Search results

It's over 20 years old, stuff breaks, I would suspect the gauge but I certainly could be wrong. The temp sensor, an RTD ( resistance temperature detector) is a pretty simple device.

No reason the re-invent the wheel, only two components to deal with and the next guy will appreciate it being stock, at least I would, does it start out indicating cold and then go to maxed out? Are all the other gauges acting normally? I think CAMO has measured the curve on that sending unit...

That is called afterglow it should stop 2-3min after startup, you can generally see it on the volt meter, the needle will swing back and forth, that is a good thing, means your PCB is working. It would not be uncommon to see 230deg on a HMMWV the gauges are also not known for their accuracy...

Is the fan coming on? at speed you would know, they make allot of noise, to test you can unplug the TDM module and the fan will run all the time so you could test if that helps.

That procedure would be relevant for your truck also, the basic instrumentation is for the most part the same in all HMMWVs except for the later speedos.

Great catch!, the correct manuals are on the link I posted also.

https://www.nsnlookup.com/equipment-intelligence/land/hmmwv There are no bad questions, the original study was with a basic truck that likely had a 60A alt, your truck should have a 200A dual voltage alt, It is actually best to use an inverter for the radios for example as the chance of...

The HMMWV does not have the electronic injection pump, so no module to relocate. Depending on what your 12V needs are and if you have a dual voltage alternator (you should on that model) you may not need the 12V add on alt. There are also many 24v/12v converters that you can use. EDIT if you...