Why does my Jeep Cherokee air conditioner not work?

However, over years of use, many Jeep Cherokee air conditioning systems begin to work less effectively, making summer drives very hot and uncomfortable. Before repairing this problem, assess what is causing it by troubleshooting the system to see why the ice-cold air that was once blowing out of the air vents is now warm.

What should the AC read on a Jeep Cherokee?

They should read 29 to 30 lbs. on the low side and at least 150 on the high side (with the engine off). If they are lower and the compressor did not come on, then it is undercharged and needs Freon to make the low side switch come on and activate the compressor. Start the car and turn the AC on.

What to do if your Jeep Cherokee is not running?

Remove the glove compartment insert, operate the air conditioning and move the knob that controls the position of air and notice which motor is not moving the lever to operate the door and replace the motor. If the line is not cold, hook up the air conditioning gauges.

Where does the Freon go in a Jeep Cherokee?

From the dryer the Freon flows through an H-block, which is similar to an orifice tube in function, where it turns the liquid Freon into a fine spray or vapor. This vapor or spray moves through the evaporator and absorbs the heat within the cabin and returns to the compressor.

What are the problems with a Jeep 4.0?

The 4.0 can also develop clogged fuel injectors. Deposits build up on the injectors and disrupt the flow of fuel. That can cause rough idling, misfires, or engine “stumbling.” Many Jeepers swear by various fuel additives that clean the injectors as you run the engine.

Are there any problems with the Jeep Wrangler?

Exasperated owners may say “it’s a Jeep thing,” but the truth is, every car or truck you can think of has its own unique quirks and issues, and Jeeps are no exception. Jeeps like the Cherokee, Grand Cherokee, and Wrangler are known to run into certain problems time and again. Of course, I don’t want to discourage anyone from driving a Jeep.

What causes death wobble on a Jeep Grand Cherokee?

Death Wobble is probably the most infamous problem in the Jeep community. Owners of some of their top models like the Jeep Grand Cherokee have reported that at high speeds, especially after hitting a bump, the steering wheel may start the shake and vibrate violently, to the point that some drivers report that the Jeep becomes hard to handle.

What should the pressure be on the AC in a Jeep Cherokee?

Check to see if the compressor comes on when the switch is activated. If the compressor comes on, feel the larger of the two lines off the compressor. The large line is the low side for the low pressure (suction side) which returns the Freon to the compressor. It normally carries 30 to 60 lbs. of pressure. The line should be cold.

How do you turn on AC in Jeep Cherokee?

Start the car and turn the AC on. Open the low side only valve and allow the charge to build to 30 lbs. on the low side and 150 lbs. on the high side. Listen for the click in the low side switch to turn the compressor on. Shut the valve off if the compressor does not come on. Turn the engine off.

Why is my a / C CLUTCH not working on my Jeep?

I checked the fuse and relay in the PDC, jumped the low pressure switch, and confirmed 12-13 v. @ the compressor clutch. Is it safe to say the a/c clutch is my culprit? Should I try energizing it direct from the battery to confirm or…???? Any help or suggestions from the WJ Gurus here is greatly appreciated.

Why is the air conditioning not working on my Jeep Grand Cherokee?

What are common reasons my Jeep Grand Cherokee has air conditioning problems? While there are a variety of reasons your Jeep Grand Cherokee air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.

Are there any problems with the Jeep Cherokee?

Jeep Cherokee owners have reported 140 problems related to engine shut off without warning (under the engine and engine cooling category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Jeep Cherokee based on all problems reported for the Cherokee.

Why does my Jeep Cherokee engine shut off?

When driving and making a right or left turn, an error message pops up on the screen stating can not switch gears while in drive, then the engine shuts off, it has happened to me 6+ times in the last month, it has happened in the middle of a left turn in a busy intersection 3 times and almost caused an accident.

What to do if your Jeep Cherokee wont start?

