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Well, I am fighting two issues at once. Yes, it can blow cold air but the Freon is low. It has a leak in the EVAP which I am going to swap out as soon as the part arrives. Confirmed with a Freon leak detector. I would have also thought they should be on constantly with the AC on, but that is...

Thanks - so I will have to trace the wiring on the condenser fans back and figure out how they hooked it up. Just coincidental they stopped working with that switch change.

Yet another question for the collective. I did scan the electrical diagram I have for the M998 but I am not seeing this Fan Sensitivity switch. After converting my TH400 to a 4L80, I moved the Fan Sensitivity Switch that was located on the throttle body, to the back of the engine. I used the...

Thanks for all the guidance. After measuring the space available under the radio shelf, trying to not have to reposition the AC hoses, and looking for a 24V universal underdash unit which the old one seemed to be, I ordered one that should fit. But I have to find some new vent "registers" or...

Yeah, I looked at just replacing it with a Red Dot, but the Red Dots are too wide to fit under the radio shelf. I am trying to avoid having to redo the whole system, or just keep filling it up with Freon every few months. I found this one, made by Red Dot, that is supposed to be military for...

Well, two steps forward, one step back. I took the unit completely apart and I did find the leak. With the truck running, the detector goes crazy at the rear of the coils, near the fans, near the bottom. Nothing detected near those hose connectors. The bad news is that the coil is a brick, and...

Mine does look like one of the Red Dot headliner units I see in their catalog. Mine has a seperate controller. Once I remove the radio shelf hopefully I will see a model number and I can just order a new evap once I locate the leak precisely Thanks for pointing me towards Red Dot.

I did check those connections and no leaks from them. I was surprised they would hold that pressure too! I plan on taking it apart so I can look for hidden part numbers and the exact leak location

I did not see any obvious vendor markings as I suspect they are under the radio shelf. I was thinking it may be impossible to find a direct replacement part. Maybe someone can recommend one of the newer under dash units on the pass side where I could just buy a different interior setup, without...

I have done lots of successful AC repairs in my time on a bunch of cars. But since I don't have much experience with my M998, I thought I would ask the collective's advice. When I first got my M998 last year, the AC was a bit warm, and the sight glass showed bubbles. So I added about 3/4 of a...

I decided to waste some more $ on this topic. I scored a used turn signal switch off a surplus parts humvee so I knew it was genuine. The problem now is that alibaba is selling cheap chinese crap which now have the markings of US manufactured (real) ones. I am sure the US based part houses will...

I have to agree regarding the Optimas. In the old days, that 20 years ago, I could get 10 years out of them. Not anymore. Odyssey has a good reputation. You can order them through Battery's Plus. They even can get you fresh 6TL in a couple days. They have good coupons!

This would work except if you used the cheap Chinese crap that is available at the bargain price of only $300 or so, the return spring is not strong enough to return the little cam back to the center, and the arm itself is so crappy it is difficult for the cam to move at all. And the rings...

Yours like like it is the legit part. The one I got was a POS, and I imagine it was a China POS. It did not have the same part numbers as yours. On mine, I gave up. The spring I had was engaged in the two holes, but it was unable to bring the pointer back to the center - ever. I gave up on the...

Another Q for the collective. I have seen HMMWV that have rear AC installed. I did some quick searches and did not find any kits that have rear AC. My current AC is the one that mounts under the radio shelf. I supposed there might be some generic parts for civi trucks but they would be 12...

I agree, a junk yard swap will not have the same tranny that came out of HMMWV. There are differences. Take yours out and get it rebuilt by a local shop. That way if there are problems, you won't have to deal with shipping which is super expensive.

You are indeed correct, the mechanics that took care of it for me said the very same thing. I was extremely lucky to find a shop that would align it for me just up the road near me! They found that the four bushings on the right wheel were shot, and the bearings in the right hub were also...

For what it is worth, Vermont just let me renew my '92 M998 online. (y)

I did mine by myself and I am an old weakling. No helpers. Yes, I replaced the gearbox and tranny as one unit. I did have the exhaust and fuel tank out already since they were junk and I replaced both. So I did have quite a bit of room to maneuver. I had to also buy an engine lift, cherry...

Don't give up. Sounds like @Retiredwarhorses is your best bet. He will do it correctly. If I were only two hours away, I would let him do it. If not, I just went through a TH400 to 4L80 upgrade and I will give you a brief summary of the collective wisdom given to me by the wonderful experts on...