with a small wire brush. Now, the rear defogger stays on for exactly 10 minutes and clears the rear window completely.
Also, I found on a 91 Vette, the rear defroster Relay is located under the passenger side knee panel mounted to the dash frame. There are 5 identical relays mounted next to each other and it's the one on the end nearest to the center console.
Last edited by GKK; Jan 25, 2012 at 03:13 AM.
