air conditioning stops working going up a hill but returns well going down hill...recharge it???

Asked by Oct 15, 2008 at 04:12 PM about the 2001 Jeep Grand Cherokee

Question type: Maintenance & Repair

Does my air conditioning need recharged? It works well until its put on a pull like going up a hill but returns to normal going straight or back down hill...Firestone is recommending a pressure test of over $200.00 and I don't want to pay out that much money if it just needs recharged. Can you help me? Thanks, Tammy

6 Answers

515

they could be right. i dont know why it would need to be recharged if it still works. it would need a recharge if it wasnt very cold any more. (like if it feels that luke warm temp) could be a bad hose. is your cruise set by chance when goin up hills when this occurs?

2 out of 2 people think this is helpful.
7,515

Doesn't sound like it... and a pressure check shouldn't cost $200, find a new shop, they are bending you over their cash register. When you are on level ground does it blow as cold as it normally would? Does it stay cool at idle(it should get a bit warmer but is it how it normally is?) It loosing cooling while going up hill is kinda odd. Normally that requires a down shift= higher RPMs. It's almost as if the AC clutch is slipping for some reason. Anyone, had a similar issue they can relate to?

1 out of 1 people think this is helpful.
25

Ok here is what it sounds like to me. You either have A) Loose connection on a vacuum hose or B) A pinhole leak in a vacuum hose. I have seen a similar issue multiple times and that is what it sounds like with the fact that you are going up hill when this happens but first when you say it stops working you mean it doesnt blow cold correct?

1 out of 1 people think this is helpful.
9,395

I had a van that did the exact same thing. The A/C high pressure switch (also called the A/C cutoff switch) was my problem. The system being overcharged would do the same thing. The high pressure switch is cutting the a/c out because it thinks there is a problem or because there is a problem. I would have a system pressure check (about $65 at any Midas) and if all is ok then it is your high pressure switch.

4 out of 4 people think this is helpful.
110

I have a 99 GC that had a somewhat simular problem. It was found that the vacuum check valve that prevents the AC controls from changing when the engine vacuum drops due to engine operation. The load on the engine as it pulls the hill will cause the vacuum to drop. This check is located on the passenger side of the engine compartment on the fire wall by the AC unit. Under warranty, the mechanic installed a new check valve and placed another check valve in series with the first to prevent the vacuum from bleeding off as the engine was placed under load. Kind of long, but may fix your problem. Mind has been working fine for about 50K miles since.

5 out of 5 people think this is helpful.
30

Avoid that garage like they have a social disease. Forever! If they tried it once they will try it again. Thank god you got away without incurring any loss. Pass the word around. Places like that don't belong in business. It's a check valve or vacuum hose leak. Happens frequently.

3 out of 3 people think this is helpful.

Your Answer

Add photo

Related Questions

  • Battery drains when jeep is not started for a few days and have to recharge battery 35 answers

    If I do not drive my Jeep every day the battery drains and has to be recharged. In the process of changing the alternator and would like to know if anyone else has had this problem and if there is a ...

    1995 Jeep Grand Cherokee SE

    -

    Maintenance & Repair

  • Overheating issue 17 answers

    Last summer, my jeep overheated. A friend of mine said it was probably the sensor, since the fan would work when he tested it, so he ghetto rigged the fan to a fuse inside the car. The connection was ...

    2003 Jeep Grand Cherokee Laredo 4WD

    -

    Maintenance & Repair

  • 1995 jeep grand cherokee with finicky overdrive 2 answers

    I have a 1995 jeep grand cherokee 8 cylinder that intermittantly won't shift into overdrive. When this symptom occurs it will continue to "not shift into overdrive" until the jeep is shut down and re...

    1995 Jeep Grand Cherokee SE 4WD

    -

    Maintenance & Repair

  • AC not working 8 answers

    After refrigerant was recharged, the AC of my Grand Cherokee (2002) stopped working. The clutch engaged from time to time but for less than 1 minute, then it disconects again. Could you help me tryi...

    2002 Jeep Grand Cherokee Limited 4WD

    -

    Maintenance & Repair

  • air conditioning 10 answers

    Blows cold when cold outside,but hot when hot outside.

    2002 Jeep Liberty Sport 4WD

    -

    Maintenance & Repair

Grand Cherokee

Looking for a Used Grand Cherokee in your area?

CarGurus has 69,508 nationwide Grand Cherokee listings starting at $1,500.

ZIP:

Search Jeep Grand Cherokee Questions

Jeep Grand Cherokee Experts

#1 inuevafreak
inuevafreak
Reputation 1,850
#2 Tom Demyan
Tom Demyan
Reputation 1,630
#3 thejeepdoctor
thejeepdoctor
Reputation 1,480
View All

Related Models For Sale

Used Jeep Cherokee
325 Great Deals out of 53,041 listings starting at $2,495
Used Ford Explorer
1,431 Great Deals out of 71,885 listings starting at $985
Used Jeep Wrangler
518 Great Deals out of 16,997 listings starting at $2,990
Used Toyota 4Runner
381 Great Deals out of 20,139 listings starting at $2,499
Used Chevrolet Tahoe
1,068 Great Deals out of 32,278 listings starting at $1,495
Used Dodge Durango
456 Great Deals out of 23,002 listings starting at $1,200
Used Ford F-150
3,396 Great Deals out of 203,564 listings starting at $1,273
Used Chevrolet Silverado 1500
2,625 Great Deals out of 148,536 listings starting at $1,800
Used BMW X5
569 Great Deals out of 16,652 listings starting at $2,788
Used Jeep Liberty
373 Great Deals out of 8,315 listings starting at $900
Used Chevrolet Camaro
646 Great Deals out of 39,146 listings starting at $2,995
Used Ford Mustang
692 Great Deals out of 38,144 listings starting at $1,750

Used Cars For Sale

2017 Jeep Grand Cherokee For Sale
31,880 listings starting at $23,900
2016 Jeep Grand Cherokee For Sale
37 Great Deals out of 10,559 listings starting at $21,975
2015 Jeep Grand Cherokee For Sale
207 Great Deals out of 5,134 listings starting at $18,991
2014 Jeep Grand Cherokee For Sale
256 Great Deals out of 5,898 listings starting at $12,995
2013 Jeep Grand Cherokee For Sale
73 Great Deals out of 1,719 listings starting at $13,582