Search found 169 matches

by bohica2xo
Mon Jun 26, 2017 11:16 pm
Forum: Automotive Air Conditioning Forum
Topic: Lincoln Town Car - Complete replacement, how to clean?
Replies: 12
Views: 199

Re: Lincoln Town Car - Complete replacement, how to clean?

Evaporators are protected with the O/T screens. Whatever makes it past that gets stuck in the accumulator - the "J" tube & dessicant stops junk very well. The big pieces spoil the condenser. What makes it through that is stuck on the O/T primary screen. Hard to say what failed on your ...
by bohica2xo
Mon Jun 26, 2017 10:54 pm
Forum: Automotive Air Conditioning Forum
Topic: 99 Suburban Rear Evap Help
Replies: 11
Views: 256

Re: 99 Suburban Rear Evap Help

Thanks for posting what worked for you. Seems like the rear plumbing for those units leaks at a few different places, and people have found various ways of fixing them. The old site archive has some creative fixes, but this is the first mention I have seen with that repair material. In time with pos...
by bohica2xo
Mon Jun 26, 2017 10:46 pm
Forum: Automotive Air Conditioning Forum
Topic: 1985 Chevy Crew Cab
Replies: 2
Views: 23

Re: 1985 Chevy Crew Cab

The A6 & York were both 210cc / rev units. The Seltec 21HX / Valeo TM21 is a displacement match @ 210 cc/ rev: http://www.valeocompressors.com/en/tm21 The site sponsor can supply such a unit. Or you could use the York you already have mounts for - site sponsor can supply those as well. Bigger, h...
by bohica2xo
Sun Jun 25, 2017 7:43 pm
Forum: Automotive Air Conditioning Forum
Topic: Lincoln Town Car - Complete replacement, how to clean?
Replies: 12
Views: 199

Re: Lincoln Town Car - Complete replacement, how to clean?

Your low side connector is not depressing the Schrader valve. Schraders act like check valves if they are not depressed - you can push some refrigerant past them, but never get an actual reading of system pressure. With the system cycling - Grip the low side connecter firmly, pull the release ring b...
by bohica2xo
Sun Jun 25, 2017 12:53 pm
Forum: Automotive Air Conditioning Forum
Topic: 70 GMC, 134 retrofit problem
Replies: 15
Views: 347

Re: 70 GMC, 134 retrofit problem

While you might not be able to completely clear a sight glass on some conversions, a gushing stream of foam still tells a story. The advice to ignore a diagnostic tool comes from years old garbage conversions - leaving all of the mineral oil in place, undercharging the 134a to hold the pressures to ...
by bohica2xo
Sun Jun 25, 2017 12:39 pm
Forum: Automotive Air Conditioning Forum
Topic: AC System for engine swapped vehicle
Replies: 7
Views: 170

Re: AC System for engine swapped vehicle

The cycling switch serves the same purpose as the thermostatic switch - it prevents icing of the evaporator. You need one or the other, not both. If you have a high pressure cutoff switch (HPCO) it should be used as well. Your post is not clear - was the High Pressure Relief Valve opening & vent...
by bohica2xo
Sat Jun 24, 2017 4:49 pm
Forum: Automotive Air Conditioning Forum
Topic: AC System for engine swapped vehicle
Replies: 7
Views: 170

Re: AC System for engine swapped vehicle

The thermostatic switch is there to keep it from icing the evaporator. Really no need to change to CCOT operation. The thermostatic switch could be relocated, as long as it senses the evaporator temp to keep it from developing ice. This is a common replacement switch: http://www.truckerac.com/thermo...
by bohica2xo
Sat Jun 24, 2017 4:30 pm
Forum: Automotive Air Conditioning Forum
Topic: Mazda CX-9 not cooling well
Replies: 2
Views: 37

Re: Mazda CX-9 not cooling well

Condenser airflow issue. Fan(s) not operating at full speed, etc. Something lodged between the condenser & radiator blocking airflow - I found a full sized dead rat in a fan shroud last winter here in Vegas. The nest with babies was between the radiator & condenser. Locked fan caused a MIL .
by bohica2xo
Sat Jun 24, 2017 4:25 pm
Forum: Automotive Air Conditioning Forum
Topic: 70 GMC, 134 retrofit problem
Replies: 15
Views: 347

Re: 70 GMC, 134 retrofit problem

A couple of things to consider Your Sanden replacement is 8 CID/ rev. At idle it will never do what the 12 CID A6 would. The parallel flow condenser is a good thing, but it has to have good airflow. You mention spacing, but the more important issue is coupling. A weather strip at the edge of the con...
by bohica2xo
Fri Jun 23, 2017 10:56 am
Forum: Automotive Air Conditioning Forum
Topic: AC System for engine swapped vehicle
Replies: 7
Views: 170

Re: AC System for engine swapped vehicle

A lot depends on the system components - are you trying to use the OEM Volvo condenser? The GM CCOT system would mean changing to an accumulator after the evaporator at least. If you are seeing HPCO activity, you will need to get us some pressure readings & temps to help you. High / Low / Ambien...

Go to advanced search