Question about 1995 Ford Aspire

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1994 FORD ASPIRE

I CAN'T LOCATE THE LOW PRESSURE SWITCH CONNECTOR

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It's on the accumulator.

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Posted on Feb 27, 2009

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1 Answer

Location of the Ac low pressure switch 2007 Mkz


The low pressure switch (also known as the AC compressor switch) will be under the hood, it will be located in the low side AC line from the AC compressor, this is the larger of the two lines from the AC compressor. See picture below, looks like it has a three wire connector. Also what is the AC doing that makes you think this switch is defective? Cycling on and off constantly?

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Jun 26, 2016 | 2007 Lincoln MKZ

1 Answer

How to jump out low pressure switch


to jump the switch simply remove the connector from the low pressure switch and take a piece of wire and insert it into the connector. you are trying to make contact between the two metal tabs in the connector. an open circuit is low pressure.

May 24, 2014 | 1993 Chevrolet Suburban

1 Answer

Where is ac pressure switch


On GM models up to the late nineties it is located in the low pressure AC hose or on the accumulator which the low pressure line attaches to. The switch has a 2 or 3 wire connector to it and screws into a pressure port like a large tire valve..

Aug 06, 2012 | Oldsmobile Custom Cruiser Cars & Trucks

1 Answer

A/C compressor on 95 astro van does not engage at all.


There are a few reasons for the compressor not engaging. Lets start with the most common. low ac gas.A bad clutch on the compressor.Blown fuse.
Let is start with testing for low gas. (134a freon).Locate the dryer. this is on the passenger side of engine compartment. it looks like a tall cylinder, on the top side you will see a switch. unplug switch connector and jump the two terminals in connector with a piece of wire, this is the low pressure or cycling switch. you will be completing the circuit by jumping a wire across the terminals.If the compressor turns on when connectors are jumped then you are low on gas and the system needs recharging.
If the compressor does not urn on then check all fuses, if fuses are good then the next step is to go to compressor and test for power and ground. If you have power and a good ground on the connector to compressor then compressor clutch is bad.A bad clutch will some times blown fuses, so if you replace the fuse because it was blown and it blows again then clutch is bad.
Another test that will help is when you remove the connector from the cycling low pressure switch , test the connector. one wire on the connector should have power when ac is turned on,
Hope this helps let me know what the outcome is. Good day.
I have enclosed a picture of the switch and dryer to help you locate it.If you jump the terminals

Mar 23, 2012 | 1995 Chevrolet Astro

3 Answers

Replaced the ac compressor but now no power to compressor but have power to low and high pressure switches. checked relay under hood, relay and fuse in cabin. what am i missing?


Put a jump wire in the high pressure switch plug. If the compressor works. replace the high pressure switch. Let me know and we can go from there.

Aug 22, 2011 | 1999 Ford Expedition

2 Answers

I bought a 1998 mitsubishi eclipse and the check engine light came on we hooked up the machine to diagnos it and we got 2 codes po700 and p1784 . we are wondering what the codes mean and how to fix the...


DTC 1784: LOW-REVERSE PRESSURE SWITCH
1.Remove transaxle relay from connector. Turn ignition on. Install scan tool and observe low-reverse pressure switch condition. Apply battery voltage to transaxle relay connector terminal No. 8. If low-reverse pressure switch stays off, go to next step. If low-reverse pressure switch turns on, go to step 4 .

2.Raise vehicle enough to allow drive wheels to spin freely. Test low-reverse clutch hydraulic pressure. See HYDRAULIC PRESSURE TESTS under TESTING. If low-reverse clutch pressure test is not within specification, internal transaxle failure exists. If low-reverse clutch pressure test is within specification, observe scan tool.

3.If low-reverse pressure switch turns on, trouble code is intermittent. Check wire harnesses and connectors for damage or poor connection. If low-reverse pressure switch does not turn on, replace solenoid and pressure switch assembly. Recheck trouble codes. If trouble code resets, replace TCM.

4.Check and repair wiring harness between transaxle relay connector and solenoid and pressure switch assembly connector. If wiring harness is okay, check wire between TCM connector terminal No. 10 and solenoid and pressure switch assembly.

