Question about 1999 Ford Expedition

1 Answer

Air conditioning stopped working step for trouble

Air conditioning stopped working step for trouble shooting

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Ford Master
  • 5,676 Answers

There are several ideas on test gauges for A/C pressure. You need to find out if you have any Freon pressure in your system. Low pressure will activate a cut-off switch to protect the compressor from seizing.

If you look at the passengers side of the Firewall, under the wiring bundle attached to the Firewall, the low pressure fitting is on the black oblong tank. The pressure cut-off switch is on a A/C line leaving this tank.

You can by-pass the cut-off switch with a wire loop to see if the compressor engages and what the running pressure is for the system. You can work with low pressure better than some other problems.

There are Freon cans with sealant and conditioner which can fix minor problems. Once you get enough pressure to deactivate the cut-off switch the Freon should be pulled into the system.

Have windows open, A/C on Max, and then use the gauge to keep from overfilling the system.

Posted on Oct 16, 2013


1 Suggested Answer

  • 2 Answers

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

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

What will it take to correct? trouble shooting p1574 code shown on a 2006 HHR

DTC P1574 Stoplamp Switch Circuit
The cruise release switch is a normally closed switch. The stop lamp switch signal circuit is a normally open switch. When the brake pedal is released, the engine control module (ECM) detects a high voltage signal on the torque converter clutch (TCC) brake switch/cruise control release signal circuit and a low signal voltage signal on the stop lamp switch signal circuit.

Diagnostic Aids
In order to avoid a misdiagnosis, perform the following:
• Inspect for proper operation of the stop lamps. Refer to Exterior Lighting Systems Description and Operation .
• Inspect for proper adjustment of the stop lamps. Refer to Stop Lamp Switch Adjustment .
• For an intermittent condition, refer to Testing for Intermittent Conditions and Poor Connections .

Do the stop lamps work properly?
YES - Go to Step 3
NO - Go to Stop Lamps Inoperative
Test the stop lamp switch signal circuit for an open or for a high resistance between the body control module (BCM) and the engine control module (ECM). Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
YES - Go to Step 6
NO - Go to Step 4
Inspect for poor connections at the harness connector of the ECM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
YES -- Go to Step 6
NO - Go to Step 5
Replace the ECM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
YES - Go to Step 6
Use a scan tool in order to clear the DTCs.
Operate the vehicle within the Conditions for Running the DTC.
Does the DTC reset?
Go to Step 2
System OK

Dec 28, 2016 | 2006 Chevrolet HHR

1 Answer

Car will not start

Not start how ? Engine cranks - no start or when you turn the key to the start position nothing happens , that's a no crank - no start condition . Both have different trouble shooting steps !

Dec 30, 2015 | 2002 Buick Century

2 Answers

TROUBLE SHOOTING THE Air Condition system

Hi, when it comes to vehicle air conditioning I advise taking it to a
professional with the appropriate experience/qualification...I have heard instances of individuals being blinded by freon.
If your blower only works sometimes might be that the compressor has issues.

Jun 20, 2015 | 1997 GMC Sierra

1 Answer

The cooling fan only work's when I have the air-conditioning on, when I put it off the motor starts to over heat, what can it be.I though it was the thermostat and I pull it out but I still have probl

Is there a reason for the cooling fan to work when the air conditing is off? Perhaps when you have outside air coming into the cab and you want more of the outside air? Your Owner's manual may help and may provide some trouble shooting help.

May 02, 2015 | 2005 Chrysler Pacifica

1 Answer

Trouble shooting air conditioning short circuit

bad compresser clutch shorting out replace it

Aug 20, 2014 | Cars & Trucks

1 Answer

Car chugging when stopped. I have replaced tps but doesn't fix. Stops chugging when tps is removed.

The TPS is used by the vehicles ECM for power enrichment,and idle stability when you remoce the sensor connector the ECM uses a substitute value so you can drive the vehicle. So the TPS is not the problem here You are basically suffering from a vehicle lean condition or false air. Removing the TPS connection only enrichen the car.Trouble shoot the MAF (mass air flow ) this is the one that houses the air filter check the boot going to the intake manifold make sure its not cracked or leaking air giving false air.2_24_2012_5_22_13_am.gif

Feb 24, 2012 | 2000 Toyota Camry

1 Answer

How to trouble shoot air condition compresuer

You really want to troubleshoot your AC. Here are some items to follow:
1- Make sure your Compressor clutch work first. You can jump the wire to test it when the engine is off.
When you know the clutch work then you can look for the other things not makeing it activated.
2- It it doesn't work then you know the problem right there.
3- If it works then check the Low and high pressure according to compressor spec.
3- Check your engine temperature sensor. Don't think that your temp reading gauge is coorect then your engine temperature for your AC is working.
4- Check your compressor sensor speed. It has to be in sych with your crankshaft sensor before it allows the clutch engaged to prevent burning your compressor when it is locked up is in freezing mode ( case some clever people jumping wire to control the clutch bypassing all other rerquirement).
5- If you think these items need to be addressed by professional better then do-it yourself then I have no objection. Good luck on trying.

Jul 09, 2009 | 2001 Chevrolet Blazer

1 Answer

1989 S10 Blazer air conditioning problem

the problem lies in the temp control selector, the knobs on your dash, that can go bad causing the dampers not to close, i would stop by a junkyard and pick one up, this is more than likely the problem.

Jul 03, 2009 | 1989 Chevrolet S-10 Blazer

Not finding what you are looking for?
1999 Ford Expedition Logo

69 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts


Level 3 Expert

78936 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

5676 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides