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2003 sebring a/c problem

A/c wont cycle in checked low pressure switch cant find high pressure switch freon is at proper pressure

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Check voltage directly at compressor if no power needs compressor. how did you check low pressure switch?

Posted on Oct 16, 2008

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Switch interruptor


If we are talking about a pressure switch, it usually is the low pressure cut-off switch. Before messing with this switch, verify what your Freon pressure is.
If the pressure is low, the low pressure switch may be fine and you need to add Freon and find out why the Freon escaped.
If you have high pressure, there is a second switch which cuts power to the compressor. Too much Freon will activate this switch.
Tip: You have both a high and low pressure switch. The proper amount of Freon will center the pressure and keep the compressor running more consistently.
Either pressure switch unscrews from the fitting and with a minimum of pressure can be removed from the lines and replaced. The housing should have shapes for wrenches.

May 12, 2013 | 1997 Ford Ranger SuperCab

1 Answer

F 250 aircon problems


Sounds like a low Freon charge. You need to check the pressure in the system. You have 2 cutoff switches, one high pressure and the other is low pressure. You can not get more pressure without adding Freon, so it is likely that you lost pressure from a leak. Your low pressure switch is cycling too fast.

Mar 09, 2013 | Ford F-250 Cars & Trucks

2 Answers

I need to find the ac cycling switch on 2002 neon


There should be a low pressure and a high pressure switch on the lines or the compressor. The low switch cuts power to the compressor if freon or pressure is low, high cuts power if pressure in the system goes over 300 psi.

Jul 21, 2012 | Dodge Neon Cars & Trucks

1 Answer

AC not running in my 1998 Jeep Cherokee. Changed AC clutch compressor RELAY, freon level is good, temperature sending unit replaced along with cooling fan! Checked all fuses still good. Can't seem to...


Hello, You have two switches which work off the pressure of the Freon. Both of these switches cut off the power to the compressor. One is for HIGH pressure and the other is for LOW pressure. Check for power at the compressor clutch connector harness while the controls are set and the engine is running. You may have power and a bad clutch.

When you say that the Freon pressure is good, does that mean the pressure is within the proper range? Too much Freon will make the HIGH switch cut off power and too little will make the LOW pressure switch cut off power.

The ideal amount(ozs) of Freon is what is recommended by the Manufactuer and it will provide a moderate amount of pressure of about 35psi-40psi. You can borrow pressure gauges, called Manifold gauges to measure your system at autoparts stores with loaner programs.

The low pressure side of the system is the one you use to induce the Freon to go into an empty system. You can bypass this switch by taking off the connector and putting a "U" shaped jumper into the harness and the compressor clutch should get power to LOCK up all of the time.

You can take off the switch connector at the compressor clutch and then check for power when bypassing the HIGH pressure switch if the LOW pressure switch does not make the system get power. Only, really only bypass the HIGH pressure switch with the clutch connector disconnected. The HIGH switch is there to prevent damage to all of the components from seals to lines to every piece of Freon hardware in the car. Bypassing with the A/C clutch disconnected will allow you to know if power is getting to the compressor clutch.

Finally, you can get FREE wiring and fusebox diagrams through Autozone.com. Just sign and register to their site and then you can print the documents for yourself.

Good luck with this repair and I hope my solution helps you.

Mar 19, 2012 | 1998 Jeep Cherokee

2 Answers

A/C compressor kicks on and then immediately kicks off. We were trying to add freon and the pressure went way up. I stopped, but the compressor won't stay on now.


ur high pressure switch is kicking ur compressor off,legally by law u need to have ur system evacuated then re charged,, u cant put any more in if system is full,,,u have to let some out,,how u do that is up to u,,u should find out how much the system holds,,sometimes there is a 134a\c sticker under hood or on passenger side strut tower that will tell u,,,drain it completely,,then ad the proper amount,,,,hope it helped,,

May 28, 2010 | 2003 Nissan Pathfinder

2 Answers

I have a 1996 geo tracker I cant get the compressor to run I have relpaced the compressor relay which dosent help. freon is ok compressor cluch kicks in when direct wired.


does the compressor run when bypass the compressor thermal cutout switch on the compressor? here is the part number and a picture.
also does it run when u bypass/jump the compressor cycling switch? it is located in the low side of the sytem, thios is the line that is the larger of the two, hwere is the part # and picture.

