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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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| | | | Joined: Sep 2008 Posts: 87 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2008 Posts: 87 | is there anyway to test a temp gauge? | | | | | Joined: Feb 2002 Posts: 12,029 Cruising in the Passing Lane | | Cruising in the Passing Lane Joined: Feb 2002 Posts: 12,029 | run the truck and use the wifes candy or meat thermometer in the rad to compare - or if the truck isn't running, dunk the sender in boiling water and watch the gauge, use the thermometer to compare gauge reading to water temp as it cools
Bill | | | | | Joined: Jun 2006 Posts: 687 Shop Shark | | Shop Shark Joined: Jun 2006 Posts: 687 | Yes, at the dealer I work for we have a device that checks the guage using veriable resistence. You hook up the device to ground and to the wire at the sending unit and turn the knob. This causes a resistence that changes as you turn the knob.
When the knob is at its lowest setting the guage reads cold, middle setting reads normal, and highest setting reads hot.
So with that in mind ground the wire st the sending unit (with the key on) and see if the guage moves to hot.
Ya know I wrote all this and it occured to me that you may have a mechanical guage. If so, boil a cup of water in the microwave drop in a thermomature when the temp gets down to 190 drop the sending unit bulb into the water and watch the guage.
I didn't do it, no one saw me do it, you can't prove anything! "Bart Simpson"
| | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | I'll bet his '52 Stovey does have a mechanical temp gauge....with no vibrator either.   Stuart | | | | | Joined: Sep 2008 Posts: 87 Wrench Fetcher | | Wrench Fetcher Joined: Sep 2008 Posts: 87 | anybody know why in a pot of boiling water my gauge didn't move at all? is the spring that expands shot? | | | | | Joined: Jul 2004 Posts: 5,708 'Bolter | | 'Bolter Joined: Jul 2004 Posts: 5,708 | That spring is actually a Bourdon tube which is part of a sealed system that makes the needle move. If it has sprung a leak it's not going to work until it's professionally rebuilt or replaced with a new gauge and tube (one piece). That's how I see the situation.
Stuart | | | | | Joined: Jun 2006 Posts: 687 Shop Shark | | Shop Shark Joined: Jun 2006 Posts: 687 | LOL Stuart, Ain't a going there.
I didn't do it, no one saw me do it, you can't prove anything! "Bart Simpson"
| | | | | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 | Rusty, I sent you a pm....hope it helps. | | |
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