A/C and Fan problems - Miata Forumz - Mazda Miata Chat Forums
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NA (1989-1997) NA Miata discussion within. The MX5's first generation, the NA, sold over 400,000 units from 1989 to 1997.

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Old 04-11-2012, 06:44 AM   #1
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Default A/C and Fan problems

When I push in my A/C button it lights up, neither fans come on, compressor doesn't come on, blower motor comes on. Ok, so far I checked the fuses and relay in the engine compartment. Jumped the TFA and GND in the diagnostic box, condenser fan didn't come on, which from what I read should have. Where should I go from here?

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Mark

96 Miata
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Old 04-11-2012, 08:31 AM   #2
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Did it work before or is this a new to you car?
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Old 04-11-2012, 09:29 AM   #3
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you have to reset the tripper on the breaker fuse.

in the middle of the in-cabin fuse panel, there's a large black "breaker" with a red dot on it; press it.


EDIT: oh wait, blower comes on, but no fans/compressor? well could be too low of freon in the system, bad a/c relay, blown wiper fuse, or a bad thermoswitch in the evaporator box.


edit 2: I doubt its the wiper fuse, then the blue light wouldn't come on.
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Old 04-11-2012, 06:23 PM   #4
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The car is "new" to me. BTW, I was jumping to the wrong GND in the Diagonostic box. LOL

The drivers side fan came on with the jumper between TFA and GND...that is the correct fan to come on, correct?
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Old 04-11-2012, 06:29 PM   #5
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driverside fan is activated by the temp, passenger side is ac exclusive, both should turn on when you press the ac button.
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Old 04-11-2012, 06:37 PM   #6
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Low Freon would be my first item to check.
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Old 04-11-2012, 07:44 PM   #7
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Thank you, will post my results tomorrow. Great help!
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Old 04-12-2012, 05:37 PM   #8
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Low freon wins the race! Yes, I now have ice cold air!..$63 to evacuate and charge with freon, very sweet deal!

Thanks to all for your help!
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Old 04-13-2012, 09:49 AM   #9
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we are winners, Bruce!

Quote:
Originally Posted by MF-Brain View Post
well could be too low of freon in the system, bad a/c relay, or a bad thermoswitch in the evaporator box.
Quote:
Originally Posted by olderguy View Post
Low Freon would be my first item to check.
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Originally Posted by Markusj View Post
Low freon wins the race! Yes, I now have ice cold air!..$63 to evacuate and charge with freon, very sweet deal!

Thanks to all for your help!
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Old 04-13-2012, 12:54 PM   #10
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Actually, driving home I felt like the winner! LOL...man I thought nothing but bad compressor, or something along those lines. So with the money I saved I ordered a Hard Dog rollbar. Win Win!
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