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02-03-2015, 10:25 PM
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#1 |
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Registered User
Join Date: Nov 2010
Location: Rustville USA or southeast Ia
Posts: 654
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1990 gmc 4.3 running cold
My truck has been running cold lately like the temp gauge doesn't move or barley moves no matter how long it runs. I have heat but it's not the best. I have checked the coolant and tried to bleed any air out of the cooling system. I also changed a thermostat a month at ago so I don't really think it's stuck open. Any ideas what's going on here. Could I have to separate issues? Partially clogged heater core and a bad temp gauge? How could I check the gauge to make sure it's working right? Thaks
__________________
Rust is better than rice. 
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02-03-2015, 11:05 PM
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#2 |
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Registered User
Join Date: Apr 2013
Location: GUNTERSVILLE
Posts: 621
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Re: 1990 gmc 4.3 running cold
Infrared thermometer at the thermostat housing.
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02-04-2015, 02:30 AM
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#3 |
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Registered User
Join Date: Jan 2002
Location: Springville, UT, USA
Posts: 1,010
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Re: 1990 gmc 4.3 running cold
try a hot pepper in the fuel tank
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