Search found 42 matches

by 71403
Mon Jul 17, 2017 8:06 pm
Forum: Automotive Air Conditioning Forum
Topic: Compressor will not cycle with LPCO jumpered
Replies: 6
Views: 3697

Re: Compressor will not cycle with LPCO jumpered

There's also the high pressure cutout switch on the back of the compressor. Might be easier to back-probe at PCM can verify a/c request and compressor relay control at the same time. Is this an early 90's full size FWD Buick? Been a while but recall there were problems with moisture/corrosion in the...
by 71403
Wed Jul 12, 2017 7:41 am
Forum: Automotive Air Conditioning Forum
Topic: Chrysler minivan a/c mechanically good, but no cold air
Replies: 9
Views: 4825

Re: Chrysler minivan a/c mechanically good, but no cold air

If it's ATC the manuals show the evap temp sensor is on the TVX block underhood. Still a bit buried but better than dash R&R.
by 71403
Tue Jul 11, 2017 2:31 pm
Forum: Automotive Air Conditioning Forum
Topic: Chrysler minivan a/c mechanically good, but no cold air
Replies: 9
Views: 4825

Re: Chrysler minivan a/c mechanically good, but no cold air

Is the van auto or manual temp control? ATC the evap sensor is on the TVX block underhood, manual temp control is in the evap case behind dashboard.
by 71403
Tue Jun 20, 2017 7:47 pm
Forum: Automotive Air Conditioning Forum
Topic: '93 Silverado c1500 AC replacement
Replies: 4
Views: 2861

Re: '93 Silverado c1500 AC replacement

Have installed a few of the off-brand replacements that are PF in spec and appearance. Haven't had a bad one yet to cut open and verify true PF. Quality is questionable - sent back two that came with metal chips in the discharge line. There is a AC-Delco parallel flow condenser for these trucks it's...
by 71403
Fri Jun 16, 2017 6:25 pm
Forum: Automotive Air Conditioning Forum
Topic: V5 shaft seal leak
Replies: 2
Views: 2015

V5 shaft seal leak

Replaced shaft seal late last summer and it seemed ok. Held over winter but started using it this summer and found clutch wet with oil again. This AM found clutch wet with oil _again_ so tore it down to get a better look at shaft seal area since it only seems to leak while running. Assuming it is le...
by 71403
Mon Sep 19, 2016 6:56 pm
Forum: Automotive Air Conditioning Forum
Topic: Adding electric fans to antique car
Replies: 3
Views: 3084

Re: Adding electric fans to antique car

You don't say what you have for a radiator now but if it's a copper/brass change it out for an aluminium. Doesn't have to be fancy $$$ retrofit unit my experience running big block Olds motors in A-bodies was a single row AL from a late 80's GM FWD cooled better than any 60's/70's 3-row copper/brass...
by 71403
Mon Jul 25, 2016 12:53 pm
Forum: Automotive Air Conditioning Forum
Topic: Determining correct charge weight for non-stock A/C
Replies: 3
Views: 4208

Re: Determining correct charge weight for non-stock A/C

95deg / 60% RH @ 2500rpm non-recirc/doors open high side spikes to ~280psi but when fans get to full speed drops to 230psi and holds it there. We only see temps like this a few days a year (Metro NY area) so it's a worst case. In heavy stop n go traffic, high side ~180 with center vent 43-44deg on r...
by 71403
Sun Jul 24, 2016 9:39 pm
Forum: Automotive Air Conditioning Forum
Topic: Determining correct charge weight for non-stock A/C
Replies: 3
Views: 4208

Determining correct charge weight for non-stock A/C

Trying to find out how to determine correct charge level for a non-stock system. Have a V5 compressor on a chevy 4.8 LS motor in a '94 C1500 pickup. Original evaporator, new accumulator, aftermarket parallel flow condenser, stock black/white orfice tube, dual electric fans, custom hoses within a few...
by 71403
Wed Jun 01, 2016 7:19 pm
Forum: Automotive Air Conditioning Forum
Topic: R4 compressor upgrade...V5? V7?
Replies: 6
Views: 4535

Re: R4 compressor upgrade...V5? V7?

The output is controlled by the internal valve.

Here's one that looks like it's on the original R4 bracket of a a typical SBC serp belt drive might ask the poster.

https://youtu.be/P5hkkgqcE3Y
by 71403
Wed Jun 01, 2016 6:20 am
Forum: Automotive Air Conditioning Forum
Topic: R4 compressor upgrade...V5? V7?
Replies: 6
Views: 4535

Re: R4 compressor upgrade...V5? V7?

The suction/discharge on the V5 is reversed compared to the R4, will require lines to be made up.

I'm running a V5 on the same truck - it's worth the effort.

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