65 temp gage
Thread Starter
Burning Brakes
Joined: Jan 2007
Posts: 960
Likes: 25
From: Middlesboro KY
65 temp gage
Not working properly. Has never seemed to get much past 130 degrees even though laser measured 160-180. Disconnected lead to sending unit and grounded it. Needle maxed out. Changed thermostat and sending unit that I purchased from Echler's. Sending unit 44707. Thermostat 45272 (robertshaw). Not cheap but what the heck. Anyway, took car for 20 minute run. Outside temperature was around 40 degrees. Temp gage at end of run registered 100 degrees and laser read 150 degrees. Did not use teflon when installing sending unit. What do you think the problem might be?
Race Director
Joined: Nov 2003
Posts: 10,696
Likes: 3,090
From: Cottonwood AZ
C1 of Year Finalist (performance mods) 2019
Not working properly. Has never seemed to get much past 130 degrees even though laser measured 160-180. Disconnected lead to sending unit and grounded it. Needle maxed out. Changed thermostat and sending unit that I purchased from Echler's. Sending unit 44707. Thermostat 45272 (robertshaw). Not cheap but what the heck. Anyway, took car for 20 minute run. Outside temperature was around 40 degrees. Temp gage at end of run registered 100 degrees and laser read 150 degrees. Did not use teflon when installing sending unit. What do you think the problem might be?
Thread Starter
Burning Brakes
Joined: Jan 2007
Posts: 960
Likes: 25
From: Middlesboro KY
Race Director
Joined: Nov 2003
Posts: 10,696
Likes: 3,090
From: Cottonwood AZ
C1 of Year Finalist (performance mods) 2019
Thread Starter
Burning Brakes
Joined: Jan 2007
Posts: 960
Likes: 25
From: Middlesboro KY
Melting Slicks
Joined: May 2001
Posts: 2,749
Likes: 776
From: Dadeville AL
You can test the sending unit with a multimeter and a bowl of hot water. If the sending unit is producing the correct resistance, you know its either in the gauge or the wiring to it. You could bypass the existing wiring with a long jumper cable from the sender to the gauge to see if that solved the problem.
Last edited by kellsdad; Feb 4, 2021 at 06:04 PM.