Turn the engine off. Rotate the compressor clutch be hand to see if it is loose enough, and check the wire connector on the compressor. Start the engine and carefully check for voltage at the compressor. If there’s no voltage, check the fuses in the relay box under the hood and the relays.

What kind of blower motor does a 2004 Grand Cherokee have?

2004 grand Cherokee limited v8 4.7 here. blower motor (sensor) replaced last month (Not OEM part) due to A whisper of hot and cold air only. The cold and hot air is coming out now but not nearly enough like before to cool entire interior. Have to keep fan on high just to feel slightly comfortable in driver seat.

Is there a cabin filter in a Jeep Grand Cherokee?

No there isn’t they didn’t make cabin filter in jeeps from 1997 to 2009 or something like that so thats why i was spraying the AC evaporator coil because there was a lot of dirt and debris. One of the dumb moves or smart i guess on Chrysler so it breaks down quick and are forced to pay 2000 to get the AC and heater coils replaced.

What to do if you have no air in your Jeep?

There are 2 fix’s on YouTube. 1 is to cut into the box going thru the glove box and the other is taking the entire dash, council, stearing wheel and the entire HVAC box out and splitting it open to replace the doors. If you do that I recommend replacing the heating core and resister and maybe even the heater motor.

Why is there no air in my Jeep Grand Cherokee?

Found broken vacuum hose under battery platform going into reservoir, replaced that (my cruise control started working). Cleared check valve in vacuum line near firewall, got a bit of air blowing but still not enough. Finally after reading your idea here, pulled the blower motor to check direction of flow.

What causes the blower motor to go out on a jeep?

The resistor is the most common part that goes out. You can check the blower motor by running a separate power line to it, it should run full blast when you do this. 28 people found this helpful.

When do you need a compressor in a Jeep Cherokee?

If the compressor makes a lot of noise or the clutch will not engage properly, it also requires a compressor. If the high side is very high and the low side normal or low, the condenser is plugged up and needs to be replaced.

Why is my Jeep Grand Cherokee blowing hot air?

When the air conditioner in your 2003 Jeep Grand Cherokee starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system.

What kind of refrigerant does a Jeep Grand Cherokee use?

How do you add Freon to a Jeep Grand Cherokee?

How to add freon to your 2003 Jeep Grand Cherokee: hook up the can of refrigerant (likely r-134a) to the low pressure port. When your compressor kicks on, add freon to the correct pressure.

Can a Jeep Cherokee defrost with no vacuum?

The selector defaults to defrost with no vacuum. I would check the vacuum first. The selector defaults to defrost with no vacuum. Click to expand…

Why does air only come out of defrost vents?

It is likely your vac reservoir is cracked or disconnected. When I turn on the air in my jeep the AC/Heat only comes out of the defrost vents at the bottom of the windshield no matter where I set the directional control? I could very well be very wrong but I think it might be a vacuum problem?

Why does my Jeep Grand Cherokee make a clicking sound?

The most common symptom of faulty blend door actuator on Jeep Grand Cherokee is a slight clicking sound repeatedly coming from under the dashboard. The sound will be most prominent for a few seconds when you turn on the air conditioning or adjust the temperature. Sometimes changing the temperature can temporarily stop the sound.

When does the Jeep Grand Cherokee a / C switch to defrost?

When climbing a hill or under heavy acceleration wile AC is blowing it will switch to the defrost. We’ve had this Jeep a little over a year 1. AC would switch to defrost upon high acceleration then resume & return to vents. Two months ago it went to defrost & didnt resume to vent.

What kind of climate does a Jeep Laredo have?

2012 Jeep Grand Cherokee Laredo – AIR/HEAT dual climate issue! Help please!! | Jeep Garage – Jeep Forum 2012 Jeep Grand Cherokee Laredo – AIR/HEAT dual climate issue!

Why does air only come out of my Jeep Grand Cherokee?

Check the vacuum lines to the door controls. These lines are routed directly to the engine manifold and the door fails to the defrost position on loss of vacuum. Maybe a line has come loose or a leak has developed in the line. 23 people found this helpful.

