a/c question

disturbdgt

Member

Apr 8, 2007

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7

suffolk, va

Jul 18, 2009

#1

• Jul 18, 2009

• #1

ok so my a/c stopped working and ive checked the freon level and pressure and its all good. so does this mean that my compressor might be shot? Cause my compressor is not even kicking on.

 

1987stangman

Member

Jul 12, 2006

684

24

19

Jul 18, 2009

#2

• Jul 18, 2009

• #2

disturbdgt said:

ok so my a/c stopped working and ive checked the freon level and pressure and its all good. so does this mean that my compressor might be shot? Cause my compressor is not even kicking on.

Click to expand...

Check the low side pressure switch.. If I remember right there is also a pressue switch on the high pressure hose too, but the low pressure switch is common to go out, I just had to replace mine about a month ago.

 

joshjwc9

Active Member

Jun 12, 2006

1,095

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39

Palm Harbor, FL

Jul 18, 2009

#3

• Jul 18, 2009

• #3

^+1 or it may be the AC Clutch going out too. I had my stock clutch chirp and shoot sparks shortly after I picked up my Mustang from my Brother in Law.

 

disturbdgt

Member

Apr 8, 2007

90

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7

suffolk, va

Jul 18, 2009

#4

• Jul 18, 2009

• #4

well i just replaced my ac cylce pressure switch and still no go. so what else could be my problem?

 

disturbdgt

Member

Apr 8, 2007

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suffolk, va

Jul 19, 2009

#5

• Jul 19, 2009

• #5

any ideas to what may be causing this problem?

 

S

shoobs99svt

Member

Jul 31, 2006

90

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6

Charlotte NC

Jul 21, 2009

#6

• Jul 21, 2009

• #6

disturbdgt said:

well i just replaced my ac cylce pressure switch and still no go. so what else could be my problem?

Click to expand...

I ran into this a few summers ago... But just so we're comparing apples to apples here, youre talking about the "low pressure switch," the one that comes right off the top of the dryer? If so, did you try to jump the switch while it was off (paperclip worked for me) to get the clutch to engage momentarily? That should help narrow things down if it spins.

Heres my thread seemed to help a bunch a others with similiar problem. Also from what ive read and understand 2v and 4v are really similiar/identical.
http://forums.stangnet.com/711661-ac-not-so-ac-any-more-recharge.html

 

Mike97gt

it doe snot

Founding Member

Jan 26, 1999

10,633

7

89

the people's republic of massachusetts

Jul 21, 2009

#7

• Jul 21, 2009

• #7

Try jumping the two pins on the low side switch like the above post said.. If it still does not engage then you have a failure on the electrical side of the system.

Most common causes are the a/c clutch itself and the CCRM

 

V

vader88

New Member

Jul 20, 2009

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Jul 21, 2009

#8

• Jul 21, 2009

• #8

if your car comes with a electric fan, make sure both speeds are working. When high speed stopped working on mine, a 4.6 tbird it stopped the compressor from working also. Replaced it and it started working. Although jumping the switch might bypass this but I'm not sure.

 

disturbdgt

Member

Apr 8, 2007

90

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7

suffolk, va

Jul 21, 2009

#9

• Jul 21, 2009

• #9

yeah i've tried jumping it, and ive even replaced it and still no go. so i think my next step it to test the ccrm. but before i do that is there a way i can power the compressor to see if it still works or engages?

 

O

omar2000

New Member

Sep 21, 2010

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0

Sep 21, 2010

#10

• Sep 21, 2010

• #10

Quote:
Originally Posted by disturbdgt
ok so my a/c stopped working and ive checked the freon level and pressure and its all good. so does this mean that my compressor might be shot? Cause my compressor is not even kicking on.

Check the low side pressure switch.. If I remember right there is also a pressue switch on the high pressure hose too, but the low pressure switch is common to go out, I just had to replace mine about a month ago.

Click to expand...

Mine was a damaged low pressure switch, so i needed to replace it. I got the 4-Seasons A/C Low Pressure Switch. Since then, my A/C is working well.

 

wmburns

SN Certified Technician

Aug 14, 2009

5,892

514

204

Houston Texas

Sep 21, 2010

#11

• Sep 21, 2010

• #11

Start by confirming the following fuses. F1.24, F2.23, F2.24, F2.2.

F1=Battery Junction Box (BJB) located in the engine bay
F2=Central Junction Box (CJB) located in the driver's kick panel.

It is possible to jump the AC clutch. Disconnect the AC clutch connector. Force +12 volts and -12 volts towards the AC clutch. Confirm if you hear the clutch engage.

Confirm that the engine cooling fan works.

Confirm the the passenger compartment fan works.

The CCRM will require many more detailed tests. Do you have a volt-ohm meter? Are you prepared to use it?

 

nancygrl

Member

Nov 25, 2009

257

4

18

Sep 22, 2010

#12

• Sep 22, 2010

• #12

Well, I had a similar issue on my 99 GT. The tabs on the cable connector that plugs into the compressor were broke and the cable was just hanging. Don't know if that the case here, but worth a quick look.