1. compressure cutout switch (3 diff ones used)
FOUR SEASONS Part # 35756
Compressor Mounted Cut-Out Switch; 1 Term White
type two
FOUR SEASONS Part # 35973
Compressor Mounted Cut-Out Switch; 2 Term; Blue or Green; Low Pressure
type 3
FOUR SEASONS Part # 35970
Compressor Mounted Cut-Out Switch; 2 Term; Yellow

d2d2a20.jpgthis is type one and two, two wires.

next is type 3 one wire.
06d325f.jpg Next is the low side compressor cycling switch, most common problem.

ACDELCO Part # 155606 {#96069320}
SWITCH,A/C CYCLING

2c15c22.jpg

Nov 02, 2009 | 1996 Geo Tracker 2 Door

1 Answer

Where can i find the Low pressure switch on my 92 nissan pathfinder. and how can i check to see if its bad or switch it on?


The low pressure switch in an A/C system cannot be manually "switched" on or off.
most A/C systems have 2 switches. Both of these switches are "switched" by the pressure of the freon in the system.
One is located on the high side of the system, and the other is on the low side of the system. The one located on the high side is a normally closed switch that opens the A/C clutch circuit and shuts the compressor off when the high side pressure gets dangerously high - usually around 350 - 400 PSI. This keeps you from having an explosion in the event that the hoses become restricted for any number of possible reasons.
The low pressure switch opens the A/C clutch circuit and shuts the compressor off when there is not enough pressure on the low side of the system to safely operate the system. usually somewhere around 20 PSI. The compressor is oiled by oil circulating along with the freon in the system. If the freon leaks out, the pressure drops and the oil cannot circulate because there is not enough freon to push it through the system. So the low pressure switch shuts the compressor off to keep the compressor from blowing up due to oil starvation.
Failure of these switches is very rare. Almost every one that I have replaced was not because the switch didn't switch, but because it was leaking freon.
If your low pressure switch is keeping your A/C compressor from running, it is most likely that the system is either out of freon (due to a leak somewhere in the system) or because it is unplugged.
Your Nissan is equipped with a "Dual Pressure" switch. it does the job of both switches by opening under extremely high pressure as well as extremely low pressure conditions. it is located beween the front grill and the A/C condensor near the Accumulator just to the right (as you are facing the front of the car) of the right headlamp area. See picture.50e4218.gif To determine if this switch is functioning properly, you must hook-up an A/C pressure manifold gauge (to find out what the actual system pressure is) and use a volt/ohm meter to determine if the switch is opening and closing under the correct pressures.

Oct 10, 2009 | 1992 Nissan Pathfinder

2 Answers

AC Wont charge after replacing components


whenever the ac system has been opened it should be hooked up to a vacuum pump designed to evacuate the ac system of any foreign debris and oil etc and after should be able to hold a vacuum to show that there are in fact no leaks then if all is ok at this point you can then charge your ac with the proper freon specified for you car when the pressure reaches satisfactory level the ac compressor will then cycle on you should not bypass the low pressure switch

May 30, 2009 | 1999 Chrysler Town & Country

2 Answers

A/C compressor clutch won't engage, system won't cool


Sounds to me like its simply ran out of gas!, get the system inspected, the clutch wont engage if there is no pressure in the system, hence the switch problem.
Get it recharged and check for leaks, vehicle with air con will loose around 50grams per year from normal usage, if its been years since it was check it could simply just need recharging.

May 21, 2009 | 2002 Ford F250 Super Duty SuperCab

1 Answer

1995 buick a/c compressor will not on


usually it's the high pressure switch that goes bad first. what year make model is the car? need to know to tell you where the switches are located.

Sep 19, 2008 | 2005 Buick Century

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