Air conditioning performance

surfrico · **Posted:** Thu Sep 18, 2008 1:46 am

ups4 wrote:

I'm glad someone else has noticed this problem too.
My KK seems to suffer from the same problem.

It's always hot down here in South Florida so I almost always have the A/C on full blast. What seems to happen is that on a mad hot day, the compressor seems to cut in and out at various intervals. It may start out cold air, but after a while it will seem to shut off. The blower is blowing full blast, but tepid air is coming from the vents. Then a while later it will go back to cold air.

This is unacceptable cause the vehicle won't cool down. I know I'd heard a while back about some cars that the compressor will cut out under heavy acceleration to give more power to the engine. But I don't think this is the case here. Even at idle sometimes it will blow not so cold air. I think I'm taking it in to have it checked.

Doesn't seem to matter if it's on recirculate or not....totally random. I need my A/C to be cold all the time :x .

Paul

WHY NOT TRY TO TENT THE WINDOWS, IT WORKS GREAT KEEPING THE INTERIOR COOL.

E2 · **Posted:** Thu Sep 18, 2008 3:12 am

Yeah i noticed on my test drive when going up the grapevine, a large hill on the freeway, it cut out and when i was in low 4 going up a nice hill that it cut out. I should have thought something of this but yeah in low 4 up a hill it made sense..... I thought and still kind-of-does. Well the FREE fix from the bulletin did make it 5 degrees cooler over all and thats 5 degrees cooler for now!

ups4 · **Posted:** Thu Sep 18, 2008 9:38 pm

surfrico wrote:

WHY NOT TRY TO TENT THE WINDOWS, IT WORKS GREAT KEEPING THE INTERIOR COOL.

The windows have the darkest legal tint available.

It does help, but the problem is still there. The A/C cuts in and out randomly no matter what setting it's at.
I'm taking her in for my free oil change next week, and I'll have them do the TSB for the A/C at that time.

We'll see if it does any good.

Paul

Diggerfreek · **Posted:** Thu Sep 18, 2008 9:42 pm

i'm having mine done Saturday with another ebrake oh yeah it works now adjustment

ups4 · **Posted:** Thu Sep 18, 2008 10:08 pm

Diggerfreek wrote:

i'm having mine done Saturday with another ebrake oh yeah it works now adjustment

Let us know if it makes any difference, Digger.

It seems since my KK was born in April, I will get the ATC/MTC flash, and a recharge....whoo hoo :wink:

Paul

Diggerfreek · **Posted:** Thu Sep 18, 2008 10:21 pm

honestly, the ac is a secondary thought... the e brake is what makes me mad :evil:

and come to think of it, the jeep is 1 yo today

richd · **Posted:** Fri Sep 19, 2008 12:30 am

ups4 wrote:

Diggerfreek wrote:

i'm having mine done Saturday with another ebrake oh yeah it works now adjustment

Let us know if it makes any difference, Digger.

It seems since my KK was born in April, I will get the ATC/MTC flash, and a recharge....whoo hoo :wink:

Paul

I had this done on my wifes KK and can tell you the A/C works great after the TSB was done.I'm in hot AZ.

08Liberty · **Posted:** Fri Sep 19, 2008 11:13 am

I just had the flash done!! The dealership service department knew about it and told me before I had a chance to say that the air conditioner was not working correctly. What a big difference!! Very cold air now.... It took all of 15 minutes to do!! Thanx to Diggerfreek...

ups4 · **Posted:** Fri Sep 19, 2008 9:55 pm

Diggerfreek wrote:

honestly, the ac is a secondary thought... the e brake is what makes me mad :evil:

and come to think of it, the jeep is 1 yo today

Well...Happy Birthday to Digger's Jeep

.

BTW, I musta missed what's wrong with your ebrake. What's the deal with it?

Paul

Diggerfreek · **Posted:** Sat Sep 20, 2008 3:20 am

ups4 wrote:

Diggerfreek wrote:

honestly, the ac is a secondary thought... the e brake is what makes me mad :evil:

and come to think of it, the jeep is 1 yo today

Well...Happy Birthday to Digger's Jeep

.

BTW, I musta missed what's wrong with your ebrake. What's the deal with it?

