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Welcome to the SS forums!! Sounds like your transfer case is jumping out of gear, the shifter does not have any detents so adjustment of the shift linkage is not likely the issue, unless the linkage is binding somehow. This is a common issue with worn components in the T case, I would change the...

Have you changed the fluid and filter? a partially clogged filter can cause this when the fluid is thicker.

458A is switched 24V, ohming the harness wire will do no good as it also is also connected to the IP run solenoid and a couple other items. If you suspect the thermal switch jump the two harness wires together, 458A and 458B and if the switch is defective the fan will not run. If the fan still...

In eBay's defense because of their policies there is not much they can do 45 days after the sale, this is to give some protection to the sellers, before that the buyer has all the power, if an item is new or used the buyer has 45 days to open a case no matter what the seller states, the 30 day...

This may be of some interest. https://www.facebook.com/groups/hmmwv.repair.maintenance.diy.group/permalink/3860795570900967/

It is hard to see the rod when installing the pump, why I do it the way I do, but others have been successful without removing the plate.

It is easy to see when the pump is removed, it will fall as far as it can out of the block, the small plate behind the fuel pump prevents it from falling out. It is however fairly difficult to get something under the end of the rod and push it back into place at the same time you are installing...

You can bolt the pump up with the rod out of place, this almost always breaks the rod and or damages the pump. If you cannot get fuel out of the drain when running I would not get too far from home until you get it fixed. You can disassemble the check valves, clean them and re-install them, but...

There are also two check valves, one each in the suction and return fuel lines just ahead of the fuel tank, these can be troublesome. Most folks just remove them and replace them with a piece of fuel hose, they are installed with two short pieces of fuel hose each from the factory so removing...

When you change the lift pump you MUST insure the push rod is pushed up into the block, there are two common ways to do this. I remove the two 1/4" screws from the plate behind the pump and remove the plate and rod and coat the rod with grease and push it back into the block, put the plate back...

So to farther elaborate, if the lift pump is bad and the charge pump in the IP (injection pump) is pulling fuel, then all of the fuel "delivery" system has a vacuum on it including the filter, so if you open the drain valve and no fuel comes out you should immediately close the valve because the...

If the lift pump, pickup sock, check valves and fuel lines are OK there will be a positive pressure at the fuel filter and fuel will rapidly flow out of the drain when running.

The IP has a charge pump built in, if the lift pump is bad the engine can run with only the charge pump pulling fuel from the tank, it usually will have low power but it still can be started and run, but when the flow is stropped by opening the drain valve and allowing air in it is normally very...

If they were less than 45 days from the sale then you did not handle the return correctly, you should have opened a case and stated the reason is they were defective, if he accepted the return and did not refund your money then I have no issue with naming the seller as this is first hand...

If you open the fuel filter drain valve while running and it sucks in air and dies then ether the lift pump is bad or there is a problem with the suction line to the tank, a stuck check valve or a plugged fuel tank pickup sock, besides this thread is about 8 years old, I hope the OP has figured...

Welcome to the SS forums! that member has not been "seen" here for around 3 1/2 years.

You have to be very careful when installing a civy transmission, there are a bunch of little stuff, like the 4L80 (there is no need to add the E as all 4l80s were Es) But I degress, even the lockup solenoid is different for the 4l80s that had EPROMs in the TCM and the later units (used a...

I am sorry, I cannot speak on the value, down here they are selling many 3 speed R1 trucks that have gone through RECAP, they have GEP engines, 200A dual voltage alternators and a ton of other upgrades, still only 3 speed trucks though, you can get a decent one for around $4k or so, they of...

Looking at the WMOs it looks like it got 3 point seat belts and a steering cooler. Assuming the first two number in the serial number are zeros that is a 1986 model, very early in production. During rebuild is it likely received a rebuilt engine, if so it should be a 6.5L. It did not go...

The thermostatic switch has nothing to do with starting, unless you are talking about the TSU (temperature sending unit) the thermostatic switch controls the fan