Where is the air vent on a Jeep Grand Cherokee?

43 people found this helpful. there is a motor that controls the door its located on the driver side just above the floor vent this piece is 45 dollars at auto zone I suggest u take the silver rod off and move the white control up if that don’t work then u may professional help 25 people found this helpful.

Why is my Jeep Cherokee blowing hot air?

Video Description When the air conditioner in your 2000 Jeep Cherokee starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system.

What kind of refrigerant does a Jeep Cherokee use?

Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your Cherokee consists of a compressor that is belt-driven, an evaporator and freon.

What kind of a / C does a Jeep Cherokee have?

The A/C system in your Cherokee consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

Why does my 99 Jeep Grand Cherokee have no heat?

My 99 jeep grand cherokee has no heat, the air blows out but blows out cold air. It actually blows out whatever the temperature outside is. If it is hot outside I get hot air if it is cold I get cold air. Please help, no one can tell me what is wrong with it helpful? First feel the heater core hoses with the vehicle hot. They should be hot.

What are common reasons my Jeep Cherokee has air conditioning problems?

What are common reasons my Jeep Cherokee has air conditioning problems? While there are a variety of reasons your Jeep Cherokee air conditioning won’t work, the most common 3 are a refrigerant leak, an electrical climate control issue, or a problem with the air conditioning compressor.

Is the Jeep Sport heater hot or cold?

The heater in my 1999 Jeep Cherokee sport does not get hot. The fan works, but it seems the control switch from hot to cool is not funtioning. Air is at best slightly warm (outside above 45 deg) to cold (below 30 deg). Need to know how the flap in the box works, (electrical or vac.)

How to clean an idle air control valve Jeep Cherokee?

In this video I am removing, cleaning and re-installing the idle air control valve (IAC valve, IAC sensor) on my Jeep Cherokee. If you’re having rough idle or some stalling issues, a dirty or faulty IAC valve is one possible cause for this problem. Loading…

Why is the AC not working on the passanger side?

The passanger side will sometimes get no air, sometimes cold air when the heat is on and sometimes hot air when the a/c is on. Luckly I have not had this issue with my WK.

How to troubleshoot the air conditioning on a 2001 Jeep?

Turn on your Jeep’s engine and turn on the air conditioning. Let it idle and check to make sure that the electric fan in front of the air conditioning compressor is on. If it is not, then this could cause your air conditioning system to perform badly at idle.

Why is my Jeep Grand Cherokee not cold?

Most of the time, when your Grand Cherokee’s air isn’t blowing cold enough, it is going to be a lack of refrigerant causing the problem. We recommend having a professional recharge your A/C if it does end up being a coolant issue.

Can a Jeep Grand Cherokee have an air conditioner?

It is entirely possible for your Grand Cherokee’s heater to work just fine even when the air conditioner is not blowing cold at all. That’s why troubleshooting the air conditioner is totally different than troubleshooting the heater.

The passanger side will sometimes get no air, sometimes cold air when the heat is on and sometimes hot air when the a/c is on. Luckly I have not had this issue with my WK.

Why is air not blowing out of the dash vents?

A few different items can cause the air to not blow out of the dash vents. The most common are a blend door or a control switch.

Is the air conditioner blowing out of the vents?

The air conditioning in my cadillac doesn’t blow out of the vents on the dash. But it blows air out of the side vents on the doors. How do I use the self diagnostics feature on my air conditioner?

How to troubleshoot and repair vents low air flow?

Easy step by step guide one how to troubleshoot and repair vent low air flow, this article pertains to most vehicles. Step 1 – Most air control vents are equipped with a flow control door that is located at the vent outlet. This door is controlled by a thumb wheel that when activated will open and close the vent air flow door.

Why does the a / C quit blowing on my 1999 Jeep Grand Cherokee?

The A/C (and heater) quit blowing on my Dad’s 1999 Jeep Grand Cherokee a while back so I took a look at it. The fresh air/recirculate blend air door seems to have broken up in the air duct causing it to suck up against the blower intake and stop all the air flow.