Paul

Thanks!!!

any way, the ebrake will not hold the jeep in place on an incline. it has always been like this but has gotten worse over the year. I will let you know what the dealership did not find..lol

E2 · **Posted:** Sat Sep 20, 2008 2:04 pm

Okay its seems to be cooler, not COLD. But truly I have a digital thermometer in the a/c vent and tested it before and after. It is 48-58 now and was 53-63 before. Is that really much colder, NO. It should by no means get over 55 degrees at 100 degrees outside temp. They have to come up with a real fix. I like in california and it is the tail end of summer and is only getting up to 90. I go to laughlin, nv and there it is well over 100, mostly 115 and a few days it may reach 126. No a/c should ever get over 65 even in 115 degrees, my s-10 blazer would be 60 in 115, so our KK's should be 48 all the time. The only think was can do to help keep it from going up to 60 when stopped would be to add a electric fan behind the front grill. Now I have not looked into this for the KK. I might have to thou!! I'll keep u all posted. This is will help keep the temp down when really hot and also when not moving as it will keep the a/c radiator cooler.

Diggerfreek · **Posted:** Sat Sep 20, 2008 4:43 pm

does yours have a mechanical fan?

ups4 · **Posted:** Wed Sep 24, 2008 3:39 pm

Well, I took her in for oil change/tire rotation and added I wanted them to do the TSB on the A/C. When the service rep checked for any TSB's, he told me there weren't any :shock:

.

I guess I could print the TSB notice that Digger posted and bring it in to them....but I'm sure they would still deny that there is one.

Good thing this isn't a safety issue.

Paul

johnb · **Posted:** Wed Sep 24, 2008 3:50 pm

ups4 wrote:

Well, I took her in for oil change/tire rotation and added I wanted them to do the TSB on the A/C. When the service rep checked for any TSB's, he told me there weren't any :shock:

.

I guess I could print the TSB notice that Digger posted and bring it in to them....but I'm sure they would still deny that there is one.

Good thing this isn't a safety issue.

Paul

What's your DOM?

ups4 · **Posted:** Wed Sep 24, 2008 3:58 pm

johnb wrote:

What's your DOM?

April 08 according to the door sticker.

Paul

richd · **Posted:** Wed Sep 24, 2008 7:24 pm

ups4 wrote:

johnb wrote:

What's your DOM?

April 08 according to the door sticker.

Paul

The service bulletin number is 24-007-08.I checked the TSB,and any model built between Aug.26,'07 to July 2,'08 needs to have the A/C system recovery and recharge with 18oz of refrigerant is required.Your fall into this TSB.This what was done on my wifes KK,and it works great so far.Give this bulletin number to your service writer and they should know what to do.

ups4 · **Posted:** Wed Sep 24, 2008 9:47 pm

richd wrote:

The service bulletin number is 24-007-08.I checked the TSB,and any model built between Aug.26,'07 to July 2,'08 needs to have the A/C system recovery and recharge with 18oz of refrigerant is required.Your fall into this TSB.

Right...thanks Rich, but this much I knew for sure.

What's puzzling is, why didn't they have any record of the TSB from their data base. The service rep pulled up the report and showed me, quote "See, there's no recall for your Jeep." I said I knew there was no recall, but there is a TSB for the A/C. He then reiterated...nope nothing here.

I gave up at that point and said just do the oil change. No sense getting into a pissing match with him :roll:

Anyway I'm gonna talk to the GM at the dealership. We've been friends for 15 years. If anybody can make it happen, he can :wink:

.

Paul

richd · **Posted:** Wed Sep 24, 2008 10:03 pm

ups4 wrote:

richd wrote:

The service bulletin number is 24-007-08.I checked the TSB,and any model built between Aug.26,'07 to July 2,'08 needs to have the A/C system recovery and recharge with 18oz of refrigerant is required.Your fall into this TSB.

Right...thanks Rich, but this much I knew for sure.

What's puzzling is, why didn't they have any record of the TSB from their data base. The service rep pulled up the report and showed me, quote "See, there's no recall for your Jeep." I said I knew there was no recall, but there is a TSB for the A/C. He then reiterated...nope nothing here.

I gave up at that point and said just do the oil change. No sense getting into a pissing match with him :roll:

Anyway I'm gonna talk to the GM at the dealership. We've been friends for 15 years. If anybody can make it happen, he can :wink:

.

Paul

I don't know why they don't have that TSB,but many people on differant forums had this done with know problem.Thats why when I have a problem,I have the TSB number with me so they can't say it doesn't exist.The GM should give you action.If you have to go on his computer and show him this thread.Good Luck.

johnb · **Posted:** Thu Sep 25, 2008 10:04 am

I just had this done on mine yesterday... The air is cold as hell now!

As a totally unrelated aside - it was 28 degrees up at the house this morning.

Gimme Liberty · **Posted:** Thu Sep 25, 2008 1:13 pm

johnb wrote:

I just had this done on mine yesterday... The air is cold as hell now!

LOL - I always loved that completely contradictory expression!

johnb wrote:

As a totally unrelated aside - it was 28 degrees up at the house this morning.

Are you talking Fahrenheit or Celsius?

Air conditioning performance

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