08-13-2006, 02:55 PM | #1 |
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Join Date: Mar 2004
Location: Aviano, Italy
Posts: 221
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Bad Temp Sensor??
A recent bout of false overheating from the stock gauge lead me to install an aftermarket temp sensor and gauge which proves all is OK. The stock system was showing hot at the stock gauge. I changed the stock sensor hoping it would cure but now it cycles with the thermostat and almost pegs the gauge dropping to 3/4 and then pegging until the thermostat opens.
Aftermarket gauge with sensor installed at thermostat housing cycles as thermostat opens/closes and never goes beyond 200 degrees. It only hits 200 on the first cycle and the stays around 175-195. Could the replcement sensor be bad? |
08-13-2006, 08:27 PM | #2 |
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Join Date: May 2004
Location: Topeka, Ks
Posts: 2,293
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Re: Bad Temp Sensor??
I went through the same thing when I replaced my sensor. The one that came with the truck when I bought it never moved much at all so I picked a new one up at oreilly's and it did what yours did. I was in KC one day so I stopped at Chevy Duty and bought one of their sensors and it now works just like it should.
There is a difference in sensors, try another one. Jeff
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I'm not a pessimist, I'm just optimistic that bad things are going to happen. 1971 Cheyenne Super K10 - tilt, cruise, air, am/fm, tow hooks, factory buckets! 1986 Jeep J10 pickup, - 5.3L Vortec with 4L60e and NP241. |
08-17-2006, 03:04 PM | #3 |
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Location: Aviano, Italy
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Re: Bad Temp Sensor??
Thanks Chip.
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08-17-2006, 08:38 PM | #4 |
Oilfield Trash
Join Date: Sep 2003
Location: Raymore, Sk, Canada, Earth
Posts: 3,171
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Re: Bad Temp Sensor??
crustysarge, you running the stock engine? I have this problem with my gauge, turns out the sensors for the newer heads (3/8 threads) have different readings and wont work with stock gauges
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14 Dodge 3500 Mega Cab 08 Dodge 3500 Mega Cab 87 Chev 3+3 4x4 80 GMC K10 High Sierra bone stock 70 Chevelle 350SS long term project 68 GMC 3ton Grain Truck/Garbage wagon 50 Pontiac 2 Door Coupe Project "I've got a shotgun rifle and a 4 wheel drive and a country boy can survive" Hank Jr. |
08-18-2006, 03:08 PM | #5 |
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Join Date: Mar 2004
Location: Aviano, Italy
Posts: 221
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Re: Bad Temp Sensor??
Yep, stock. I thought it was 1/2"?
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08-18-2006, 03:32 PM | #6 |
Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: Bad Temp Sensor??
when you installed the new sensor you didn't put thread sealer or worse yet teflon tape on it did you??
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08-18-2006, 04:48 PM | #7 |
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Join Date: Sep 2004
Location: Lafayette Georgia
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Re: Bad Temp Sensor??
After I changed the instrument cluster in my K10 I started getting high temp readings. I actualy changed the cluster in Dec and didn't notice the high temps until summer. I changed my electric fan controls and my radiator before I wised up and borrowed an infrared thermometer and realized everything was still running cool. I was going to swap the temp gauges out but should I be looking at a temp sensor instead? If this is the case does anyone have a part# for the correct sensor?
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