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

Engine & Transmission Post your Engine and Transmission related problems here.
Sponsored by:
Sponsored by:

Closed Thread
Thread Tools Search this Thread
Old 03-27-2010, 02:13 PM
Beginning Member
Thread Starter
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, 11:00 PM
Senior Member
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.
Closed Thread

Related Topics
Thread Thread Starter Forum Replies Last Post
92 blazer temp sending unit (gauge) Cidium 1st Gen S-series (1983-1994) Tech 15 04-03-2011 10:28 PM
Temp switch and/or Temp gauge sending unit and/or Temp sensor? "w" engine zakm0n Engine & Transmission 5 01-09-2011 08:31 PM
Oil pressure gauge issue -- Gague, sending unit or wiring? The Mad Hatter 1st Gen S-series (1983-1994) Tech 2 06-26-2010 10:51 PM
temp gauge sending unit ant2297 Engine & Transmission 2 03-27-2009 11:52 AM
Temp Gauge Spinning / Temp Sending Unit mboehler 2nd Gen S-series (1995-2005) Tech 7 01-16-2009 08:16 AM

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 Off
Pingbacks are Off
Refbacks are Off

Featured Sponsors
Vendor Directory

All times are GMT -5. The time now is 10:46 PM.

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.