A/C compressor drawing current all the time
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Joined: Jul 2007
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A/C compressor drawing current all the time
I have had a post on here for a while about 4.5 amp draw on my 2002 Ranger. I now think the problem is the A/C compressor. Whenever I connect the battery the electric clutch draws in and I think this is my problem. I checked a identical ranger today and the clutch is dis-engaged until the A/C is turned on. I have been told there is a switch bad that is telling the compressor to run all the time. If anyone can shed any light on this please let me know. I would really like to fix this myself and save alot of money. If you need further info please see my amp draw posting. Thanks Troy troyandsusan@bluemarble.net
Post Fiend
Joined: Jul 2005
Posts: 8,462
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From: Durant, OK (SOSU)
The pressure switch tells the A/C compressor clutch when to engage and disengage.
If this switch failed, the compressor would not shutoff, as it would see a 0 PSI reading in the system at all times, this would allow the system to overpressurize and possibly destruct.
I'd bet money that this is your problem with the clutch not disengaging.
If this switch failed, the compressor would not shutoff, as it would see a 0 PSI reading in the system at all times, this would allow the system to overpressurize and possibly destruct.
I'd bet money that this is your problem with the clutch not disengaging.
Post Fiend
Joined: Jul 2005
Posts: 8,462
Likes: 4
From: Durant, OK (SOSU)
To be perfectly honest, I have never had an issue with my A/C systems, and have not the slightest clue where the pressure switch is located in the Ranger.
You should be able the buy the part and install it if the pressure is let out of the A/C system, but I would say the A/C system would be damaged beyond use from the over-pressurization.
You should be able the buy the part and install it if the pressure is let out of the A/C system, but I would say the A/C system would be damaged beyond use from the over-pressurization.
Post Fiend
Joined: Jan 2003
Posts: 9,748
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From: Connecticut
The cycling switch is on top of the acuumulator located near the passenger's side fire wall. You don't need to discharge the system before you take it off.
The pressure cut-off switch is located up near the compressor. Again, you do not have to discharge the system in order to replace the switch.
The pressure cut-off switch is located up near the compressor. Again, you do not have to discharge the system in order to replace the switch.
Last edited by Rockledge; Jul 4, 2007 at 07:41 PM.
