960 air conditioning Q and info....

  • Thread starter Thread starter Randy G.
  • Start date Start date
R

Randy G.

The Q first- where is the high-pressure-side connection for a gauge on
this car (1993 960 estate)?. The low pressure is right near the
drier(?.. the silver canister near the fire wall). I ask because....

I went to an air conditioning shop recommended by my alignment guy
(who I trust). They couldn't find the high side port and said this car
doesn't have one. They said they added about a pound of refrigerant.
The air is now really cold and worked great yesterday on the way home
from the shop. Actually was dripping condensation from under the car
as it should for the first time in a while. The recirculation "off"
button turned off as well (lit automatically when car is hot inside
and then unlit when it cooled off). They said some other contradictory
things as well- each of which may not be a big deal but when taken all
together makes me not want to go back there again.
__ __
Randy & \ \/ /alerie's
\__/olvo
'93 960 Estate
 
If it is like a 940 there are 3 high pressure ports behind the grill.
They have pressure switches in them.

Al
94 940 166 Kmi
Had
94 940 257504 mi Crunch- Parted out
94 940 165 k mi Daughters
86 240 320 K mi
81 240D ate transmissions
79 245D
 
VRparts said:
If it is like a 940 there are 3 high pressure ports behind the grill.
They have pressure switches in them.
Click to expand...

I got those, but without removing a switch it is it possible to
install a test gauge? Is there a valve behind the switches that keeps
the R134a from escaping? Can a hihg-side pressure gauge be installed
there for the purpose of testing and/or filling?

Thanks!

__ __
Randy & \ \/ /alerie's
\__/olvo
'93 960 Estate
 
Randy G. said:
I got those, but without removing a switch it is it possible to
install a test gauge? Is there a valve behind the switches that keeps
the R134a from escaping? Can a hihg-side pressure gauge be installed
there for the purpose of testing and/or filling?

Thanks!

__ __
Randy & \ \/ /alerie's
\__/olvo
'93 960 Estate
Click to expand...

Behind the switches is something like a large tire valve (schrader
valve). These switches control the fan speeds (low and high) and the
compressor cutoff if the pressure gets too high, so operating with one
disconnected for testing purposes won't hurt anything. (Reconnect the
switch to the wiring harness after removal)

--
Mike F.
Thornhill (near Toronto), Ont.

NOTE: new address!!
Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)
 
Mike F said:
Behind the switches is something like a large tire valve (schrader
valve). These switches control the fan speeds (low and high) and the
compressor cutoff if the pressure gets too high, so operating with one
disconnected for testing purposes won't hurt anything. (Reconnect the
switch to the wiring harness after removal)
Click to expand...

THANKS Mike! That's exactly what I needed to know. The owner of the
shop I went to (recommended by my alignment guy) said his air
conditioning guy as experienced and said that this car didn't have
such a port. it reinforces some other things he said that supports my
opinion that he didn't know what he was doing. I think I'll buy the
big bottle of R134a and a manifold set and do it myself from now on!
It probably would have saved me money.

Thanks again!
__ __
Randy & \ \/ /alerie's
\__/olvo
'93 960 Estate
 
Randy G. said:
THANKS Mike! That's exactly what I needed to know. The owner of the
shop I went to (recommended by my alignment guy) said his air
conditioning guy as experienced and said that this car didn't have
such a port. it reinforces some other things he said that supports my
opinion that he didn't know what he was doing. I think I'll buy the
big bottle of R134a and a manifold set and do it myself from now on!
It probably would have saved me money.

Thanks again!
__ __
Randy & \ \/ /alerie's
\__/olvo
'93 960 Estate
Click to expand...

Keep in mind that under those switches are R12 type service fittings.
If you want to hook R134a equipment you'll need to temporarily add an
adapter. Also, these are on the high pressure side, you'll want to use
one of the fittings on the drier to add refrigerant. And the R134a
fittings are different (size) from low to high, make sure you don't try
to fill from a can to the high side! And doing some of this may be
illegal where you live.


--
Mike F.
Thornhill (near Toronto), Ont.

NOTE: new address!!
Replace tt with t (twice!) and remove parentheses to email me directly.
(But I check the newsgroup more often than this email address.)
 
Mike F said:
Keep in mind that under those switches are R12 type service fittings.
If you want to hook R134a equipment you'll need to temporarily add an
adapter. Also, these are on the high pressure side, you'll want to use
one of the fittings on the drier to add refrigerant. And the R134a
fittings are different (size) from low to high, make sure you don't try
to fill from a can to the high side! And doing some of this may be
illegal where you live.
Click to expand...

It is still legal to fill your own R134a in California. Costco
actually sells the large (3 gallon?) bottle of R134a. I do have one
fitting on the drier and have used it to add a little R134a
previously.

Thanks again.
__ __
Randy & \ \/ /alerie's
\__/olvo
'93 960 Estate
 
You must log in or register to reply here.
Back
Top