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Old 10-07-2005, 01:29 PM   #1
jilly
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Default Refrigerant and Radiator Cooling Fan?

Hi

last week I turned on the AC and a big puff of visible vapor came out of the AC vents. Since then, my coolant fan hasn't engaged at all, causing the temp guage to go in the red if I don't drive with the heat on full blast.

I've printed out the helpful Wolfman's Guide for Diagnosing the Radiator Cooling Fan and plan to work from that this weekend.

My question is: was the visible vapor possibly a refrigerant leak?

Thanks
Jilly

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Old 10-07-2005, 01:34 PM   #2
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Default Re: Refrigerant and Radiator Cooling Fan?

yes it is possible, how often do you use the A/C? was this right at startup or after the A/C was running for a while? how was the cooling before the vapor? how is your coolant level?

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Old 10-07-2005, 01:39 PM   #3
jilly
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Default Re: Refrigerant and Radiator Cooling Fan?

Thank you--the AC worked well before the puff...I use it everday. I turned the AC on and got the vapor puff right away.

I haven't really used the AC since the radiator fan quit, though, since I've had to commute with the heat on. So I can't compare how it is working now with before.

My radiator coolant level is fine. I have no to way to test the refrigerant volume myself.

Jilly

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Old 10-07-2005, 03:12 PM   #4
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Default Re: Refrigerant and Radiator Cooling Fan?

Sounds like a hole in the evaporator $$$, but then all A/C work is. When the A/C compressor engages the cooling fan is turned on to pull more air through the condensor. Most likely your refregerant is low or not there. So, the pressure switch on the A/C won't allow the compressor to engage and the cooling fan doesn't come on. Provided your ECTS is working right, the fan should come on when the gauge is somewhere between 3/4 and the red.

If you've never changed your ECTS, you should with one from a dealer.

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Old 10-07-2005, 09:28 PM   #5
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Default Re: Refrigerant and Radiator Cooling Fan?

get that fan fixed first and then go from there.

did the vapor puff have any smell to it? if it was freon, it would be kind of stinky.

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Old 10-07-2005, 09:37 PM   #6
jilly
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Default Re: Refrigerant and Radiator Cooling Fan?

Thank you--no it didn't smell like anything. And I checked the AC on the way home from work and it worked fine. So I am going to get a temperature sensor thingy from the dealer and replace it tomorrow.

Have a good weekend

Jilly

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