The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Upgraded my alternator and now my temp gauge is reading way hot

Newguy71 · 03-30-2017, 08:37 PM

It doesn't feel over heated but I really don't have the experience to make that call. I'll check the voltages next chance but last time I did it was 13.5 but that was with a weak/bad battery. How can I tell if it's running hot or not other than the gauge? When I feel the thermostat housing its hot but it feels like its in the 190 range... I'm thinking I should check the temp gauge resistor on the dash panel and see if it is still what it should be. I checked the gauge panel a couple months back and fixed any issues I saw. (I'm an electrical engineer Mon-Friday and I'm confident it's in good shape now). Separate from all this, what should the gauge read? What temp is in the middle and what temp is at the hot mark? Also, what thermostat do you guys run? I thought it should be 195... thanks for the reply!

03-30-2017, 08:37 PM	#5
Newguy71 Registered User Join Date: Jan 2017 Location: RUSSELLVILLE, Ar Posts: 21	Re: Upgraded my alternator and now my temp gauge is reading way hot It doesn't feel over heated but I really don't have the experience to make that call. I'll check the voltages next chance but last time I did it was 13.5 but that was with a weak/bad battery. How can I tell if it's running hot or not other than the gauge? When I feel the thermostat housing its hot but it feels like its in the 190 range... I'm thinking I should check the temp gauge resistor on the dash panel and see if it is still what it should be. I checked the gauge panel a couple months back and fixed any issues I saw. (I'm an electrical engineer Mon-Friday and I'm confident it's in good shape now). Separate from all this, what should the gauge read? What temp is in the middle and what temp is at the hot mark? Also, what thermostat do you guys run? I thought it should be 195... thanks for the reply!