why does the a/c on my car stop when accerolating


Asked by Aug 19, 2015 at 03:42 PM about the 2004 GMC Safari

Question type: Maintenance & Repair

2 Answers

Kelly Mayo

sounds like your loosing vacuum...if your not talking abouut the ac clutch...

1 out of 1 people think this is helpful.

If, when accelerating the airflow shifts from the dash vents to the defrost (windshield) vents you have a bad vacuum check valve. The check valve is in the vacuum line coming from the engine thru the firewall. You'll see it on the engine side of the firewall. Looks like this: HTH. -Jim

Your Answer

Add photo

Related Questions

  • 94 GMC Safari Acceleration Issues 5 answers

    Hi I need your help experts of Gmc's. I have a *94 gmc safari sl 4.3 v6 mini van. Only 71k + miles by the way ill sell it for 1,500 as is. It's having acceleration problems. Basically it all started...

    1994 GMC Safari


    Maintenance & Repair

  • If an engine in a 2002 Safari is replaced with a newer engine, does the computer have to be reprogrammed? 2 answers

    I have a 2002 Safari and had the motor replaced, but I don't know if the mechanic used another 2002 motor or used a newer one. The problem I'm having is that when I take off from a stop, I feel the...

    2002 GMC Safari 3 Dr SLE Passenger Van Extended


    Maintenance & Repair

  • Why does my '98 GMC Safari stall while I am accelerating? 2 answers

    My Safari stalls while I am accelerating. Then the power steering and brakes become very difficult to use.

    1998 GMC Safari 3 Dr SLE Passenger Van Extended



  • Acceleration difficulty 2 answers

    Bad or old gas was put in my truck and now I'm having problems accelerating have to turn it off at each stop if I get to next stop

    1992 GMC Sierra 1500


    Maintenance & Repair

  • acceleration 1 answer

    i have replaced trans shift cable in dealer workshop and after that i lost acceleration. dealer is saying that they havenot touched any thing related to acceleration but i am sure that acceleration is...

    2003 GMC Envoy 4 Dr SLT 4WD SUV


    Maintenance & Repair

Search GMC Safari Questions

GMC Safari Experts

#1 Deathjam4
Reputation 200
#2 dandyoun
Reputation 80
#2 FordNut
Reputation 80
View All

Related Models For Sale

Used Chevrolet Astro"
3 Great Deals out of 358 listings starting at $2,695
Used GMC Savana"
8 Great Deals out of 1,480 listings starting at $2,995
Used Chevrolet Astro Cargo Van"
192 listings starting at $2,850
Used Chevrolet Express"
146 Great Deals out of 6,491 listings starting at $2,495
Used GMC Sierra 1500"
1,032 Great Deals out of 55,964 listings starting at $2,400
Used GMC Safari Cargo"
43 listings starting at $4,287
Used GMC Savana Cargo"
64 Great Deals out of 4,631 listings starting at $3,499
Used Chevrolet Express Cargo"
75 Great Deals out of 12,339 listings starting at $2,495
Used GMC Yukon"
546 Great Deals out of 14,666 listings starting at $1,500
Used Honda Odyssey"
436 Great Deals out of 26,348 listings starting at $999
Used Toyota Sienna"
382 Great Deals out of 25,533 listings starting at $600
Used Ford E-Series Wagon"
57 Great Deals out of 1,986 listings starting at $2,500
Used Ford F-150"
3,173 Great Deals out of 215,805 listings starting at $1,000
Used Chevrolet Tahoe"
1,039 Great Deals out of 36,536 listings starting at $1,695
Used Dodge Ram Van"
189 listings starting at $3,999

Used Cars For Sale

2005 GMC Safari For Sale
6 listings starting at $3,995
2004 GMC Safari For Sale
7 listings starting at $6,985
2002 GMC Safari For Sale
11 listings starting at $4,995
2000 GMC Safari For Sale
27 listings starting at $1,600