I started the vehicle back up yesterday evening to see if by some stroke of luck it would still be working. Nope. I tried to look and see if I could see the clutch spinning but the sun was bright and I couldn’t see down in the dark hole. I tried looking from below but still couldn’t get a good glimpse of it. So I decided to take out the air cleaner box (not sure of the correct terminology but the place where the air filter is). One of the bolts was up under the box and there wasn’t enough room to get a wrench on the bolt and still be able to turn it so I had to cut a 10mm wrench in half. I got the nut loose and when I pulled it out the threads were nearly wore off about 1/4 inch from the end up the bolt. (More to come)
So now I could get a good look at the compressor and check the power running to the compressor. Positioned my voltmeter so as to have the truck running the least amount of time without a air filter. It was 14.3 volts according to my meter which is odd but it is power. Plug the power back to the compressor let it run for just a minute no cool air.
I go to put my air cleaner box back on and the boogered up bolt won’t start for anything. I decide, with my infinite wisdom, to drill a whole in the bottom of the box so I can get a socket and impact on the bolt. Well of course the hard plastic cracks and my whole becomes twice the size I had intended.
Should I patch this? And what recommendations for patch material would you have? Besides don’t be drilling holes in stuff.
I get everything back together. Hook up my manifold gauges and boom. Ice cold air. Low pressure drops from about 65 to 30 then back to 65 intermittently. High pressure around 170 on idle. So I rev it to 1800 rpms for about 2 - 3 mins. The low side top pressure is about 70 and the high about 200. The air is mysteriously colder when I’m NOT revving the engine.
This really seems as if the gauges are bypassing something or reducing the pressure enough on the low side to allow the pressure switch to disengage. Because when I was finished I did a check on the static pressure and the low was at 90 psi. D the high was at about 170 psi.
Thanks for the replies