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Glad you got what you wanted. One tip for summer driving the M35. Raise the windows and close the side vents. Then open the windshield as much as you can stand. Once you get above 20 mph it will feel cool. I know it sounds counter intuitive, but it works. I drove a M35 down I-10 from Las...

If you have the FMV paper filled out and the pictures it requires. Nothing else needs to be done legally with a clerk who knows what they are doing. Kindly suggesting they call Austin is your best bet the next time this happens. I have to use that suggestion every time we get a new clerk at...

You are correct that someone switched some wires around. Probably. You are going to have to look up the wiring diagram in the back of the -20 TM and follow each wire going to and from the controller and relay. Something isn’t hooked up correct.

The batteries are in series for the 24 volt part of the truck. However, the 12 volts for the 12 volt side of the truck is pulled from the ground wire of the back battery. I know that makes it as clear as mud. The -20 Technical Manual has a great 75 page electrical trouble shooting section plus...

You hit on the main reason I haven’t even search for exhaust brake information yet. Intuitively it seems turbo damage is a very real possibility. That is why Jake brakes are preferable in my opinion.

Keith, the 4L80E coast in over drive. If 1, 2 or 3 are manually selected it will bring the engine rpm up. But, with no throttle valve or exhaust brake. The diesel just revs but doesn’t really contribute to slowing my 7-8K pound truck on the steep grades. 1st selected would have the engine up to...

Thanks for watching. The Cowdog did do good and I still need to get 1300 miles home with it. But, after the first 90 miles it will all be a gentle decent of almost 5,000 feet.

Jennifer and I have spent the last week and a half driving the Cowdog around and over the mountains of Colorado. I never really appreciated what no engine braking with the 4L80E meant until this trip since I am a stupid flatlander type. I now need to move away from stock brakes and go race truck...

Since the truck is new to you. You want to replace all of the fuel and air filters yourself so you know they are new and correct. Use the directions in the Technical Manual to change the fuel filters in such a way as to make it start right back up again. See if the problem still exist. If it...

What do you want to know Chis? It is a Compushift without the bluetooth option since it is now 5 years old: https://www.hgmelectronics.com/transmission-controllers/

Crutchfield will sell you the speakers and mounts. Just put in for a K5 blazer. I did that on one of my M1009’s. However the choice for that size isn’t the best. I went with kick panel speaker mounts and 6” speakers when i built the Cowdog Suburban. Much better options.

I have written a lot about injection pump timing in this thread with promises of a video of how to read the timing. I finally got around to making such a video:

Keith, I tip toed around that can of worms with care I thought. But, you are correct.

A CUCV should have 12 volts at the glow plug. If you have 24 volts then something is wrong. Do you have the firewall mounted glow plug resistor behind the vacuum pump? To answer your question premise. Voltage at the glow plug just means that you are getting power to it. The only way to test the...

The glow plugs are needed anytime the inside of the cylinder is less than 159° according to a really long and boring paper Bosch published years ago. So, check your glow plugs and replace them if needed. Here is a video of how to test them if you want to do that:

A cast crank will have a very sharp thin line on the counterweights of the crank. A forged crank will have a very wide line that is kind of irregular.

I don't remember if it is a GEP or not. If GEP then the crank could be forged. Keep that. Otherwise, yeah it is yard art.

I have not tried welding with the 24 volts. So, no comment on that. I have 2 M1009 trucks that just start every single time I turn the key. I liked the 12/24 volt set up so much I made my M715 that way when I swapped in a 6.2 10 years ago. It also starts everytime I want it to. I had a 12...

It reads like a wiring issue for that one side. However, the rubber isolators for the headlight panel are there for a reason. There is also a note in the 1964 TM about making sure the idle speed is high enough for just this reason, blown headlights because they got shaken to death. 850 is stuck...

The cloth covered ones are much easier to put on and off because they don't need the clamps. Here is some on Amazon: https://www.amazon.com/6-2L-6-5L-Diesel-Injector-Return/dp/B073PXVWY6 I bought 5' from I think Badger Diesel several years ago for less than the kit I linked. The cloth...