Search found 17 matches

by scoob8000
Sun Aug 15, 2021 4:30 am
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

Re: 1995 Buick Roadmaster - Poor Cooling - Pressures

You definitely don't want a front mounting ear to break off of a new compressor after going through all the work and expense of repairing, evacuating, and recharging the system. And it won't be covered under warranty, as Tim alluded. Can you jack-up the engine a little bit to gain some clearance fo...
by scoob8000
Thu Aug 12, 2021 3:01 pm
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

Re: 1995 Buick Roadmaster - Poor Cooling - Pressures

Definitely. I just fought with getting the compressor out. Probably spent 3 hours fighting the bracket on the back. Can't get on the bolts because it's between the frame and block. It's a HD6 unit. 3 mounting ears on the front, two bolts in the back thru a bracket to the engine block. Few guys on th...
by scoob8000
Thu Aug 12, 2021 11:39 am
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

Re: 1995 Buick Roadmaster - Poor Cooling - Pressures

Pulled the o tube. Not really suprised. It's full of metallic grit. Not black death, but definitely lot of metal. Gonna fully flush and RR the compressor, tube, and accumulator. I'll post updates. https://files.catbox.moe/k8c1ls.jpg https://files.catbox.moe/v6559z.jpg https://files.catbox.moe/pgilba...
by scoob8000
Mon Aug 09, 2021 6:21 am
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

Re: 1995 Buick Roadmaster - Poor Cooling - Pressures

Thanks. They are electric fans (2 of them). The condenser looks good. I actually sprayed it down with some purple power and hosed it down in the midst of all this troubleshooting. I believe you are correct on the pressure switch. We've actually got a couple of these cars. I think my first foray on t...
by scoob8000
Sat Aug 07, 2021 2:05 pm
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

Re: 1995 Buick Roadmaster - Poor Cooling - Pressures

I just went out and checked the evap tubes. Both feel about the same. (cool). I can't really get my fingers on the tube near the condenser where the o-tube goes. I was going to try to see if there was a noticeable temp difference before and after it. The high side at the condenser is HOT after only ...
by scoob8000
Sat Aug 07, 2021 12:10 pm
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

Re: 1995 Buick Roadmaster - Poor Cooling - Pressures

It's a bit hotter out today. 88 degrees, and 55% humidity At 1800rpm I'm seeing 50L/250H with both condenser fans running, control set on max, all windows open. After a short highway drive, the lowest I saw my vent temp drop to was 58 degrees. After getting back home, there was only minimal condensa...
by scoob8000
Thu Aug 05, 2021 4:52 pm
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

Re: 1995 Buick Roadmaster - Poor Cooling - Pressures

Well that was $80 at the shop wasted. $60 to recover and vacuum, $20; to recharge to factory specs. I asked what they recovered but they couldn't tell me. 😔 Cooling feels about the same, pressures about the same. It's 50% rh, and the accumulator is just slightly cool to the touch. No condensation on...
by scoob8000
Wed Aug 04, 2021 12:39 pm
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

Re: 1995 Buick Roadmaster - Poor Cooling - Pressures

Thank you. I'll look into a local shop to evacuate the system. Hasn't thought that one might not charge, just to recover. I was basing my assumption of overcharge on the low side pressure. Now I see that isn't accurate. :) I'll try the condensor test. Good info there and with the o-tube for future t...
by scoob8000
Tue Aug 03, 2021 5:01 pm
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

Re: 1995 Buick Roadmaster - Poor Cooling - Pressures

I don't have any way to reclaim the system. 😔 I just put the gauges on again tonight to double check. As per my manual for temp/humidity my low side is only 5-7psi above max. High side is about 100 psi below max. I did notice tonight after a few minutes of testing the high side fitting is hot enough...
by scoob8000
Tue Aug 03, 2021 6:22 am
Forum: Automotive Air Conditioning Forum
Topic: 1995 Buick Roadmaster - Poor Cooling - Pressures
Replies: 21
Views: 37016

1995 Buick Roadmaster - Poor Cooling - Pressures

Not sure what's going on with this car. Seemingly the cooling started suffering. Fans running, good airflow, etc. Wish I thought to spray the condensor with the garden hose and watch the pressures. Pressures are around 35/175. 75 degrees out, 50% humidity. Center vent only getting down to 55. @ 2000...