5.If wire between TCM connector terminal No. 10 and solenoid and pressure switch assembly is okay, check TCM and solenoid and pressure switch assembly connectors. Repair connectors as necessary. If connectors are okay, recheck trouble codes. If trouble code resets, replace solenoid and pressure switch assembly. Recheck trouble codes. If trouble code resets, replace TCM.

P0700-The Transmission Control Module (TCM) monitors the malfunction of sensors and actuators relating to transmission control. When the TCM detects a malfunction with the control, a signal is send to the Engine Control Module (ECM) to trigger the Engine Light or Service Engine Soon light. The ECM stores the P0700 code and it means the TCM detected a malfunction with the transmission controls.

I would try disconnecting he battery and letting it sit for 5 minutes, then hook it back up to see if they return-the 700 code is probably related to the 1784 code, that seems to be your main issue.

Jun 06, 2011 | 1998 Mitsubishi Eclipse

1 Answer

I need to know where the oli sending unit is and how to replace it?


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Fig. 1: Location of the oil pressure switch-3.3L and 3.8L engines


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Fig. 2: Location of the oil pressure switch-3.0L engine


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Fig.: Oil pressure switch (sending unit) schematic


The low oil pressure warning lamp will illuminate when the ignition switch is turned to the ON position without the engine running. The lamp also illuminates if the engine oil pressure drops below a safe oil pressure level. To test the system, perform the following:

  1. Turn the ignition switch to the ON position.
  2. If the lamp does not light, check for a broken or disconnected wire around the engine and oil pressure sending unit switch.
  3. If the wire at the connector checks out OK, pull the connector loose from the switch and, with a jumper wire, ground the connector to the engine.
  4. With the ignition switch turned to the ON position, check the warning lamp. If the lamp still fails to light, check for a burned out lamp or disconnected socket in the instrument cluster.

REMOVAL & INSTALLATION
On the 2.4L engine, the oil pressure switch is located on the side of the engine block facing the firewall. On the 3.0L engine, the oil pressure switch is located on the oil filter adapter housing, next to the starter motor. On the 3.3L and 3.8L engines, the oil pressure switch is located next to the oil filter.
  1. Locate the oil pressure sending unit on the engine.
  2. Disconnect the negative battery cable.
  3. Disconnect the pressure switch electrical harness.
  4. Using a pressure switch socket, deep-well socket or wrench, loosen and remove the pressure switch from the engine.
To install:
  1. Install the pressure switch into the engine and tighten securely.
  2. Attach the electrical connector to the switch.
  3. Connect the negative battery cable.
  4. Start the engine, allow it to reach operating temperature and check for leaks.
  5. Check for proper oil pressure switch operation.

Hope this helps (remember to rate this answerr).



Dec 22, 2010 | 1999 Plymouth Voyager

1 Answer

How does a person short out the low presure switch on a 1995 cadillac a/c? i would really appreciate any help on this.


The low pressure switch is located on the accumulator, and you only need to remove the connector to the low pressure switch and jumper the wire connector to by-pass the low pressure switch, however I would not recommend doing so because it is there to keep the AC compressor from being damaged due to running it low on R-134a.

If you are trying to charge the AC system you do not need to by-pass the low pressure switch, just start the vehicle and turn the AC on to maximum, then charge the AC system and when there is enough pressure in the system the compressor will come on, and then just continue to fully charge the AC system.

Jun 08, 2010 | 1997 Cadillac DeVille

1 Answer

Air conditioner compressor has no power. unit was replaced and charged when energized there is no 12v to pull clutch in.


there is a low pressure switch located on the low pressure line( larger line ) connector has two wires if you disconnect that switch & jumper it and the compressor runs then you have to replace the switch.

Jul 07, 2009 | 1995 Oldsmobile 88

2 Answers

Where is low pressure connector located on the


The low pressure service gauge port valve is located on the manifold of the A/C compressor manifold and tube assembly at the A/C compressor

Jun 26, 2009 | 2000 Lincoln LS

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