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I had a similar situation, Turned out to be the balance weight on the rear drive shaft was just touching the metal shield on the side of the fuel tank. couldn't see a rub mark on the shield but the weight was shinny. Key was the put-put got faster as I speed up

Could the fan kick out switch on the injector pump be bad or sticking. that could prevent the fan from engaging . Sorry read the whole thread, now realize your running too cool, not a common problem with these trucks. My unit tested fine, fan came on and off when tested at idle but fan would...

I have found that on my truck (M1123) that if I slow down i can feel the engine braking , as soon as I lift clear off the throttle the torque converter releases and feels like free wheeling. So it will unlock if you touch the brakes or lift your foot off the throttle. Both the brake switch and...

This might help, the stock system is 24 volt.

I can't quite make sense of this because I cant tell which line your blowing into so at the rick of sounding dumb, pull a vent line off some where else and see if you can blow air through the line you are currently blowing on. There is only one line to atmosphere and if that happens to be the...

My speedo was jumpy too, Bought a new cable ( they are cheep) , Found a rough spot in the 90 deg adapter (not so cheep) transfer case had the wrong gear in it so i installed a new 41 tooth gear AND installed a set of Centramatics. smooooth sailing now.

Rubber duck 4X4 sell that scoop kit.

yep white sweet smoke will always give it away.

I would cover 1/2 the radiator with cardboard or a tarp and run it. that blockage should allow the unit to come up to temp and cause the fan to function. When satisfied the system works properly pull the tarp or cardboard off and sleep well knowing your truck is a rare one that runs cool.

The 2 that jump to mind are the Shell Rotella or the Delo 400, Probably the most used diesel oils. but there many to choose from.

All good points, I respect your opinion. seems everything in life is about trade offs you just have to pick what best fits your needs.

I gave up on compressors years ago in favor of the co2 tank. IMO the only way to go if running large tires, You can build it yourself or go to a company like Powertank.com and buy one. Keep in mind that your regulator will get icy when airing up large tires or running an impact wrench so the...

Just a guess, but if the power steering fluid gets low, the pump will pull oxegenated oil in and whine at a high pitch. steering still works and sound will vary with engine RPM. Worth checking the level or dropping the belt off the pump to check. I agree the cadillic valve is more of a hiss

Depends on what gears and tires you have, My truck has 3.0 gears on stock tires and running a 42 tooth gear puts the speedometer dead on. List the gearing on your differentials and what tires you are running and I am sure someone will chime in. Good luck

What your looking for is a Cannon Sure Seal Series connector Male P/N 120-8552-00 Female P/N 120-8551-00 and the pins are 3308672000 crimp pin and 0318703000 crimp socket. I have purchased them at several places like epay and www.newark.com happy hunting Randy Not that I am promoting any...

The nice thing about the switch is that anytime you need full power, like passing a car ( LOL) . it will kick the fan out and make the freed up HP available to the wheels.

If memory serves the switch is normally open so unplugging should work, I haven't tried it BUT look at it first. It's just a small micro switch on the side of your injector pump with a lever that pushes the switch when the throttle is pushed wide open. push the lever with your finger make sure...

Don't forget about the micro switch on the throttle lever, it's sole purpose is to kick the fan off when fording. if the switch sticks it will prevent the TDM from allowing the fan to come on.

Nice work, great attention to detail. I like it

Yep; We here in California have different problems -- Like -- never put ATF in your diesel fuel (like we use to do). Now we have what is called clear diesel and Red diesel the only difference is red diesel has red die in it and indicates for agricultural use only indicating that there was no...