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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: Aug 2010 Posts: 109 Shop Shark | | Shop Shark Joined: Aug 2010 Posts: 109 | Is there any way to test a temp gauge? Our 65 has gauges but the temp never moves. It has a new sender and I ordered one for a 65 with V-8 since we put in a 350. I think the old original gauge is bad.
'65 C-10, 65 L-60, 65 C-80, 72 C-60 & and a bunch of old Chevy cars.
Never time to do it right, always time to do it over.
| | | | | Joined: Nov 2002 Posts: 1,002 Shop Shark | | Shop Shark Joined: Nov 2002 Posts: 1,002 | I did a quick search. The temp gauge is a voltmeter, it's reading the rise in voltage as the temp sender resistance goes down. I didn't see the resistance for a 60s truck, but the later trucks use about 1400 cold and 50 hot. You should have voltage at both sides if the gauge, and at the sender. If you momentarily short the sender wire you should see the gauge spike.
Larry
I don't own a vehicle that isn't old enough to drink.
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