What to do if your Jeep Grand Cherokee has no air?

Check if Air flows from the defrost vents below the windshield. If it does, and no matter what U do, then the vacuum hose on engine side is not fitted on the Vacuum pipe there. Just fit it back to fix the problem !

What to do if your Jeep Grand Cherokee doors are not working?

You will still be hearing the door actuator moving but the doors are not working. There are 2 fix’s on YouTube. 1 is to cut into the box going thru the glove box and the other is taking the entire dash, council, stearing wheel and the entire HVAC box out and splitting it open to replace the doors.

How do I stop no air from dashboard vents?

This door is controlled by a thumb wheel that when activated will open and close the vent air flow door. Work the thumb wheel from one side to the other while checking the airflow. The flow should stop and start again, if the thumb wheel does not make a difference the problem is somewhere else.

Why are my coolant fans not running when AC is turned on?

Coolant fans not running when ac is turned on. AC compressor clutch engage then it will disengage. System has freon in it. It was working find but now nothin7. My car has 234565 miles. My car has an automatic transmission.

How does a radiator fan work when the AC is on?

The electric radiator cooling fan assembly is controlled by a thermoswitch located in the side of the radiator. At higher coolant temperatures, the switch closes to start the cooling fans. Any time the coolant temperature rises to higher than normal levels, the fan will start and continue to run until coolant temperature returns to a normal range.

Why does my Jetta not have a cooling fan?

Simply the engine is not hot enough to turn on the cooling fan, its not hot enough outside, you are driving getting plenty of air flow through the grille to keep things cool without the assistance of the fan. Its possible that you have no problem at all. Was this answer helpful? I got a 2002 Jetta the cooling fans don’t turn on .

What should I do if my Jeep Cherokee cooling fan does not work?

Check for battery voltage at terminal 2 of fan relay connector (Fig. 43). Connect a jumper wire across the radiator temperature switch harness connector. If fan operates proceed to next step. If fan does not operate replace radiator temperature switch once the engine has cooled down.

How does the cooling system work on a Jeep Cherokee?

When coolant temperature is below 190*F (88*C) the switch is open preventing the relay from being grounded and the cooling fan from being energized. When the air-conditioning is used the engine ECU grounds the A/C relay coil allowing current to flow through it.

Why is my Jeep radiator not turning on?

The fan will turn on after the temperature reaches about half. Usually comes on when the car is standing still due to the small amount of air circulating through the radiator. Too many mods to list… No the AC will turn the radiator fan on to pull air across the condensor.

What to do if your Jeep Cherokee turns off while driving?

Try changing the throttle position sensor located on the throttle body. Pull throttle body off 4 bolts disconnect the 3 wires clean throttle body with throttle body spray or carb spray. Spray the other sensor clean to a shine. My jeep was doing same thing no more problems.

What kind of engine does a Jeep Cherokee have?

I have a 1994 jeep Cherokee sport 4wheel drive. I get up to 35mph and it cuts out spits and spudders and back fires. Iv changed fuel pump, fuel filter, alternator, spark plugs, crank sensors. Iv taken throttle body off and cleaned it and cleaned all sensors as well. Iv done just about everything and still can’t figure it out.

Is there a recall on the Jeep Cherokee?

October 27, 2015 , Auburn Hills, Mich. – FCA US LLC is voluntarily recalling an estimated 75,364 U.S.-market SUVs to inspect and replace, as required, their air-conditioning lines, as required. FCA US launched an investigation after the National Highway Traffic Safety Administration received two customer complaints involving smoke and fire.

What is the a / C system on a Jeep Grand Cherokee?

The A/C system in your Grand Cherokee consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

What’s the problem with my Jeep Grand Cherokee air conditioner?

