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A/C blows, but not cold
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
you mean the ones from auto zone with the hose attached i use them for giving ac systems a little drink when they need it they work ok
Last edited by freegdr; Jun 12, 2011 at 03:53 PM.
CF Veteran
Joined: Mar 2010
Posts: 47,923
Likes: 38
From: Broward County Fl.
Year: 1989 xj sport 2dr
Model: Cherokee
Engine: 12 hole bosch Injectors
its pretty simple procedure it will only attach to the low pressure line cant really f it up just dont out to much in justy as bad as not enough i think theres even you tube vids
Last edited by freegdr; Jun 12, 2011 at 04:07 PM.
Senior Member
Joined: Jun 2010
Posts: 601
Likes: 0
From: Stafford Va
Year: 1998
Model: Cherokee
Engine: 4.0
Originally Posted by DocBoCook
yeah, those are what I am talking about. Are you saying they don't have enough product in them?
CF Veteran
Joined: Feb 2010
Posts: 12,367
Likes: 23
From: Oroville, CA
Year: 1995
Model: Grand Cherokee
Engine: 4.0 with all of the noise and clatter
If the A/C is not blowing cold, 9 times out of 10 the cause is a low refridgerant level due to a leak in the system. If the A/C is working and cooling as it should, you will never have to "recharge" it, refridgerant does not wear out. The only thing you can do to a working system is to check the condition of the belt and make sure the condensor isn't full of garbage.
Now to answer the original question, take it to a shop and have it checked out. An A/C system is not something a first timer should mess with, you can get hurt.
Now to answer the original question, take it to a shop and have it checked out. An A/C system is not something a first timer should mess with, you can get hurt.
He means freon. I've heard many people use the term coolant instead of freon because they think because cool air comes out then that is what it is called. But guys please don't try to add coolant to your system! haha

Guages guages gauges! Find out if you are low on freon 1st before adding to the system. If the compressor won't engage, jump it for about 10 seconds and see what the pressures are. If the low side goes down to 0, you have no charge or a blockage. You can go buy the $32 charge and oil kit, but you'll be buying it again if you have a leak. And again and again until the leak is fixed. If the system is empty from a leak, it needs to be repaired, evacuated and then charged to work proplerly. Yes, you will hear guys say, "oh, I just charged it and never had a problem" That's BS. They'll kill the compressor in time. Without putting the system on a vacuum first and removing any air and moisture from the system, they will slowly damage the compressor especially because you will run higher discharge pressures. Do it right the 1st time and you will save yourself money, time and lots of aggrivation.
CF Veteran
Joined: Jun 2010
Posts: 2,117
Likes: 3
From: Ohio
Year: 1998
Model: Cherokee
Engine: 4.0 stock
The cans of R134A you buy at the auto parts store are a bandaid. Without actual gauges that measure low side and high side pressures it is very difficult => impossible to diagnose an A/C system.
In order to successfully repair an A/C system you need the parts, tools and knowledge. All of which you can acquire. For the knowledge... You must understand how the system works. Check out this link to get a basic understanding...
http://www.familycar.com/ac1.htm
Depending on what is wrong with your system it will be much cheaper to repair yourself... If you are lucky all you will need is some O rings or maybe to fix a leaking connection to the compressor.... If you need to start replace parts it can get pricey... At the very least you will need refrigerant, a set of gauges and a vacuum pump. Keep in mind even if you tackle it yourself you will need a shop to evacuate your refrigerant before you work on the system... Even though R134A is "environmentally friendlier" to the atmosphere it is illegal to just vent it...
In order to successfully repair an A/C system you need the parts, tools and knowledge. All of which you can acquire. For the knowledge... You must understand how the system works. Check out this link to get a basic understanding...
http://www.familycar.com/ac1.htm
Depending on what is wrong with your system it will be much cheaper to repair yourself... If you are lucky all you will need is some O rings or maybe to fix a leaking connection to the compressor.... If you need to start replace parts it can get pricey... At the very least you will need refrigerant, a set of gauges and a vacuum pump. Keep in mind even if you tackle it yourself you will need a shop to evacuate your refrigerant before you work on the system... Even though R134A is "environmentally friendlier" to the atmosphere it is illegal to just vent it...
Member
Joined: Jun 2011
Posts: 120
Likes: 1
From: Indianapolis
Year: 1996
Model: Cherokee
Engine: Inline 6 4.0 H.O.
So I got a gauge and it says it's over full. So, is it possible it won't blow due to overfill, is there a way to fix this? What is the Magnet fix to check the compressor?




