temp gauge - The 1947 - Present Chevrolet & GMC Truck Message Board Network

scooby3242 · 05-06-2005, 02:21 PM

Newbie here!!! I have found alot of post about the temp gauge, but haven't seen this problem. My 71 c10 had after market gauges when I bought it and changed it back to the original gauges...Well all the gauges work except the temp gauge...when you turn on the ignition it pegs hot...my sending unit and engine harness are new...so i thought it was the resistor on the back of the guage. I had another one that was on the back of another fuel gauge I had... same results..pegged hot... so I had a brain fart and noticed that the nuts that I put on the temp gauge to hold down the resistor were different(looks like zinc plated nuts) so I took the nuts that were on the fuel gauge and put them on the temp gauge and the gauge did not peg hot anymore. My question now is does the nuts make that big of a deal? and the temp gauge only goes up about a quarter of the way....I have a 350 motor with a 180 thermosat.....How high should the temp gauge go with a 180 thermostat? thx for the replies.........................

Lemield · 05-06-2005, 02:28 PM

Hi Scooby3242,

Welcome to the board from Colorado

I don't know the answer about the nuts but I'd assume the problem was a ground condition....and not related to the nuts...I dunno.

Both of my trucks read about 1/4 on the temp gauge....to me it seems normal.

jhow66 · 05-06-2005, 03:10 PM

Check your wiring to panel with this:

05-06-2005, 02:21 PM	#1
scooby3242 Registered User Join Date: Apr 2005 Location: Bedford, Tx Posts: 40	temp gauge Newbie here!!! I have found alot of post about the temp gauge, but haven't seen this problem. My 71 c10 had after market gauges when I bought it and changed it back to the original gauges...Well all the gauges work except the temp gauge...when you turn on the ignition it pegs hot...my sending unit and engine harness are new...so i thought it was the resistor on the back of the guage. I had another one that was on the back of another fuel gauge I had... same results..pegged hot... so I had a brain fart and noticed that the nuts that I put on the temp gauge to hold down the resistor were different(looks like zinc plated nuts) so I took the nuts that were on the fuel gauge and put them on the temp gauge and the gauge did not peg hot anymore. My question now is does the nuts make that big of a deal? and the temp gauge only goes up about a quarter of the way....I have a 350 motor with a 180 thermosat.....How high should the temp gauge go with a 180 thermostat? thx for the replies......................... __________________ 1973 gmc swb

05-06-2005, 02:28 PM	#2
Lemield Registered User Join Date: Dec 2004 Location: Arvada Colorado Posts: 1,321	Hi Scooby3242, Welcome to the board from Colorado I don't know the answer about the nuts but I'd assume the problem was a ground condition....and not related to the nuts...I dunno. Both of my trucks read about 1/4 on the temp gauge....to me it seems normal. __________________ Larry 1949 Willys CJ2A, Kubota Turbo Diesel engine, Warn Overdrive, 11 inch brakes, 12volt, Warn M8000 Winch "Little Green" 1970 Rustoleum Roller Red C20 Custom Camper 454 TH400 "Big Red" 1971 K20 6.2 Turbo Diesel 4x4 4spd Ranger Overdrive "Pumpkin Wagon" 2005 VW Beetle Diesel 44+ MPG "Silver Bullet"

05-06-2005, 03:10 PM	#3
jhow66 Registered User Join Date: Jun 2002 Location: Knoxville Tenn. Posts: 3,058	Check your wiring to panel with this: Attached Images __________________ 56 Chevy Bel-Air 2dr. HT (purchased new) 71 Chevy Cheyenne SWB PU (502HO) 65 GMC short bed step--work in progress and my gofer



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