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Yesterday, 08:12 AM
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#1 |
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Registered User
Join Date: Mar 2000
Location: Clute, TX.
Posts: 1,935
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Temp guage rising
About 3 months ago I replaced waterpump, fan clutch, thermostat, hoses. Wednesday this started. The temp goes up to the tick between 210 - 260. It climbs to this but does not literally overheat. I open the hood, the fluid is correct and the motor area does not feel abnormally hot. If I leave it sit for a short time and start again. It will be at 210 mark and then rises again.
Im thinking Temp sensor. Any other ideas... oil is fine, fluid is new and fine... I work in the chemical plants and use my truck. I need my truck dependab
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2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe |
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Yesterday, 09:10 AM
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#2 |
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Senior Member
 
Join Date: Dec 2006
Location: Studio City, Calif.
Posts: 2,883
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Re: Temp guage rising
I don't now squat about newer trucks but I would check the ground on the temp sensor, specifically if it was installed with teflon tape or some other sealant that would interfere with the ground conductivity. If not, put the sensor in boiling water and read the ohms across the terminals. There should be specs for a normal sender online someplace. -BA
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'69 GMC C2500 Custom Camper, 8 1/2' bed, New GM 350, NP 435 Close Ratio 4spd. Trans., 3.73 Dana-60 open.Camper and Trailer wiring, PS, PB, AC, tach , three gas tanks, stereo speakers, 2nd owner, Work-Truck supreme. |
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Today, 08:14 AM
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#3 |
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Registered User
Join Date: Mar 2000
Location: Clute, TX.
Posts: 1,935
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Re: Temp guage rising
Stuck thermostat.
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2004 Silverado Crewcab 1972 Chevy Monte Carlo 2017 Chevy Tahoe |
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Today, 03:20 PM
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#4 |
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Moderator
 
Join Date: Oct 2008
Location: Wentworth, NH
Posts: 4,969
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Re: Temp guage rising
Do a sanity check with an infrared thermometer pointed at the thermal sensor in the head and the water pump and then check the radiator where the water is going into it.
If the thermometer matches the gauge then check what the difference is between the water pump and where the top hose goes into the radiator. This should tell you if the thermostat is sticking slightly.
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1959 M35A2 LDT465-1D SOLD 1967 Dodge W200 B383, NP420/NP201 SOLD 1969 Dodge Polara 500 B383, A833 SOLD 1972 Ford F250 FE390, NP435/NP205 SOLD 1976 Chevy K20, 6.5L, NV4500/NP208 SOLD 1986 M1008 CUCV SOLD 2000 GMC C2500, TD6.5L, NV4500 2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263 2009 Impala SS LS4 V8 RTFM... GM Parts Books, GM Schematics, GM service manuals, and GM training materials...
And please let us know if and how your repairs were successful. |
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