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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

A/C problem....

  • Thread starter Thread starter SilverBullet00
  • Start date Start date Sep 20, 2006
S

SilverBullet00

New Member
Jul 5, 2004
1,150
0
0
Wichita, KS
Sep 20, 2006
#1
  • Sep 20, 2006
  • #1
My car hates me. I will save the long story and give you what I know....

1/ when I turn the A/C on (always on MAX) the car idles all over the place and surges up and down. When it surges up the A/C kicks on and pressure drops to around 25.... when the idle starts to come down the A/C compressor kicks off and the pressure goes up to 40-45.

2/ when I disconnect the A/C cycle swith and use a paper clip as a jumper, the A/C blows cold and idles at 1200rpm. When I rev the motor the triangular piece on the a/c clutch starts vibrating and making a horrible sound.

Is my compressor going out on me? I have replaced the cycle switch in the past, but I dont remember how I knew I had to replace it.
 

Mike97gt

it doe snot
Founding Member
Jan 26, 1999
10,633
7
89
the people's republic of massachusetts
Sep 20, 2006
#2
  • Sep 20, 2006
  • #2
the A/c is supposed to cycle on and off it should kick on around 45-50 psi on the low side and kick off at 25 psi.. the rough idle sounds more like a tuning issue or driveablity problem.

as far as the paper clip thing you really are not suposed to do that to your a/c compressor you can cause many many issues doing that for long periods of time.
 
S

SilverBullet00

New Member
Jul 5, 2004
1,150
0
0
Wichita, KS
Sep 20, 2006
#3
  • Sep 20, 2006
  • #3
alright, just trying to work all the gremlins out before the tune.. Thanks mike!
 

Mike97gt

it doe snot
Founding Member
Jan 26, 1999
10,633
7
89
the people's republic of massachusetts
Sep 21, 2006
#4
  • Sep 21, 2006
  • #4
SilverBullet00 said:
alright, just trying to work all the gremlins out before the tune.. Thanks mike!
Click to expand...

No problem. you sure are having a lot of issues with this tune.
 

MainstreamStang

New Member
Apr 29, 2003
140
0
0
Long Island
Sep 21, 2006
#5
  • Sep 21, 2006
  • #5
Hey, I am having this issue with my 2000 GT also, havent done any types of tests yet, any idea?

1/ when I turn the A/C on (always on MAX) the car idles all over the place and surges up and down.
 
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