I was finally able to locate a shroud for the Pup and that really made a difference to the pressures. There's not tac, but with about a 1,ooo to 1,200 RPM , the outside temp was 92 degrees. With a fan 6 feet in front, the high side was 205 and the low side was 48. The temp out the vent temp was at 5...

Thanks for all of the replies. I've done a lot of reading today trying to find the answer to one of my question about the cooling temperature of the condenser. I ran across this and it pretty much say what your comment is. That shroud is going to be real important. I have my feelers out to the Isuzu...

I looked real close into the ports of the expansion valve and I only saw a little dirty oil. Wiping it out with a q-tip, I didn't feel any solids in it. I've always want a parallel flow for my 83 PUP, which is the same as my son's 84, but plumbing it up I'm not sure is feasible. The unit posted has ...

I'll look tomorrow at the ole one real close. It didn't just jump out at me when I removed it. This is the third TXV that I've had stuck in about 6 that I have worked on over the past 4-5 years. Most of the PUP's AC haven't worked for years when I get to work on them. The evaporator unit isn't much ...

Something else that I posted wrong was the pressures, shouldn't be in pounds, but stated as PSI. Again these ole eyes and mind aren't together.


GeraldK4NHN
Cayce, SC
"One test is worth a 1,000 opinions"

That is the pressure in PSI

Thanks for catching that.

Yes I did mean condenser, my proof reading didn't catch that. These ole eyes aren't what they use to be. 80+ years


GeraldK4NHN
Cayce, SC
"One test is worth a 1,000 opinions"

It's been a long while since I've been on here. I'm trying to revive an AC on a new to me 1984 Isuzu PUP that hasn't had the AC working for several years. It still has some pressure on it but not much Freon in it, just enough to be positive of about 40 pounds. I pulled a vacuum on it and it held wel...