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AC system/relay

Tiny
FIXITMR
  • MECHANIC
  • 1995 PONTIAC TRANSPORT
  • 3.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 225,000 MILES
AC not working bought van that way it seems all there. I was gonna jumper relay to fill with freon. Chiltons online says could be dual air? How do I tell? Has dual heat. Chiltons no help on finding relay my fender relays last 1 on right is GREEN has 4 wires main red and green small brown and green.
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Monday, March 28th, 2016 AT 2:10 PM

16 Replies

Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
The relay rack is as follows its near pass fendero header. From fender relay 1 2 3 are gry 4 is blck 5 is green.
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Monday, March 28th, 2016 AT 2:41 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Hint if compressor won't start it may be out of Freon, if that is case then there is a leak and should be fixed. See pic ac compressor relay behind right headlight
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Monday, March 28th, 2016 AT 3:14 PM
Tiny
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It may have a slow leak which is seasonal that is quite common. If not recharged eventually to low for compressor to start. Your pic is nonspecific as to which relay is compressor
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Monday, March 28th, 2016 AT 3:28 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Funny I said behind right headlight. Plus gave you a pic
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Monday, March 28th, 2016 AT 4:28 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
  • 47,526 POSTS
It looks like it #5 in the description. Can you double check the year, does not show a transport for this year.
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Monday, April 4th, 2016 AT 2:14 PM
Tiny
FIXITMR
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Pretty sure transport went to 96 I know its a 95 it an odd/special yr for the diagnosis system OB
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Thursday, April 7th, 2016 AT 3:03 PM
Tiny
FIXITMR
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My latest news is its #2 from fender but still dont have wiring diagram and all the wires on #2 are the same size.
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Thursday, April 7th, 2016 AT 3:05 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Unplug relay if you are going to jump it there. Also pic of pressure switch.
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Thursday, April 7th, 2016 AT 4:23 PM
Tiny
FIXITMR
  • MECHANIC
  • 9,990 POSTS
Been so cold here i've had no interest in working on it may be a week or longer
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Thursday, April 7th, 2016 AT 5:05 PM
Tiny
KEN L
  • MASTER CERTIFIED MECHANIC
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Please let us know what you find when it warms up
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Sunday, April 10th, 2016 AT 1:47 PM
Tiny
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O which wires am I jumping? Pink to green?
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Wednesday, April 13th, 2016 AT 10:17 AM
Tiny
KEN L
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You will jump the pink to the green
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Wednesday, April 13th, 2016 AT 11:25 AM
Tiny
FIXITMR
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Yup that makes the compressor run gonna try to test for leaks before attempting to charge its completely empty as far as I can tell.
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Wednesday, April 13th, 2016 AT 5:28 PM
Tiny
KEN L
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Okay let us know how it goes
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Wednesday, April 13th, 2016 AT 6:28 PM
Tiny
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So I added freon and it lasted the summer! Now its hot again this yr and AC not working again! So i'm here to see what I did last time!
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Friday, June 2nd, 2017 AT 2:52 PM
Tiny
FIXITMR
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Same deal jumpered relay plug added freon working again
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Saturday, June 3rd, 2017 AT 7:21 PM

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