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Grand Am AC

Tiny
RICKS2002
  • MEMBER
  • 2002 PONTIAC GRAND AM
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 84,000 MILES
My 2002 grand am's AC turns on and off. Ck engine light came on AC wouldn't turn on then I shut down the car try again no light on and AC works
Sunday, August 21st, 2011 AT 9:11 PM

8 Replies

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Check engine light on
https://www.2carpros.com/articles/service-engine-soon-or-check-engine-light-on-or-flashing

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis,finding out what's going on.
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Sunday, August 21st, 2011 AT 9:13 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
First thing you need to do is go to a auto parts store and have them scan it for codes. Then let me know what the exact code numbers are. Also if the ac still works.
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Sunday, August 21st, 2011 AT 9:15 PM
Tiny
RICKS2002
  • MEMBER
  • 4 POSTS
What's weird no codes. The only time it seems that the AC doesn't work is if you leave it on turn off the car they turn the car back on sometimes the AC won't turn on however if you turn the AC off before turning off the car then turn on the car then the AC no issues.
Any thoughts
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Sunday, August 21st, 2011 AT 11:40 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Do you have auto climate control?Or is it manual?If your getting a check engine light with no codes then they probably used a basic code reader that only reads engine and transmission codes. Not body control module air bag hvac codes etc. So you probably have codes set in another computer.
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Monday, August 22nd, 2011 AT 1:45 AM
Tiny
RICKS2002
  • MEMBER
  • 4 POSTS
Manual auto climate
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Monday, August 22nd, 2011 AT 2:35 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
So you dial in the temp you want on the display?
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Monday, August 22nd, 2011 AT 2:39 AM
Tiny
RICKS2002
  • MEMBER
  • 4 POSTS
Its not digital just a dial with the red/blue and you move it to the temperature you want. No digital reading, the basic manual ac system
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Monday, August 22nd, 2011 AT 4:06 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,870 POSTS
Alright you threw me off when you said it was a manual auto climate control. When the ac shuts off while driving is the car running too hot or overheating?Are the electric fans working like they should?Also I would clean all the fins on the radiator and ac condensor of all the debris that might be trapped in them. After that will be checking the high and low ac pressures.
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Monday, August 22nd, 2011 AT 4:18 PM

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