IBMobile

Sounds like there is no power from the transmission control relay. Check for power at terminal 30 and 86 of the relay for power whit the key in the on position and go from there. Test this circuit.

Check this month's posts out.

Is that zero celsius or Fahrenheit?

If the hot leg insulation of the heater power cord rubbed through on the truck body there would still be 19 ohms when tested at the plug. If the ohm meter shows 0 ohms when the meter probes are attached to the hot led at the plug and the truck body this would be a short. If the test shows a reading of 0L or 1 then the wire is not grounded to the body. An open circuit is no connection. This is because of an open switch, a bad connection, a break in the wire, or high resistance due to corrosion. The ohm meter will show 0L or 1.

Did you ohm test the block heater circuit for a short to the truck body.

Have you redone the two ground wires for the PCM? They are spliced together lke the ones on the port side.

This might help, shows where to put the filter.

No, only going down hill with the switch. Ohm test between pin 87 of the transmission control relay in the PDC and the orang /black wire at the middle connector ( connector C2, pin 11) at the PDC. Should have around 80 ohms, the amount for the winding of the solenoid. If you have that reading then the connection at the connector is good and so is the solenoid.

Had same problem last summer. No lockup except coasting down hills with mystery switch on. Transmission ran warmer when towing on the flats by 10-20°F and over heated, up to 280°F going up hills. Did all the tests and replaced relay and solenoids the same as you have. Replacing the torque convertor, with a Dynamic overhaul, fixed the problem.

You may be losing prime over night. Try parking truck facing down hill. Wind chill temp has no effect on inorganic material; it's the actual temp that matters.

And when you were an adolescence you were looking at the Sears cataloged. Snap-On tool are great for the professional but overkill for the weekend DIY guy.

Is the chicken ready?

I have an Alltrade infrared thermometer with laser for pinpoint readings but they don't have them any more.. Bought it at Costco for around $80 about 18 years ago and it still works. I looked on Amazon for them and after six pages of infrared thermometers my eyes were shot. @Russ Roth has a good idea to get it at Harbor Freight. They have these three for sale https://www.harborfreight.com/search?q=laser infrared thermometer You can print out a 20% off coupon for additional savings https://shop.harborfreight.com/online_coupon.html?ccdenc=OTY0MTgyNDQ=&sdt=MjAyMC0wMS0xNw==&edt=MjAyMC0wMS0yMA==

I'm like @dripley and run Delo 400 15w-40 oil and change it between 7500 and 10,000 but that can be over a 2 year time since the truck gets driven between 4500 and 7500 a year.

Water sports at dripleys house.

Then they would slap an oxygen tax on us. One of my Volvos warming up in the morning.

It looks like a condenser used for noise suppression (static and/or whine) that you might hear on AM radio. Volvo used them on their ignition coil, attached to the negative terminal, and on the alternators.

Un hook the mystery switch from the wire between the transmission and the PCM and see what happens. If you have a good lock up clutch in the torque convertor the engine will stall if it is locked up when stopped.

First set of front brake pad replaced at around 43,000 miles; next set at 87,174 (Centrix Posi Quiet). The Centrix were replaced with Bendix Fleet Metlok pads 9/19/19 at 113,147 miles. The truck is used to tow an 8k LB 5th wheel 95% of the time. I wanted a stick shift but my wife had bad knees at the time and couldn't work a clutch.

@kzimmer I changed that hose out for a silicon hose a week later. The picture above is the first one I came across to post here.

Rule out a bad VP44 by doing a "hot wire" test. Do this https://www.bluechipdiesel.com/runningtests or the test below.

You're using an Edge EZ and RV275 like I have. I'm using an adjustable boost controller and have it turned up to 30PSI of boost. I got out of China for $5. Some other members ordered them but I think @Dieselfuture never got his.

A vehicle's GVW is based on it's stopping ability that is why the 8800 GVW brake parts are larger.

There are no bands to adjust in this transmission. There are only clutch packs. This video shows all the part in the transmission.