Search found 39 matches

by 71403
Mon Aug 13, 2018 4:01 pm
Forum: Automotive Air Conditioning Forum
Topic: strange cooling
Replies: 43
Views: 1210

Re: strange cooling

working right now on the 2nd injection system and can not get this thing above 13 mpg on 4 buck gas. I am vacillating between an LS and a Hemi. In either case if I use the compressor that comes with the engine it should solve the compressor at idle issue. Injection as in EFI? Fuel-wise the only thi...
by 71403
Fri Aug 10, 2018 8:18 pm
Forum: Automotive Air Conditioning Forum
Topic: AC Compressor Stopped Engaging
Replies: 16
Views: 151

Re: AC Compressor Stopped Engaging

The round pressure switch on the back of the compressor. Put a test light to that and battery positive compressor clutch engages Ah, ok, so exactly what a shop told you a few posts ago? Then you need a wiring diagram and figure out what's wrong, Can buy short term access from Mitchell or Alldata.
by 71403
Fri Aug 10, 2018 9:47 am
Forum: Automotive Air Conditioning Forum
Topic: AC Compressor Stopped Engaging
Replies: 16
Views: 151

Re: AC Compressor Stopped Engaging

When I hook up test light to battery positive and touch compressor wire harness from back of compressor - the AC clutch will engage and I get cold air. Need to specify which wire(s) you're talking about. Picture would help. Just not sure what the smartest approach would be money wise. Trip to a sho...
by 71403
Thu Aug 09, 2018 9:49 pm
Forum: Automotive Air Conditioning Forum
Topic: AC Compressor Stopped Engaging
Replies: 16
Views: 151

Re: AC Compressor Stopped Engaging

It's a switch, no polarity, so doesn't matter A vs B.
by 71403
Thu Aug 09, 2018 1:50 pm
Forum: Automotive Air Conditioning Forum
Topic: AC Compressor Stopped Engaging
Replies: 16
Views: 151

Re: AC Compressor Stopped Engaging

It's a lot harder without a real scan tool but here's a few basic steps 1. Verify the two 10A fuses in the underhood fuse panel for the compressor clutch and clutch relay supply are good. ("Ign E" and "A/C Comp") 2. With a/c requested from the HVAC control, verify +12 volts at hi...
by 71403
Thu Aug 09, 2018 11:38 am
Forum: Automotive Air Conditioning Forum
Topic: AC Compressor Stopped Engaging
Replies: 16
Views: 151

Re: AC Compressor Stopped Engaging

The engine computer controls the a/c clutch on that truck, there's many things non-a/c related that will cause it to not engage the compressor. Assuming gauge on death can is ballpark correct you have enough pressure to satisfy the cycling and low pressure switches - if it's not engaging it's an ele...
by 71403
Sat Aug 04, 2018 6:42 am
Forum: Automotive Air Conditioning Forum
Topic: Trinary Switch Selection
Replies: 1
Views: 95

Re: Trinary Switch Selection

Fan should come on with the a/c request not pressure alone. If using two speed fan(s) can use high pressure switch to activate the high speed. Ideally the fans should disable over ~30mph. The stock ECM doesn't control fans but if you're into tuning there are code patches and upgrades to allow for it.
by 71403
Sat Jul 28, 2018 2:27 pm
Forum: Automotive Air Conditioning Forum
Topic: R4 questions
Replies: 5
Views: 146

Re: R4 questions

Flat hose block with non-stepped o-ring compressor is ok as-is. Are you saying it had a stepped port compressor with that flat hose block? That would require "pilots" or stack of washers neither of which I like to do.

Tho I'd be more concerned about kink on the discharge line.....
by 71403
Wed Jul 04, 2018 7:24 am
Forum: Automotive Air Conditioning Forum
Topic: strange cooling
Replies: 43
Views: 1210

Re: strange cooling

06-11 is factory PF. Did a '03 CV last week the failed condenser was serpentine but the aftermarket replacement was PF. Site sponsor might be able to get you better measurements but I have is 27" x 19". Not sure if that is overall or core. If your taxi shops are anything like ours they wil...
by 71403
Tue Jul 03, 2018 5:15 pm
Forum: Automotive Air Conditioning Forum
Topic: strange cooling
Replies: 43
Views: 1210

Re: strange cooling

Those dimensions are pretty close to a stock Crown Vic condenser. The later Crown Vic is factory PF but has trans fluid cooler integrated below the condenser. Another close in size is early 90's GM full size trucks. A lot of original tube/fin condensers are now supplied by the aftermarket in PF.

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