temp gauge troubleshoot - Page 2 - JeepForum.com
Sign Up   Today's Posts
User: Pass: Remember?
Advertise Here
Jeep Home Jeep Forum Jeep Classifieds Jeep Registry JeepSpace Jeep Reviews Jeep Gallery Jeep Clubs Jeep Groups Jeep Videos Jeep Events Jeep Articles
Go Back JeepForum.com > Models > Jeep CJ Forum > temp gauge troubleshoot

Smittybilt Hard Tops @ Oconee Off-Road! 706-534-9955XHD Heavy-Duty Hood Latches for JK and TJ available at OcoFS: Jeep Fog Light LED Bulbs! Several Brightness Options!

Unread 09-01-2011, 12:39 PM   #16
Registered User
1981 CJ5 
Join Date: Aug 2011
Location: Potter Valley, CA
Posts: 37
They are both the two post type. I can see a little resistor (I think thats what it is at least) on the back of each gauge. I can't find the link to the instructions that I downloaded, but they don't really say much and actually have a diagram of the OEM type gauges on it anyway. These new gauges do have I and S marked however, I just didn't look for that as I was putting them in. The Fuel gauge has two posts, one is S, the other I think is marked I (didn't actually look for marks on this one once it was installed cause it is working). There is a jumper that goes from the I on the fuel to the I on the temp gauge. This is what I had hooked up incorrectly, originally hooked to the S post on the temp gauge. When it was hooked up that way, the temp gauge never did anything, stayed pegged on Cold. Once I got it switched, with a bad temp sender, it pegged hot when turned on. Now that I have a good temp sender in, it still pegs hot when turned on. So now it is unplugged so I don't fry something more than I already have, and gauge is pegged cold, unhooked.
Hope this helps explain. I'll try to take a picture of the back of the speedo when I get home tonight.
Thank you!!!

broncridingirl is offline   Reply With Quote
Unread 09-02-2011, 03:51 AM   #17
John Strenk
John Strenk's Avatar
1976 CJ5 
Join Date: Feb 2005
Location: Shalersville Ohio
Posts: 13,007
OK the two post gauges are different as you know.
There will not be any flashing lights as the resistor is the only regulator in the gauge.
The only way to find out which is wrong is to put some resistors on the gauge and see if the gauge moves properly with the right resistance. Or get an Ohm meter and measure the resistance of the sending unit at the plug that attaches to the gauge, just to make sure there are no shorts in the wire.
John Strenk is offline   Reply With Quote
Unread 09-02-2011, 09:05 AM   #18
Registered User
1978 CJ5 
Join Date: Jun 2005
Location: Albany~town, Oregon, Oregon my home and for 200 billion slugs
Posts: 1,418
Thanks a lot John, I know you're the man when it comes to the gauges
Once I get some time I'll get back into 'er again and post results.
The parts shop that stocks part for Skylab II will not have parts for our year/model of Jeep
We cannot accurately judge the trajectory of a speeding critter (cat, dog, sasquatch)
Record heat waves and floods only occur when we visit that area
turbogus is offline   Reply With Quote
Unread 09-12-2011, 12:45 PM   #19
Registered User
1981 CJ5 
Join Date: Aug 2011
Location: Potter Valley, CA
Posts: 37
finally tested the gauge with resistors, and it pretty much pegs hot with any amount of resistance... so I guess I probably fried it when I had it hooked up wrong. The resistance across the gauge is still right at 26, which is the same as what the fuel gauge is showing (and it works).
broncridingirl is offline   Reply With Quote
Thread Tools

Suggested Threads

Jeep, Wrangler, Cherokee, Grand Cherokee, and other models are copyrighted and trademarked to Jeep/Chrysler Corporation. JeepForum.com is not in any way associated with Jeep or the Chrysler Corp.