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I got my first truck back…

I recently took over a 20 year old vehicle from the parents which they bought new. The cabin filter was in the same condition. After a new filter, I no longer need the blower motor nearly as much as the vehicle's speed is enough to move air through the vents now that the old plugged filter is in the landfill. Also decided to go with a charcoal layered filter which eliminated the musky odor after a few thousand miles. Well, Ok, I also had to use one of those scented bombs to help get rid of the odor, but at least nobody is complaining about the smell any more.

For the battery, Noco is certainly a nice product. Am using one for my LiFePO4 battery packs.

For a few $$ more, might consider something like a 5 - 10W solar charger as there is less wiring to mess with. Only downside to the solar charger is forgetting to unplug the thing before starting the engine as the array does not like back-feeding. These devices usually come with a LED inline with the positive lead which also acts as a diode to prevent back-feeding, but I like to keep my risk factors at zero instead of low. I am using a 5W solar charger on the Ferd diesel with good results from when it sits for a while.
 
I like the idea of the solar option. I might look into that.
Got the new headlight and marker housings installed and cerakoted.
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I got a thin bed of clear urethane on to seal up the top seal on Sunday. I checked the seal job I did yesterday with a garden hose on full blast. No more water inside.

I also found a can of wd-40 specialist rust release. I decided to soak the blower motor with this stuff for a bit and then spin it by hand for probably 10–5 minutes. It continued to get better to where it was pretty smooth when spinning it. I then cleaned it up with some electric motor cleaner. After it was dry I connected it to a battery and it worked! It smoked lightly at first but then cleared up and ran full speed. I did that a number of times and eventually let it run for 5 minutes or so. Decided to mount it back in the hvac box with a new Gm oe resistor (22807122) and it worked on all speeds but #5 Hmmm. Let it run on 4 for a while and put an amp clamp on it. The motor in the box pulls right around 13 amps. Not sure if that’s normal or not.

Sounds like I might need to check a fuse or two to figure out the #5 speed issue. That would be a bummer if the new resistor was bad. I’m tempted to just run this motor as it runs great now and smooth and quiet.
 
iirc the max fan speed bypasses the resistor and goes through a relay mounted up on the air box. maybe that relay got wet too?
 
Searching for the blower motor issue every thread seems to point to a 40a fuse that feeds the blower motor for high speed only. Problem is I only have a 40a fuse for ign A or stud #1 (which I assume is working — since the truck starts and runs fine). I then found a wiring diagram which seems to match my setup. Uses a 30amp fuse under the hood to power a relay which is part of the resistor module.
The rest of the hvac and slower blower speeds are powered by a 25a fuse in the driver side dash fuse box. I found the 30a fuse under the hood was blown. Swapped it out and now I have all 5 speeds. Unfortunately the motor was making a terrible screeching sound as it was spinning. So maybe my wd-40 / electric motor cleaner trick wasn’t enough. Oh well I had ordered a replacement blower motor anyways so swapped that in today and all is good. Got the panels put back together. Also changed the flasher relay to solve the hyper flashing led turn signals.
 
Was out of town the last few weeks. Back now so time to dig back into this one. Headed back to my buddies shop next weekend.

First up gotta cycle the abs pump as I’m pretty sure I got some air in there when changing the brakes and lines last time. I’ll use the tech2 to cycle it and bleed it again.
Then gotta change the power steering pump, gearbox and lines and of course some new fluid. That should button up the steering and take care of the slop.
If I have enough time I’ll take care of the driveshaft ujoints and the rear center hanger.
 
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