A/C only blows hot air

Tiny
EDWARDCODE
  • 1995 LINCOLN TOWN CAR

Air Conditioning problem V8 Two Wheel Drive Automatic 159000 miles

I have a 1995 Lincoln town car and my a/c only blow hot. The a/c panel is working but it will not blow cold at all. I check the fuses under the dash and under the hood, they all look fine. I check the relay buy switching the a/c relay with the fuel relay and the engine started up and the a/c is still the same.

So I research it a little bit and I did the EATC self test and it came up with code 125. Then I was told that I should clear the DTC from the EATC and then see if the code came back. It did not come back, I did not get code 125 again.

I do not know if I need to wait and see if it comes back on or what.

Also my software desplay was C05120C42D16.

It is very hot in South Carolina and I need to fix this problem fast.

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Friday, April 24th, 2009 AT 2:12 PM

57 Replies

Tiny
JACK42
  • MEMBER

125 is an intermittent code for the Vehicle Speed Sensor. IT sounds like it might be the control head itself going bad which that car had a problem with.

Here is a guide that will help you get the problem fixed.

https://www.2carpros.com/articles/car-air-conditioner-not-working-or-is-weak

Please let us know what happens.

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Saturday, April 25th, 2009 AT 7:30 AM
Tiny
EDWARDCODE
  • MEMBER

The clutch is not engaging at all. The Relays are working and the fuses are all good.

I did the self test again and it came up with 115 and 125

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Saturday, April 25th, 2009 AT 9:13 AM
Tiny
JACK42
  • MEMBER

115 is also listed as an intermittent fault. Need to get gauges on it to see if the system pressure is enough to turn it on.

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Saturday, April 25th, 2009 AT 10:08 AM
Tiny
EDWARDCODE
  • MEMBER

Will auto Zone or Advance Auto Parts have these gages for me for free. Or is there a round about way of getting this infomation that I need

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Saturday, April 25th, 2009 AT 4:33 PM
Tiny
JACK42
  • MEMBER

Not that Im aware of. When it comes to a/c you have to be sure the pressures are good, otherwise the system wont engage thec ompresssor

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Monday, April 27th, 2009 AT 9:02 PM
Tiny
EDWARDCODE
  • MEMBER

Ok I went to and ac repair shop and they tested it for free. They said that there is pressure to engage the clutch but there is no power getting to it. He said that it could be the control head or a few other thing that I forgot. I know that the fuses are good and the relays are good. What should I do next.

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Tuesday, April 28th, 2009 AT 10:12 AM
Tiny
JACK42
  • MEMBER

Do you have a test light or meter? If so go to the switch on the low side line (bigger a/c line) and seeif it has power in and out

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Tuesday, April 28th, 2009 AT 11:10 AM
Tiny
EDWARDCODE
  • MEMBER

I do have a meter. Is that under the dash or on the ac unit

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Tuesday, April 28th, 2009 AT 11:29 AM
Tiny
JACK42
  • MEMBER

Under the hood

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Tuesday, April 28th, 2009 AT 1:53 PM
Tiny
EDWARDCODE
  • MEMBER

I have figured it out. It is the control head and I have worked around it through fuses and the switch.
I do have one last question. Will the clutch engage and disengage on its own still. When I drive with the ac on it would engage and disengage every so often to keep it from freezing. Will it still do that if I wired it through the switch

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Wednesday, April 29th, 2009 AT 6:52 AM
Tiny
JACK42
  • MEMBER

Yes it should. The switch isnt what cycles it, the system sees the temp and goes from there. If I is cycling it may still be a tiny bit low on refrigerant. Even though it had ok static pressure, when running it may not have enough in it

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Wednesday, April 29th, 2009 AT 7:19 AM
Tiny
EDWARDCODE
  • MEMBER

Thank you very much for all of your critical help

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Wednesday, April 29th, 2009 AT 7:28 AM
Tiny
HANDYMAN12
  • 1996 LINCOLN TOWN CAR

Air Conditioning problem
1996 Lincoln Town Car 4 cyl Two Wheel Drive Automatic 97000 miles

I have checked the gas and it is charged. When you turn on the A/C it just blowes hot air, the low side is cold and the fan blows air but hot. What could it be

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Tuesday, May 2nd, 2017 AT 11:05 AM (Merged)
Tiny
PMBTHEDAD
  • MEMBER

I hope you get a qucik answer. Same problem is occurring on my 1999 Lincoln Town Car.

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Tuesday, May 2nd, 2017 AT 11:05 AM (Merged)
Tiny
MSHT58
  • 1998 LINCOLN TOWN CAR

Air Conditioning problem
1998 Lincoln Town Car V8 Two Wheel Drive Automatic 86.000 miles

hot air all the time

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Tuesday, May 2nd, 2017 AT 11:06 AM (Merged)
Tiny
BMRFIXIT
  • EXPERT
  • 19,478 POSTS

Suspect blend door
check for codes
Simultaneously depress OFF and FLOOR buttons, then press AUTOMATIC button within 2 seconds. Display will show a pulse tracer going around the center of the display window for up to 30 seconds while test is running
Code Number Circuit Test
24, 25 Temp. Blend Door Actuator
30In-Vehicle Temp. Sensor Short
31In-Vehicle Temp. Sensor Open
40, 42 Ambient Temp. Sensor Shorted
41, 43 Ambient Temp. Sensor Open
50, 52 Sunload Sensor Shorted
115 Engine Coolant Temp. Sensor

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Tuesday, May 2nd, 2017 AT 11:06 AM (Merged)
Tiny
HARRYALBERT
  • 1996 LINCOLN TOWN CAR

Air Conditioning problem
1996 Lincoln Town Car V8 Four Wheel Drive Automatic

hot air all the time

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Tuesday, May 2nd, 2017 AT 11:06 AM (Merged)
Tiny
MHPAUTOS
  • EXPERT
  • 31,541 POSTS

Hi there, check that you have refrigerant in the system, I would be thinking that you may have a leak and the low pressure switch has shut down the compressor, have this check first.

Mark (mhpautos)

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Tuesday, May 2nd, 2017 AT 11:06 AM (Merged)
Tiny
HARRYALBERT
  • MEMBER

A/c compressor is working but heat coming out of vents

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Tuesday, May 2nd, 2017 AT 11:06 AM (Merged)
Tiny
MHPAUTOS
  • EXPERT
  • 31,541 POSTS

Possibly the heater temp valve is stuck open and this is bleeding hot air into the system, with heater shut off are both heater hoses the same temp to feel?

Mark.

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Tuesday, May 2nd, 2017 AT 11:06 AM (Merged)

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