6erwebb
Junior Member
- Joined
- Dec 12, 2014
- Posts
- 2
- Reaction score
- 0
- Location
- Nashville Tn
- First Name
- Webb
- Truck Year
- 1991
- Truck Model
- k2500 Suburban
- Engine Size
- 350
So my suburban is stock, 150k ac wasnt working when I got it which turned out to be a leaky compressor. So I got a new pancake compressor, dryer, and orifice tube.
Everything installed I pulled a vacuum on it and let it sit overnight. When I hooked the gauges up the next morning... PERFECT, no leaks. Still had every bit of vacuum I left it with.
Well I added refrigerant, slowly, only it didnt hold much 2.7 lbs to be exact but the pressures showed correct: 214:45 on a 95 degree day.
So I take it out and running down the road it just didnt cool great. I dont have a thermometer for the vents but on that 95 degree day, full blast ac seemed only enough to be able to stand the windows being up. Maybe 60-65 degree air?
When I got back I checked the pressures and theyd jumped to 275:58... I thought I had overcharged it and on shut down found the ambient pressure to be 110psi. So I let a bit out, down to 100. Started and checked again the pressures were right back up there 270:55... only this time when I shut down the ambient pressure was at the top of the low side gauge at 125psi!?
Now, Im just learning about ac and only have a moderate concept of it all but what could cause this?
The condenser is clean of debris but the truck does have a winch bumper fitted (pictured below) which is coming off today, I just needed a reason. Could the system itself be dirty? I didnt clean anything out and it did have A LOT of dye in it..
I appreciate ANY tips you guys can give.
Excuse my mug in the photo:
Everything installed I pulled a vacuum on it and let it sit overnight. When I hooked the gauges up the next morning... PERFECT, no leaks. Still had every bit of vacuum I left it with.
Well I added refrigerant, slowly, only it didnt hold much 2.7 lbs to be exact but the pressures showed correct: 214:45 on a 95 degree day.
So I take it out and running down the road it just didnt cool great. I dont have a thermometer for the vents but on that 95 degree day, full blast ac seemed only enough to be able to stand the windows being up. Maybe 60-65 degree air?
When I got back I checked the pressures and theyd jumped to 275:58... I thought I had overcharged it and on shut down found the ambient pressure to be 110psi. So I let a bit out, down to 100. Started and checked again the pressures were right back up there 270:55... only this time when I shut down the ambient pressure was at the top of the low side gauge at 125psi!?
Now, Im just learning about ac and only have a moderate concept of it all but what could cause this?
The condenser is clean of debris but the truck does have a winch bumper fitted (pictured below) which is coming off today, I just needed a reason. Could the system itself be dirty? I didnt clean anything out and it did have A LOT of dye in it..
I appreciate ANY tips you guys can give.
Excuse my mug in the photo:
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