AC not working

Hello -

Thanks for the info and getting back with me.

You can find out the liter of the engine by looking under the hood and it should be on a decal on the bottom of the hood, in front of the radiator etc.

Next, with the hood up, please make sure the AC/heater is off, fan and all and the engine is cool.

Locate the radiator cooling fan.

Next start the car and see if the radiator cooling fan is turning..... You don't want it to be. Then turn on the AC, high cool and then look at the radiator cooling fan... Is it spinning...

Please let me know.

Your compressor may be on the way out see temp/pressure chart low side is ok but high side is to low should be higher. See pressure charts you might try letting a little Freon out as it may have to much in system.

Hello -

Also, it looks like you may have some recalls on your vehicle. The dealer may fix these for free. Please contact the dealer service department, give them the VIN number of your car and have them check on these to see if they apply to you.

Hello -

To better assist you is this model a GLE, GXE or an SE... Also do you know the engine size in liter

Hello -

Okay. . .. . .thanks for the info. . .. . .. . .

The tires. . .. . .. . .. . .not sure where you are getting them but you might try looking at TireRack and they ship them to you then you just pay, say at Walmart to have them balanced and mounted. It may be cheaper so check it out.

http://www.tirerack.com/index.jsp

The AC. . ..wow. . .. . .. . .. . .. . ..I would say about $2000. . .. . .. . .. . .if all is bad. . ..the quote is below on what we figure.

It also depends on what is wrong. . ..the only way to find out for sure is if you have someone test it and they tell you. . .. . .. . ...if the compressor shelled. . ..then you can bet you need to pretty much replace it all. . .. . .. . .. . .. . .. . .

Also I have attached what the car should cost you. . .. . .. . .. . .. . .but condition is a big factor.

Okay. . ..my opinion without looking at the car. . .. . .. . .. . .. . ...

The car may last but with that many miles you will be having problems because it is time for things to be going. . ..it is normal. . .. . .. . .. . .

If I were you and with a 10month old. . ...I would shop around some more and see what else is out there.

Hello -

Tricky question....... Less miles are better unless someone is trying to unload a problem...

You appear to need a good dependable vehicle so you and the little one don't get stranded. Of course I purchased a vehicle - ran it on the machines did a good look over and 1000 miles later I was pulling the heads off.....

So..... You need to look around at a low mileage car and then do some research on it. Not sure what you can spend but places like CarMax or other places that can show you the history of the vehicle on a carfax.....

If you know the person and they took care of it then that is a good thing too.

Have someone that knows about vehicles go with you to look it over or take it to your dependable mechanic and have them check it over.

What are you driving now that determines to get a different car?

Hi isaac17,

Check with AC on and engine idling,

1. Compressor clutch is engaged?

2. Cooling fans working?

Are the condersor or air flow restricted?

If the compressor operates at low rpm but the cooling is inefficient, you need to check the pressure. A weak compressor would cause the problem.

Hello .. thanks for the donation .. much appreciated

Hope this helps .. let me know if you need any more information

Automatic A/C-heater system consists of electronically controlled components added to standard air conditioning system. Automatic A/C system is controlled by the auto amplifier. See Fig. 1
Fig. 1: A/C System Control Panel ID (Auto Amplifier)

Auto amplifier unit is a switch control panel and microcomputer assembly. It processes various sensor information and controls air mix door, fan speed, outlet door, intake door, A/C compressor clutch, memory function and water cock (heater control valve) solenoid.
NOTE:For A/C-heater components not covered in this article, refer to MANUAL A/C-HEATER SYSTEM article in the AIR CONDITIONING & HEAT Section.

OPERATION
Automatic A/C-heater system controls optimum airflow (fan speed), outlet air temperature and outlet air vents to maintain vehicle interior temperature at desired setting.
AIR MIX DOOR MOTOR
Air mix door motor is attached to heater unit. Auto amplifier commands air mix door motor to rotate a shaft to move air mix door to a set position/angle. Air mix door position/angle is monitored by Potentiometer Balance Resistor (PBR), located inside air mix door motor. Door position/angle is continuously being fed back to auto amplifier by PBR to allow auto amplifier to move door position/angle for desired temperature.
AMBIENT TEMPERATURE SENSOR
Ambient temperature sensor, located below hood latch, detects ambient (outside) temperature and converts this reading into a resistance value read by the auto amplifier. See Fig. 2 .
If auto amplifier detects an abrupt change, it gradually adjusts interior temperature (.6 °F per 100 seconds) until desired setting is reached. If vehicle stops in traffic after highway speeds, ambient temperature sensor detects high temperature from heat off radiator. To counteract this sudden temperature change, ambient temperature input process (inside auto amplifier) gradually adjusts interior temperature to prevent an unpleasant temperature changes.
ASPIRATOR
Aspirator, located on lower, front of heater unit, produces a vacuum from outlet air discharged from heater unit. This aspirator vacuum pulls air from driver's side area, through in-vehicle temperature sensor.
AUTO AMPLIFIER
A/C system control panel (auto amplifier), is a microcomputer that monitors and processes information from various sensors. Auto amplifier controls air mix door motor, mode door motor, intake door motor, fan motor and compressor clutch operation. Self-diagnostic functions are built into auto amplifier to check A/C system malfunctions. See Fig. 1 .
Auto amplifier detects sensor voltage differences by monitoring an internal, fixed resistor for each sensor. Each sensor is fed 5-volts through the fixed resistor by a constant voltage circuit within auto amplifier. Voltage is then applied to ground through sensor resistance. This resistance value is the input read by auto amplifier.
SELF-DIAGNOSTICS
NOTE:During all self-diagnostic functions, ensure fresh air vent on auto amplifier is in OFF position, unless otherwise indicated. Also see TROUBLE SHOOTING in this article.

