Question about 1988 Cadillac Sedan DeVille

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'88 Camry AC buttons not working

I have an '88 Camry and the two lower settings for the AC doesn't work. The AC has 4 settings (Lo, 2, 3 and Hi) with buttons corresponding to each setting. When you push the button for either of the lower two settings (lo/2), the light turns on, but there's no air that blows. When you set the AC to the two higher settings (3/hi), there's air blowing out. I've tested all the fuses and pulled out the AC controller, but I can't seem to figure out what's wrong.

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Fan speed controler could be bad, fan motor rellay could be bad.

Posted on May 19, 2009


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1999 chevy blazer 4x4 The 4 wheel drive dash switch is brand new. When in 2 wheel drive none of the buttons light up. When I push 4 hi the 4 hi and 4 lo button lights light up and seems to be in 4 hi. When...

It could be a junk switch or it could be bad contacts inside the transfer case motor.. Does the transfer case switch to the selected gears? Everytime? If so, you might try another switch. If it does the same, I would say the motor contacts are bad. Replace the motor if you want the lights, But I personally wouldn't do it until the motor quit switching gears. They're not cheap.

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To check the computer for CODES:
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2. Simultaneously push and hold the OFF and WARMER buttons on the climate control panel for 3 seconds and release them
3. See if you get codes such as AC1347 or AC1348 or some other LETTER/NUMBER combination display on the fuel data display along with HISTORY or CURRENT with each code or codes that display...
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Try addind about 1/2 can of freon to the system and see if the compressor engages. If not, you will need to perform some diagnostic tests on the above codes. I can e-mail you the pictures and directives on how to fix the codes, But first you need to clear (ERASE) the codes from the computer and see which codes return as current or history codes which should display just after each code.

4. After the code or codes display you will see PCM?
5. Turn ignition OFF.

To clear the codes:
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3. Push and release the LO button and you will see ACM?.
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7. Turn OFF ignition key and wait 2 minutes and re-enter diagnostics like I told you in the previous e-mail and let me know what codes appear and if they are CURRENT or HISTORY.

Hope helped.

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Your ECO HEAT/COOL mode won't function if your temperature control is set at 'LO" or 'HI" or if the air flow is in the "floor/windshield mode" or "windshield mode".

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Hi my name is Juan and I do own a trailblazer with the same year 2002 and I read the problem you have let me try to help you Have you try to shift to 4hi with your transmission in neutral ? the transmission needs to be in neutral in order to shift the transfer case to 4hi and the vehicle needs to be completely stooped also is your service 4wd light on?? if the light is on your transfer case needs service and it can be as simple as the switch inside your car or a solenoid that has not been detected by the computer

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Reset the computer by disconnecting the battery. This should solve this. nutetral is for the four lo only to engage.


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