Temp Sending Unit/Temp Gauge... - Blazer Forum - Chevy Blazer Forums

Go Back   Blazer Forum - Chevy Blazer Forums > Mechanical & Maintenance > Engine & Transmission
Sign in using an external account
Register Forgot Password?

Closed Thread
LinkBack Thread Tools Search this Thread
Old 03-27-2010, 01:13 PM
Beginning Member
Join Date: Aug 2009
Posts: 15
Malachai is on a distinguished road
Default Temp Sending Unit/Temp Gauge...

I feel I am going to have to replace one or the other, but, thought I would ask anyway...

When I first start my 92 Blazer s-10, The temp gauge reads fine for a while, then starts its slow creep up. If I gun the engine to get up to speed, it will spike to 260, then crawl back down again to an acceptable range. However, if I stop at a gas station or something, only for a few minutes, and start the truck back up again, it will spike to 260 and stay there for however long it takes til I shut it off again. Is this something I can repair, or do I need to replace the sending unit?

Old 03-27-2010, 10:00 PM
Senior Member
1994 Chevrolet S-10
My Garage
Join Date: Dec 2009
Location: Keller, Texas
Posts: 845
Gimpy Blazer is on a distinguished road

Do you have digital or regular gauges? If you can get an idea of your actual water temperature and measure the resistance of the sensor the values are 104 degrees F - 1300 ohms, 203 degrees F about 220 ohms. Resistance gets less the warmer the sensor gets. It sounds like you have a sensor problem. Have you cleaned the terminals and connectors in the circuit? You can also ground the wire to the sensor and your gauge will read hot to check the gauge.
1994 Blazer Tahoe LT, 4X4, 4 Door, Loaded, Lots Done to Restore, Still More to Go
1984 GMC Jimmy Sierra Classic, 4X4, 2 Door, Soon to be Restored
Old 03-27-2010, 10:00 PM
Closed Thread

94, blazer, coolant, gauge, gm, located, s10, sending, slowing, spikes, stop, temp, tempature, temperature, unit

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Featured Sponsors
Vendor Directory
Our Sponsors

All times are GMT -5. The time now is 12:10 PM.

Internet Brands, Inc.