SELF-DIAGNOSTIC INFORMATION PRELIMINARY INFORMATION
To properly diagnose this system, self-diagnostics should be performed in the following order:
Read ENTERING/EXITING SELF-DIAGNOSTICS.
Perform SELF-DIAGNOSIS STEPS 1-5.
Perform appropriate PRELIMINARY CHECK chart under TROUBLE SHOOTING CHARTS for symptom diagnosis. PRELIMINARY CHECK charts refer to proper DIAGNOSTIC PROCEDURE chart(s).
Perform DIAGNOSTIC PROCEDURE chart(s) under TROUBLE SHOOTING CHARTS.
ENTERING/EXITING SELF-DIAGNOSTICS
Start engine and immediately depress and hold OFF switch on auto amplifier for at least 5 seconds. DO NOT enter self-diagnostics without engine running.
Select self-diagnosis steps 1-5 by pressing temperature control switches. After selecting step 5, auxiliary mechanism test may be selected by pressing FAN switch. Auxiliary mechanism test checks temperature setting trimmer.
To cancel self-diagnostics, press AUTO switch or turn ignition to OFF position.
SELF-DIAGNOSIS STEP 1
Checks Light Emitting Diodes (LEDs) & Segments
Step 1 starts automatically when self-diagnostics are entered. All LEDs and fluorescent display tubes should illuminate. See Fig. 1 . If all LEDs and fluorescent display tubes DO NOT illuminate, repair or replace as necessary. If LEDs and fluorescent display tubes test okay, replace auto amplifier.
SELF-DIAGNOSIS STEP 2
Checks Sensors For Open/Short Circuits
Position vehicle to enable sunlight to shine on sunload sensor. Enter self-diagnosis step 2 by pressing UP temperature control switch on auto amplifier. Display will illuminate a 2. If all sensor circuits are okay and no trouble codes are present, display will change to Code 20. It takes auto amplifier about 4 seconds to check all sensor circuits.
If a sensor circuit is faulty, circuit code number will flash on display. Shorted circuit will have a flashing "--" in front of the number 2. Open circuit will NOT have a flashing "--". If, for example, 21 is displayed on auto amplifier by an illuminated 2 and a flashing 1, an open circuit is indicated.
If two sensor circuits are faulty, each circuit code number will blink twice. See SELF-DIAGNOSIS STEP 2 CODE EXPLANATIONS TABLE to determine what a code number means.
SELF-DIAGNOSIS STEP 2 CODE EXPLANATIONS
Code....Sensor
20.......No Trouble Codes
21.......Ambient Temperature Sensor
22.......In-Vehicle Temperature Sensor
24.......Intake Sensor
25.......Sunload Sensor
26.......Potentiometer Balance Resistor (PBR)

SELF-DIAGNOSIS STEP 5
Checks Temperature Detected By Sensors
To enter self-diagnosis step 5, press UP temperature control switch on auto amplifier. Display will illuminate a 5. When DEF switch is pressed once, display will show temperature detected by ambient temperature sensor.
Press DEF switch again, display will show temperature detected by in-vehicle sensor. Press DEF switch again (3rd time), display will show temperature detected by intake sensor.
Press DEF switch again (4th time), display will return to 5. If temperature shown on display is greatly different from actual temperature, inspect sensor circuit. If sensor circuit is okay, check sensor. See appropriate sensor under TESTING.
AUXILIARY MECHANISM SETTING
Temperature Setting Trimmer
Temperature setting trimmer compensates for small differences between temperature setting on display and actual temperature within a range of +/-6 °F (+/-3 °C).
With system in SELF-DIAGNOSIS STEP 5, press FAN switch. System is now in auxiliary mode to set trimmer. Each time UP or DOWN temperature control switch is pressed, temperature display changes in one (1 ) degree Fahrenheit increments.
NOTE:If battery is disconnected, temperature trimmer setting goes to 0 ° on both Fahrenheit and Celsius scale and will have to be reset.

Is the clutch coming on for the ac? What are the exact pressures?

Check for up and down commands from the master switch.

Roy

If its that low u have a leak.I would remove the switch and test that voltage is being sent to the motor. Try holding the window button to go down and bang on the door panel with your hand. If the window starts working the motor is bad.

You have probably over charged the system an a high pressure cut out switch may have shut down the system as a safety device, refregrant is added in a precise quantity, just adding what you think is no answer to these problems, if the system was low, there will be a leak that need rectifying, A/C servicing should only be done by a qualified tech, I would go see one and get the system checked over.