96 CAMRY A/C PROBLEMS

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Old 23 Jun 2006, 08:18 pm   #1 (permalink)
bottledoctor
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Default 96 CAMRY A/C PROBLEMS

Purchased this auto w/134k back in Jan.. A/C
was a bit weak then but in past few weeks i've had a NEED for a/c.. I've
discovered there was
very little PRESSURE in the lines.. For the record, all my activities in
the below steps were done with engine turned off..

So, I began putting together what it takes to EVACUATE the system, and
check for leaks, before refilling with R134a.. I have a ROBINAIRE vacuum
pump that pulls a good 28 to 29 lbs. Rounded up an adaptor/coupler for the
low pressure side but learned that putting together a coupler for the HIGH
SIDE is another story all together. I have limited resources as respects
the detailed PROCEDURES to evacuate this system..

I did notice that in the procedures available to me that I should pull a
vacuum from both HIGH & LO
A/C ports at the same time.. That sounded feasible
BUT amongst all my mess I did not find a GOOD means to PROPERLY get a good
connection on that HI PRESSURE port.. Using my guage valves I hooked up
just the LO port to my vacuum pump, leaving the HI port with nothing (no
cap either) on it.. In just SECONDS I pulled a solid 28 lbs from the LO
port.. Turned my compressor off and the vacuum held for several minutes..

NOW, resources said the vacuum s/b pulled from BOTH ports or I would have
leakage from the high port.. At this point i'm seeing NO LEAKAGE. So, I
reached down and pushed down the CORE VALVE on the high side while my
VACUUM still showed the 28 lbs.. The 28 lb vacuum did not drop at all.
Now, is that telling me something or not??

My guess is that there is a TOYOTA TSR out there
that might help me here.. I don't feel comfortable putting R134 freon in
this unit at $9. a can UNTIL I know more of what to REALLY expect here..
So there it is guys.. Do help me clear up this muddy water situation AND
where is the best place to get the adapter for the HI port to STANDARD
guage hose.. Thanks again for any help you can provide... jim


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Old 26 Jun 2006, 09:39 pm   #2 (permalink)
bottledoctor
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Default Re: 96 CAMRY A/C PROBLEMS

Come on guys.. SOMEBODY must know something about my problem.. Gimmi a
phone number or
something.. I can call for free if you'd rather just talk about this..
thx, jim


Purchased this auto w/134k back in Jan.. A/C
was a bit weak then but in past few weeks i've had a NEED for a/c.. I've
discovered there was
very little PRESSURE in the lines.. For the record, all my activities in
the below steps were done with engine turned off..

So, I began putting together what it takes to EVACUATE the system, and
check for leaks, before refilling with R134a.. I have a ROBINAIRE vacuum
pump that pulls a good 28 to 29 lbs. Rounded up an adaptor/coupler for
the
low pressure side but learned that putting together a coupler for the
HIGH
SIDE is another story all together. I have limited resources as respects
the detailed PROCEDURES to evacuate this system..

I did notice that in the procedures available to me that I should pull a
vacuum from both HIGH & LO
A/C ports at the same time.. That sounded feasible
BUT amongst all my mess I did not find a GOOD means to PROPERLY get a
good
connection on that HI PRESSURE port.. Using my guage valves I hooked up
just the LO port to my vacuum pump, leaving the HI port with nothing (no
cap either) on it.. In just SECONDS I pulled a solid 28 lbs from the LO
port.. Turned my compressor off and the vacuum held for several minutes..

NOW, resources said the vacuum s/b pulled from BOTH ports or I would have
leakage from the high port.. At this point i'm seeing NO LEAKAGE. So, I
reached down and pushed down the CORE VALVE on the high side while my
VACUUM still showed the 28 lbs.. The 28 lb vacuum did not drop at all.
Now, is that telling me something or not??

My guess is that there is a TOYOTA TSR out there
that might help me here.. I don't feel comfortable putting R134 freon in
this unit at $9. a can UNTIL I know more of what to REALLY expect here..
So there it is guys.. Do help me clear up this muddy water situation AND
where is the best place to get the adapter for the HI port to STANDARD
guage hose.. Thanks again for any help you can provide... jim



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Old 27 Jun 2006, 04:00 pm   #3 (permalink)
davemac
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Default Re: 96 CAMRY A/C PROBLEMS

Get yourself a proper a/c manifold gauge set and stop dicking around.
This is an ok set:
http://www.harborfreight.com/cpi/cta...emnumber=92649

Evacuate the system thru the center hose by having both the low and
high side valves open. If the vacuum holds for 10 mins, then you are
good, otherwise re-vac again to pull out any remaining moisture. If
you can't get the vac to hold after 3 or 4 trys, then you have a leak.
You really should be pulling 30 inches in order to get the moisture
out. To recharge, charge into the low side only (ie turn off the high
side valve). Put the cans of freon in some warm water first to preheat
(not hot). Get a cheap postal scale (Ebay) and weigh your cans full
and then weigh them as you put them in. Keep the cans upright. Bleed
the air out of your charging hoses by cracking open the fitting on the
low side quik connect for a second if you can with the first can
attached to the center hose. When you have around 40-50psi of static
pressure in the system, start the engine and turn on the A/C to help
pull in the rest of the remaining charge. (required charge should be
on a sticker under the hood). After you are done, low side should be
around 30-35 psi, high side around 200-220psi or so. Make sure your
condensor fan is working.

dave mc

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