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 > 1996 Pace Arrow A/C Question/Help

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DewLess

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Posted: 09/24/19 05:43pm Link  |  Quote  |  Print  |  Notify Moderator

96 PA that a/c has quit. Working perfectly before fueling up and then failure for rest of trip. Had a remainder of a/c pro can to apply refge fill. Gauge read to stop because compressor is not working. Attached is a picture of suspected parts which I suspect after checking wiring for rodent meals. local cannot[image] get to next week late
I do know function of these 2 pressure switches
Can anyone help ?.
[image]

* This post was edited 09/24/19 05:54pm by DewLess *

Lwiddis

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Posted: 09/24/19 06:36pm Link  |  Quote  |  Print  |  Notify Moderator

Twenty-three year old A/C? Replace all components IMO.


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Posted: 09/24/19 09:41pm Link  |  Quote  |  Print  |  Notify Moderator

One or the other look like a low pressure switches. If it detects low pressure, the compressor will not engage so as to not damage it. You can jump the wires together on a low pressure switch for a moment and if the compressor engages, the system needs recharging. Hope that is a start for you

haydoracin

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Posted: 09/25/19 05:36am Link  |  Quote  |  Print  |  Notify Moderator

Ava wrote:

One or the other look like a low pressure switches. If it detects low pressure, the compressor will not engage so as to not damage it. You can jump the wires together on a low pressure switch for a moment and if the compressor engages, the system needs recharging. Hope that is a start for you


On my 1995 Chevy Blazer when the mechanic jumpered across the pressure switch with a paper clip and the compressor started he replaced the switch. Working fine since then.


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Chrisatthebeach

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Posted: 09/25/19 07:12am Link  |  Quote  |  Print  |  Notify Moderator

The one on the left appears to be the low pressure switch.
Unplug and jump the two with a paperclip, that will make the compressor start and the refrigerant will fill.
Just because it is old does not mean it all needs replacement, I use a 1996 Explorer as my beater and it still has cold air at 300k miles.


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DewLess

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Posted: 09/25/19 07:44am Link  |  Quote  |  Print  |  Notify Moderator

Very good information so far, I must have a switch/sensor further up-line to cut power to pressure sensor . I have no voltage at sensor plugs nor does a/c button on dash control thus thinkin of mouse food. Access to heater box is next step to find a switch

RLS7201

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Posted: 09/25/19 10:47am Link  |  Quote  |  Print  |  Notify Moderator

You have a Denso HVAC system. In the link click on downloads for wiring prints.

Also in that era of Ford chassis, Ford left a connection for the AC behind the dash, up high. Fleetwood put an inline 20 amp fuse on that wire for the AC.

If you need to get into the heater/AC compartment, just look for the 4 screws in the kick panel forward of the passengers feet.


Richard

* This post was edited 09/25/19 10:54am by RLS7201 *


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RLS7201

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Posted: 09/25/19 10:51am Link  |  Quote  |  Print  |  Notify Moderator

Lwiddis wrote:

Twenty-three year old A/C? Replace all components IMO.


Nice to see a little humor on the forum.

Richard

DewLess

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Posted: 09/25/19 04:27pm Link  |  Quote  |  Print  |  Notify Moderator

RLS7201 wrote:

You have a Denso HVAC system. In the link click on downloads for wiring prints.

Also in that era of Ford chassis, Ford left a connection for the AC behind the dash, up high. Fleetwood put an inline 20 amp fuse on that wire for the AC.

If you need to get into the heater/AC compartment, just look for the 4 screws in the kick panel forward of the passengers feet.


Richard


THX Richard for the link, those schematics are what I was needing. Some honey doos have come up with mh goin on back burner. Not so bad I suppose with house A/C going.

DewLess

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Posted: 09/25/19 04:29pm Link  |  Quote  |  Print  |  Notify Moderator

Lwiddis wrote:

Twenty-three year old A/C? Replace all components IMO.

At 23 years old does not mean all parts are original, The Old Girl has been nice to me,

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