Air Conditioner. Cold Air On Left Side, Hot/ Very Warm On Left. I Am Having A Problem With Fan. Fan Use To Start About 10 Seconds After I Stared The Car. Now It Is About One Minute. Then The Fan Shuts … read more Second opinion] Blower motor wont shut off….. ignition off, key removed, and controller head removed and unplugged.

Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant. The A/C system in your Grand Cherokee consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

When the air conditioner in your 2012 Jeep Grand Cherokee starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system.

Can a Jeep Grand Cherokee have hot air on both sides?

Yes, , reycled the system to relearn and still have hot air on The driver’s side and AC on the passenger side. Anyway, next step is to pay the dealer $50- $100 to reflash the climate circuit to make them pair up again.

When to see a pro about Jeep air conditioning?

TIP: If you own a Jeep older than 1992 models, it is often advisable to see a pro when you experience AC issues. This is because older cars use a refrigerant no longer available to the public. A properly functioning AC is essential especially for those summer time road trips or while on a desert tour.

Can you change the AC on a jeep GC?

I’ve changed them in the wife’s Jeep GC twice in a year (both sides)! Yes, u can change them yourself BUT they don’t always “sink” up, to make left and right sides do the same thing (heat/AC).

Can a Jeep Cherokee Drive without air conditioning?

Depending on what kind of climate you live in, driving a car without air conditioning can be almost impossible. However, over years of use, many Jeep Cherokee air conditioning systems begin to work less effectively, making summer drives very hot and uncomfortable.

How much does it cost to repair a Jeep Grand Cherokee AC?

Jeep Grand Cherokee Car AC Repair costs $240 on average. For an AC system to work, it needs a gas or liquid substance called refrigerant (R-12 in older cars, R-134a in 1995 and newer cars). Over time, refrigerant can leak from the AC system through seals. If the AC does not have enough refrigerant, it will not blow cold air.

What are the most common problems with Jeep air conditioning?

Here are some of the most common problems Jeep owners experience with their AC systems. Before we discuss some of the problems that you might experience firsthand with you Jeep AC , it is important to take note of leaks and how they affect your AC. Leaks are the number one issue with AC across the board.

What are the signs of a bad AC compressor relay?

When a relay is starting to fail, it may give weakened or intermittent power to the compressor, which will result in weakened or intermittent function of the AC. The AC may function fine in one instance, and then shut off, or deliver inconsistent performance in another. This may be a potential sign that the relay may be going out.

What are the signs that your AC is not working?

Common signs include inconsistent cooling, not hearing a click from the compressor turning on, and no cold air. 1. Inconsistent cooling 2. AC compressor is not turning on 3. No cold air Almost every single electrical system on a car is powered through some kind of switch or electrical relay, and the AC system and compressor are no exception.

What are the signs of a bad AC compressor?

Common signs include inconsistent cooling, not hearing a click from the compressor turning on, and no cold air. 1. Inconsistent cooling 2. AC compressor is not turning on

How can I tell if my AC compressor relay has failed?

Another symptom that the AC relay has potentially failed is that there will be no cold air at all from the AC. If the relay fails, the compressor will not operate and the AC system will be unable to produce any cold air at all. While there are several reasons as to why an AC may stop producing cold air, a failed relay can be one of the most common.

When did my GMC Sierra air conditioner stop working?

I had a 2001 GMC Sierra that did this when truck was less the one year old (summer of 2001 is when it was). The dealer had the truck in the shop idling for a long time and the A/C worked perfectly. I told them to take it for a ride and see. So the service manager in an effort to convince me nothing was wrong went for a ride with me driving.

What to do if your Jeep Cherokee has a leak?

When the air conditioner in your 2000 Jeep Cherokee starts blowing hot air, you likely have a freon leak. Recharging the freon in your AC system is an inexpensive and easy first step to restoring the cooling capacity of your A/C system. Most refrigerants include a leak sealer that will seal small leaks in addition to filling the R134a refrigerant.

The A/C system in your Cherokee consists of a compressor that is belt-driven, an evaporator and freon. If there is a problem with your compressor or evaporator, adding freon will not restore cooling.

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