Air Conditioning Problem

OK GUYS! I NEED UR HELP. MY 95 SVX A/C IS ACTING UP..WHEN I GET IN THE CAR, START IT AND TURN ON THE A/C BY PRESSING THE AUTO BUTTON IT JUST SITS THERES AND DOES NOTHING THEN ALL OF THE SUDDEN IT'LL BLOW HARD AS HELL 4 2 SECONDS THEN GO BACK TO LOW SPEED THEN ALL OF THE SUDDEN IT'LL STARTING BLOWING FULL BLAST AGAIN. IT JUST KEEPS REPEATING THIS CYCLE. ALSO, DURING A/C OPERATION THE BLOWER WILL STAY ON BUT THE COMPRESSOR WILL JUST TURN OFF THEN ALL OF THE SUDDEN IT'LL KICK BACK ON AGAIN. NOW, I CAN MAKE THE BLOWER COME ON WHATEVER SPEED I CHOOSE BY PRESSING THE APPROPRIATE BLOWER SPEED BUTTON BUT THE COMPRESSOR WON'T COME ON UNTIL IT GETS READY WHICH CAN BE ANYWHERE FROM 15 SECONDS TO A COUPLE OF MINUTES. SOMEONE PLEASE HELP...I'M TIRED OF GOING FROM COOLING TO COMPLETE HEAT IN A MATTER OF SECONDS.

RECENT WORK DONE: A/C COMPRESSOR W/ DRIER. I ADDED THIS FOR INFORMATIONAL PURPOSES ONLY..IT WAS DOING THE SAME EXACT THING WITH THE OLD COMPRESSOR. NO, I DIDN'T CHANGE THE COMPRESSOR THINKING THAT WAS THE PROBLEM, IT WAS GETTING NOISY AND GOING OUT.

[lee]

have you tried the diagnostics? look in the attached file.

[Earthworm]

Wow, I haven't seen that pdf file before. I like it. I think I'm going to calibrate my temperature settings tomorrow. I think I'm 2 degrees too warm.

BTW, my AC is doing the same thing.

[Motorsport-SVX]

something wierd started on my 92 today..
AC was working fine, .....then outta the blue after
sitting parked, but idling for about 15 min in 105
degree heat the blower quit blowing.
My AC kicks on, All AC lights on the dash all lite
up fine just the BLOWER doesnt "blow" thru any of
the vents on ANY with any buttons pushed....
Checked all my fuses, not sure what else to try to be
looking for.......
any ideas ?

[svxistentialist]

Originally posted by Motorsport-SVX
something wierd started on my 92 today..
AC was working fine, .....then outta the blue after
sitting parked, but idling for about 15 min in 105
degree heat the blower quit blowing.
My AC kicks on, All AC lights on the dash all lite
up fine just the BLOWER doesnt "blow" thru any of
the vents on ANY with any buttons pushed....
Checked all my fuses, not sure what else to try to be
looking for.......
any ideas ?

Dayle

That's a hard one to call.

Go to the How-to locker above, locate and do the AC diagnostic.

Mine recently stopped blowing on Auto. It was low on gas. If the temp differentials are wrong, not enough gas, the thing is programmed to shut down to save the compressor. The gas contains the oil which lubes the compressor. So not enough gas equals not enough lube equals blown compressor, ergo it shuts off.

However, I could still get the fan to run manual on 1 or 11 or 111, so your problem may be different.

Do the diagnostic, it runs through all servos, doors, motors routines, and reports a code if something is amiss.

If no code, suspect low gas.

Joe

Originally posted by overdalimit
OK GUYS! I NEED UR HELP. MY 95 SVX A/C IS ACTING UP..WHEN I GET IN THE CAR, START IT AND TURN ON THE A/C BY PRESSING THE AUTO BUTTON IT JUST SITS THERES AND DOES NOTHING THEN ALL OF THE SUDDEN IT'LL BLOW HARD AS HELL 4 2 SECONDS THEN GO BACK TO LOW SPEED THEN ALL OF THE SUDDEN IT'LL STARTING BLOWING FULL BLAST AGAIN. IT JUST KEEPS REPEATING THIS CYCLE. ALSO, DURING A/C OPERATION THE BLOWER WILL STAY ON BUT THE COMPRESSOR WILL JUST TURN OFF THEN ALL OF THE SUDDEN IT'LL KICK BACK ON AGAIN. NOW, I CAN MAKE THE BLOWER COME ON WHATEVER SPEED I CHOOSE BY PRESSING THE APPROPRIATE BLOWER SPEED BUTTON BUT THE COMPRESSOR WON'T COME ON UNTIL IT GETS READY WHICH CAN BE ANYWHERE FROM 15 SECONDS TO A COUPLE OF MINUTES. SOMEONE PLEASE HELP...I'M TIRED OF GOING FROM COOLING TO COMPLETE HEAT IN A MATTER OF SECONDS.

RECENT WORK DONE: A/C COMPRESSOR W/ DRIER. I ADDED THIS FOR INFORMATIONAL PURPOSES ONLY..IT WAS DOING THE SAME EXACT THING WITH THE OLD COMPRESSOR. NO, I DIDN'T CHANGE THE COMPRESSOR THINKING THAT WAS THE PROBLEM, IT WAS GETTING NOISY AND GOING OUT.

Too low freon pressure maybe? (Borderline perhaps) What's the name of that switch or relay?

Randy ii

[svxistentialist]

Is it the trinary switch you mean Randy?

Joe

Sounds like it needs some gas, cutting out on low pressure switch. If it is a R134 system that is probably the cause! Just my 2 cent