I have been avoiding highway use, but had no choice today. While cruising at 55 mph on a warm 80 degree day there was a loud fan like noise that nearly made me jump out of my seat. It had no effect on speed or power, but it was a sound like when you step on the gas and the trans shifts, but obviously that wasn't the case. The noise kicked in for about 45 seconds or so then kicked off. Temp was pretty constant at about 210 on the gauge. It did this several times over a 10 mile drive. Is this normal? or does any idea have any idea? It is a m998 with a GEP 6.5
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Name that sound
- Thread starter Sintorion
- Start date
BLK HMMWV
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That was your cooling fan kicking in around 220
infidel got me
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No way......
badgerord
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WAY, big WAY!
I tell people it's the afterburner!
I tell people it's the afterburner!
CMPPhil
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Hi
It would fun if someone would put together an audio or video of all the common and not so common sounds of MVs make. The difference between the "Oh that's normal " and "The next sound is a big bang" would be useful.
On my trucks with no fan clutch when that roar goes away it means the fan belt is gone, which will be followed by the engine boiling.
Cheers Phil
It would fun if someone would put together an audio or video of all the common and not so common sounds of MVs make. The difference between the "Oh that's normal " and "The next sound is a big bang" would be useful.
On my trucks with no fan clutch when that roar goes away it means the fan belt is gone, which will be followed by the engine boiling.
Cheers Phil
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Still scares the crap out of me and I should be used to it by now.
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If you hate it as much as I did install the viscous clutch from the H1.
infidel got me
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NDT-- Are there any advantages to the old school fan clutch setup? Seems like it would be a bulletproof setup. Temps. stay the same, or any lower??? Like eliminating electrics and hydraulics out of the cooling system...
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The only disadvantage I can think of is that the fording lockout feature goes away. AM General had to design to the possibility that the HMMWV would be driven at 55 mph in 120 degree ambient temps and had to have a way to immediately ford without shattering the fan. I don't plan on doing that. With the viscous clutch, the cooling system works just like any other modern vehicle. No continual hunting of engine coolant temps.
infidel got me
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It's a mid- 80's fan clutch for a 350?
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