TEMPERATURE GAUGE READING

1985 - Present, Questions, discussions, regarding anything related to the Humvee. (NO AUCTION or EBAY)

Moderator: Kurt Lesser

Post Reply
MVFUNGUY
G-Private First Class
G-Private First Class
Posts: 11
Joined: Fri Jan 14, 2022 6:59 am
Location: Marietta, Ohio

TEMPERATURE GAUGE READING

Post by MVFUNGUY » Fri Jun 10, 2022 5:24 am

My Humvee runs up to 240* on the gauge when the GPC is plugged in. When I unplug the GPC the engine runs 180*-220*. I thought about buying a digital heat gun to measure the actual temp. I am assuming that my GPC causes the gauge to read incorrectly?


User avatar
Kurt Lesser
G-Lieutenant General
G-Lieutenant General
Posts: 3758
Joined: Sun May 16, 2004 4:08 pm
Location: San Jose, Ca
Contact:

Re: TEMPERATURE GAUGE READING

Post by Kurt Lesser » Fri Jun 10, 2022 1:12 pm

The temp gauge sensor for the gauge is located on the left side of the block behing the alternator but has nothing to do with the GPC. The temp sensor for the cooling fan is located on the crossover manifold but it only talks to the TDR. Both the sensor and the GPC get their power from pin A in the engine connector of the control box so something could be happening there. This is in trucks that have a GPC. Later trucks have another temp sensor where the old GPC used to mount. It all depends on which control box you have installed.
Kurt Lesser
US Navy, 1969-1975
M996A1 Ambulance w/M101A3 Trailer
M274A2 Mule
M151A1 Mutt w/M416B1 Trailer
M890 Crew cab

User avatar
86humv
G-Major General
G-Major General
Posts: 2740
Joined: Sat Aug 20, 2005 12:54 pm
Location: Texas

Re: TEMPERATURE GAUGE READING

Post by 86humv » Tue Jun 14, 2022 6:53 am

He probably un-plugged the time delay module.
86 Hmmwv
Lots A parts
M101A2 trailer
M1102 trailer


Post Reply

Return to “Humvee Technical Knowledge Base -”

Who is online

Users browsing this forum: No registered users and 10 guests