ac clutch not engaging

Asked by Jul 11, 2016 at 10:19 AM about the 2004 Pontiac Grand Prix GT1

Question type: Maintenance & Repair

My ac blows hot air. Clutch not engaging. Tried
adding a can of refrigerant, cooled off a little but
the clutch still did not engage

1 Answer

35,985

Those cans of refrigerant only provide 1 pound of 134a, you may have needed more. Now you're faced with a dilemma - buy another can of refrigerant and find out the AC still won't work, or take it to a shop and let them diagnose the AC first. Most shops (at least in my area) charge a fee of about $70 to diagnose and add up to 2 pounds of r134a. Same as it would cost you to buy 2 cans of AC-Pro but with the added insurance of making sure the system doesn't have a leak before wasting that money. Secondly, is the AC blowing HOT air, or is it just blowing AMBIENT air from the vents? This is an important distinction, because HOT air implies a problem with the temperature blend door. If the blend door is open to the heater core, you will get hot air no matter how well the AC system is working. I had a problem similar to yours once, blowing HOT air (bad blend door) and clutch not engaging on compressor (needed over 2 pounds of refrigerant). Luckily in my case there were no leaks. You've already committed to one can, you may as well try one more can, and if the clutch still wont engage, time to take it to a shop.

1 people found this helpful.

Your Answer:

Pontiac Grand Prix Experts

  • #1
    Js08016
    Reputation
    4,710
  • #2
    Tom Demyan
    Reputation
    3,290
  • #3
    munron
    Reputation
    2,830
View All

Related Models For Sale

Used Chevrolet Impala
384 Great Deals out of 25,757 listings starting at $950
Used Pontiac Bonneville
328 listings starting at $1,900
Used Chevrolet Monte Carlo
4 Great Deals out of 941 listings starting at $2,950
Used Pontiac Grand Am
725 listings starting at $1,900
Used Pontiac GTO
3 Great Deals out of 380 listings starting at $7,900
Used Ford Mustang
260 Great Deals out of 37,873 listings starting at $1,350
Used Pontiac G6
33 Great Deals out of 2,794 listings starting at $699
Used Chevrolet Malibu
489 Great Deals out of 51,744 listings starting at $1,995
Used Buick Regal
91 Great Deals out of 3,929 listings starting at $5,300
Used Nissan Altima
745 Great Deals out of 66,933 listings starting at $1,625

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.