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I would inspect the linkage and cable and the accelerator pedal carefully. Does there seem to be ANY other influence that could be a "precursor" to the event????

What gets me is the TPS controls the downshift, along with the programming in the TCM. So how is the TPS creating WOT without the shaft moving and at the same time the internal gov/linkage fails do do its job creating the same WOT condition as the TPS :eek: Or is the shaft actually moving.....

I do not believe "Humvee" and "afterburner" have ever been used together before :ROFLMAO:

HA, HA No I did the Chinese yesterday, I try and limit to about twice a week. No, today I have to go do my civic duty and then stop by DQ and get Diggy Dog a chocolate malt and me a pup cup, wait that does not sound right :LOL:

Thanks, I own a ranch in S TX, you can't swing a dead Rattlesnake around here without hitting a plug kit. Those are great for when you get bathed in tire sealant from that large thorn hole (yes they are that big) in the front tire on your tractor. IMHO the only way to patch any radial tire and...

Yea, I will have to break it down and take it to ye-ol tire shop.

Brand new tire :(

Ahhh, you fooled me by slumming with the XTL mic.. :ROFLMAO: Which is likely a better mic anyway, unless you drop it too many times.

Is that Motorola mic connected to a Spectra or maybe an XTL?

So it just stopped pulling the engine down when in park all by itself?

Welcome to the SS forums!

Check with aghumvee I purchased some NOS doors from him and I am very happy with the quality and price, there were some small imperfections (small brown spots) in the windows but it is hardly noticeable and of course this was discussed beforehand, He is a good guy!!!

There is no such thing as a free app. :eek:

IIRC the 765 is just a heavy duty 700R4, for simplicity sake I will call them 4L60 which is one of the designations used for the 700R4 They are both mechanical with a throttle cable. It takes a $500 (pre covid price) output shaft and adapter to use in the HMMWV as the 4L60 is a lighter duty...

Welcome to the SS forums!!

When you say it reads 230-240 do you mean all the time as when cold? or just when it is heated up going down the road?

In any case you should be able to shift into a gear with no synchronizers or working synchronizers while stationary as after short time the input shaft should stop and would not grind any gear, the fact that you grind the third gear while stationary shows you have a clutch that is not working...

Actually third having the synchronizers "burned out" may make perfect sense, I have no knowledge of the U99 but if it is like the 404 you would normally start out in third as 1-2 are low range, so over time as the previous owner drove it with a defective clutch they would naturally burn out the...

Third likely has poor or non working synchronizers You may be able to detect the very slight pulling down of the RPMs when stationary and going into gears that "work" that is the synchronizers stopping the clutch (transmission input shaft) that is not fully disengaging. the exorcise listed in...

Here is one thing to try, start the truck in 3rd gear, clutch depressed, then slip it into neutral and then see if you can slip it back into third gear keeping the clutch depressed the entire time.