[DeTomaso] Fw: Re: Exploding air conditioning system - Fake News or an accident waiting to happen?

[Mike Drew]

…called a ‘trinary’ switch (as opposed to binary).

I think Charlie’s car was fitted with one as part of his AC overhaul years ago?

Mike 

Sent from my iPad

> On Jun 19, 2022, at 13:14, Thomas Törnblom <tipo874 at gmail.com> wrote:
> 
> We had a hose release the charge inside the cabin on the Autobahn, probably on the way to Italy.
> Turned out it only released parts of the charge and then closed up again.
> We replaced the pressure switch with one that shuts the compressor off for both under and over pressure.
> 
> Thomas
> 
>> 19 juni 2022 kl. 19:04 skrev gonancy at juno.com:
>> 
>> The cars behind you back away in a hurry when the air conditioner lets go on the highway. Very dramatic. 
>> GoNancy
>> 
>> ---------- Forwarded Message ----------
>> From: "Charles Engles" <cengles at cox.net>
>> To: <charlesmccall at gmail.com>, <detomaso at detomasolist.com>
>> Subject: Re: [DeTomaso] Exploding air conditioning system - Fake News or an    accident waiting to happen?
>> Date: Sun, 19 Jun 2022 11:23:51 -0500
>> 
>> Dear Charlie,
>> 
>>           This may be pertinent to your question.   I had twenty years of
>> AC malfunction finally diagnosed correctly and rectified by Frank Jerome in
>> DFW.  With the new Sanden compressor and R134 the system would malfunction
>> after a full charge in a variable amount of time due to a covert bad high
>> resistence electrical connection to the condenser fan that greatly impeded
>> fan function and therefore condenser function and efficiency.   I am sure
>> that due to that nefarious combination, I ran high AC system pressures that
>> would then peak in a silent, non-explosive, and expensive cloud of white
>> R134 gas billowing out of the engine bay and readily visible in the rear
>> view window.   Based on multiple episodes of this before it was found and
>> repaired, I am confident that you will not suffer a Hollywood-style dramatic
>> explosion of your AC system.   Just be aware that if you see the white cloud
>> in your rear view mirror, which may last for 1-2 minutes, you can maintain
>> speed, but be prepared to drive with the windows wide open.......  :-)
>> 
>>                     Warmest regards, Chuck Engles
>> 
>> 
>> -----Original Message-----
>> From: DeTomaso [mailto:detomaso-bounces at server.detomasolist.com] On Behalf
>> Of charlesmccall at gmail.com
>> Sent: Sunday, June 19, 2022 8:06 AM
>> To: detomaso at detomasolist.com
>> Subject: [DeTomaso] Exploding air conditioning system - Fake News or an
>> accident waiting to happen?
>> 
>> Hi all
>> 
>> 
>> 
>> In the 20+ years that I've had my Pantera, the air conditioning has only
>> worked for a few sporadic months. It works fine when charged, but we can't
>> find the source of the leak, despite having changed nearly everything that
>> could be changed. So the system was charged again a few weeks ago preparing
>> for my trip to Le Mans Classic, and this guy did find a crimp that looked
>> suspicious, so we'll see how long I have cool air. 
>> 
>> 
>> 
>> Anyway, I seem to remember that we all know that at higher speeds (85mph+)
>> there is a low pressure area behind the AC condenser, which is why some
>> people move them up front. I also seem to remember something about the
>> system pressure getting too high because of inadequate cooling, and this
>> high pressure causing the system to explode. Is this correct? Is there a
>> risk from leaving the AC on full speed, non-stop for hours on end of high
>> speed highway cruising with the stock condenser set-up?
>> 
>> 
>> 
>> Thank you!
>> 
>> 
>> Classification: Restricted
>> 
>> 
>> 
>> 
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