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I can tell you that Ford built vehicles have a shutoff in the trunk.

Posted on Jan 22, 2013


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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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My ford 500 air conditioner blows cold air but it starts and stops constantly and sometime when it stops the check charging system light comes on can someone help me on this?

Hello, This sounds like you have several problems which are minor, but one problem reveals another. The Serpetine belt and the Tensioner are likely bad. You are getting a slipping belt from the A/C clutch cutting on and off.

You need to check the Freon level in your A/C so that the compressor clutch stays on longer. There is also a low-pressure switch on the A/C line close to the black oblong tank. The switch protects the compressor from burning out due to low pressure. If the low pressure switch gets weak, it will cut off the A/C clutch too early and frequently. This switch is easy to replace.

Once you check the Freon level, you may need to add Freon. There are cans of Freon which come with gauges and chemicals to help patch small leaks, or you can take it somewhere for service.

The Charging system warning can just be due to the Serpetine belt slipping.. If you go to Autozone, Oreilys, or Advance autoparts, they will check your car for FREE. It is possible the internal Voltage Regulator is cutting out inside the Alternator, but with the A/C problem, more likely the Alternator is okay. The testing will indicate what is needed.

I hope my solution is very helpful.

Jul 25, 2011 | 2005 Ford Five Hundred

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1997 jetta ac works for one minute then warm air blows

check the refrigerant level. The compressor is running until the low pressure or high pressure switch switch cuts it off.

Running the unit without enough refrigerant will damage the compressor because the lubricating oil is dissolved in the refrigerant. This is the reason for the low pressure switch cut off--to protect the compressor from damage.

If pressure gets too high, the compressor seals will blow. Thus the reason for the high pressure switch. Too much refrigerant or too much air in the system (due to a leak) will cause high pressures.

If refrigerant level appears to be correct, then suspect trapped air from a leak causing a high pressure cut-off. If refrigerant is low, suspect a leak causing a low pressure cut-off.

Mar 02, 2011 | Volkswagen Jetta Cars & Trucks

1 Answer

Red Brake light ON, Parking brake off and switch tests good, All wheel sensors test good, brake fluid switch, and fluid level good, all fuses are good. The light goes out when I unplug brake fluid level...

it sounds like you have a faulty fluid level switch if you fluid level is ok . you can replace the switch very easy and cheap. if you go to you local salvage yard and cut the switch head of the same make of car and cut the switch of you car and join the wires up they sould be the same colour that should solve the problem very cheap

Aug 29, 2010 | 2001 Mercury Sable

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When I put paper clip ac works but Otherwise it ...

The low pressure switch on the a/c line is at fault or you have to little freon in system to make the pressure switch work. The low pressure switch is put in the a/c line to keep you from burning up the a/c compressor. Anytime the freon fall below a certain level (pressure) then the switch will cut out to keep anything from burning up. Hope this will help you.

May 20, 2010 | Cars & Trucks

2 Answers

Compressor seems to cycle on and off 2005 nissan maxima

For protection of your compressor the system has a low pressure cut-out switch that turns the compressor off when pressure is too low (normally due to insufficient charge). This cycling on/off indicates low freon level. Charge the system and you'll be OK.

Jun 29, 2009 | 2005 Nissan Maxima

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Toyota celica, air conditioner will not work, evac done and recharged, nothing, changed out low pressure switch and still nothing. switch on dash blinks when you press it, compressor tries to come but cuts...

Weird, usually the pressure cut out switch, if you manually "bridge" this (only briefly say 4 secs) the a/c should work, sometimes a plugged/blocked condensor or evaparator will cause this . Also look at engine related temp switches, example water, as these are designed to overide and turn off the ac if the car gets too hot etc.
1)Bridge switch
2) ? oil level in compressor (seized??)
3) temp switches,
4)double check that the system is not blocked, coz if it is then the compressor will only go briefly and then stop due to "overpressure"

Jun 16, 2009 | 2001 Toyota Celica

1 Answer

Is there a fuel cut switch or sensor on a 90 mx6 gt that cuts the fuel at higher boost levels than stock if so where can i find it on the car? i have the same problem when i hit 10 psi the engine stop,how...

i don't think there is a fuel cut switch but there definitely is a fuel pressure regulator. the stock specs call for the system to make more like 30 psi, so if you are only getting 10 psi there is a problem. you might check for clogged fuel filters. if you mean that you are going 10 psi over stock then might be the fuel pressure regulator that's causing you to not be able to, maybe you can get one that lets you pass more fuel, that would be an aftermarket part. hope that helps

May 28, 2009 | 1991 Mazda MX-6

1 Answer

A/C compressor turns on and off even though A/C is switched off

Hello akaobaer...Sounds like you have a pressure switch defective or the system charge (freon) is low...The a/c clutch relay is operated by the Powertrain Control Module. However there are inputs from the low pressure switch (located on the accumulator) and a high pressure cut out switch (located on the discharge line near the compressor) that control whether or not the PCM turns on the clutch relay as well.
If the refrigerant level is low, the PCM low PSI switch will cause the clutch to cycle.
The PCM turns on the relay by grounding the negative side of the relay coil...The low PSI switch should turn on (close) at approx 34 PSI.....and will turn off (open) at 20-22 PSI...May sound complicated but it's really not. Have a qualified HVAC tech. check the system for leaks before recharging it, if needed.
Good luck...i hope this answers your question and will fixya up...

May 19, 2009 | 1999 Jeep Grand Cherokee

2 Answers

Air conditioning

I'm not absolutely sure on this one, but many compressors have a low pressure and a high pressure cut off switch. The low pressure switch monitors to make sure there is enough refrigerant in the system. Too low and it cuts off because otherwise your system will ice up (go figure that one out!) The high pressure switch is there to protect from clogs in the system causing damage to the compressor or other system components.

You should have a qualified professional check the system and both of those sensors. You most likely have a clog in the system which can be caused by a broken desiccant bag or a compressor that is beginning to self destruct and some piece of metal is clogging the system in a hose or at the orifice tube.

In any case you need professional help here...

May 07, 2009 | 2004 Dodge Stratus

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