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Ac blowing warm air at times


Ac blowing warm air at times Mechanic's Assistant: Have you checked the [coolant](/topics-coolant-ford/) level? Have you checked the hoses for leaks? No leaks coolant level good Mechanic's Assistant: What is the m...

Ac blowing warm air at times Mechanic's Assistant: Have you checked the [coolant](/topics-coolant-ford/) level? Have you checked the hoses for leaks? No leaks coolant level good Mechanic's Assistant: What is the make/model/year of your car? 2003 ford expedition eddie bauer 4wd Mechanic's Assistant: Are you fixing your Expedition yourself? What have you tried so far? Yes. Checked refrigerant levels, blew out air in lines, disconnected battery and connected back. We hear a click and then cold air blows for a while but then it goes to warm

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Responses

Automotive Expert
Hello, my name is\*\*\*\*\* will be assisting you today. Give me a moment to review your question. If your VIN is available please send it to me.

1FMFU18L53LA13392
Automotive Expert
The click you hear. Does it come from the lower dash area?

sorry didn't mean to send unicornWhen the hood is up we hear it and lower dash area but only hear lower dash area when system working
Automotive Expert
No worries, it was amusing. The heater box has an electric motor called the blend door actuator. The moves a door in the evaporator case in the dash to control the temperature of the air coming from the climate control. It's extremely common for the gears in the motor to strip. When this happens you end up with erratic air temperatures that you cannot always control and a clicking noise that occurs with the climate control on. I had an Explorer similar to yours and had to replace this motor twice. To repair this issue you will need to replace your blend door actuator. If I can be of any further assistance do not hesitate to ask!

How do you replace?Is it located under the front dash?
Automotive Expert
Yes, it is. I've attached a video that details how to replace the actuator. It does require a bit of disassembly to get access. [Blend Door Actuator Replacement](https://www.youtube.com/watch?v=BERmZRDfqPw)

I will take a look thanks
Automotive Expert
You're welcome! Thank you for choosing JustAnswer.com!

This is for air conditioner problem?
Automotive Expert
Yes, it can cause either problem. Depends on where the door sticks. Either too much heat, or too much cold air.

Doesn’t look like that’s the problem we are having. We get air conditioning but there are times when it just starts blowing warm airClicking is more underneath hoodwhen we hear the clutch engage then we get cold air
Automotive Expert
You checked the refrigerant and the system is full. Does the compressor come on when you have warm air?

NoThe PSI rating is above 100 when there is warm air and everything reads normal when air is cold
Automotive Expert
Okay, let's take another look. Do you have any warning indicators on your cluster lighting up?

no
Automotive Expert
You can run a self test using the a/c controls. - The self-test can be initiated after cycling the ignition switch from OFF to ON. Normal operation of the climate control system stops when the self-test is activated. - To enter the self-test, press the OFF and FLOOR buttons simultaneously and then press the AUTOMATIC button within two seconds. The display will show a pulse tracer going around the center of the display window. The test may run as long as 30 seconds. Record all DTCs displayed. Run this test and tell me what happens. Record any codes you get.

nothing is happeningDo I turn ignition from off to one first then do the rest?these are the buttons

Customer attachment 8/11/2020 12:00:07 AM
Automotive Expert
Turn the ignition on, turn on the air conditioning then hold off and floor together. Release them and quickly press auto. It should begin the self test

I did that and nothing so I'm doing something wrong Do I only press one floor button?
Automotive Expert
Yes, just the one floor button should work.

am i turning on the vehicle or just ignition to on?
Automotive Expert
The ignition to run is enough. It can go either way.

here it is

Customer attachment 8/11/2020 12:11:13 AM

Now the air is warm again
Automotive Expert
That means the test passed and no codes are stored. I think that you may a have relay failing. There is a relay box under the hood. Diagram attached. Remove the relay and swap it with one under the dash, the high beam relay is best. Try this and tell me if the compressor begins working.
Automotive Expert
The relay box should be in the [engine](/topics-engine-ford/) compartment, front driver's side.

ok give me a few minutes
Automotive Expert
No rush.

can't find the relax box under hoodit's an expedition
Automotive Expert
Here is a diagram of the location.

ok it looks like we have to wait for engine to cool down. can we continúe tomorrow?
Automotive Expert
Absolutely. What time do you think you will be online?

the only fuse box we see is under dash which is this one

Customer attachment 8/11/2020 12:47:28 AM
Automotive Expert
That is correct. The upper right large relay, in the line of 3, is the high beam relay that you will put in place of the a/c relay.

where is the ac relay?what #
Automotive Expert
The relay is in the auxiliary relay box under the hood on the driver's side.

Does the 2003 edie bauer expedition have the relay box there? we can't find it
Automotive Expert
Yes. That diagram is in the ford service manual Look in front of the ABS control unit.

ok looking into it
Automotive Expert
Should be between the radiator and headlamp mounted vertically in a box with a cover over it.

it's not that one right?

or this one?
Automotive Expert
That should be it. The second one.

ok let me try to get in therecan't get the box open I can be online tomorrow at noon or so depending on weather
Automotive Expert
Not a problem. I'll be around tomorrow afternoon. My responses may be delayed until around 4 eastern.

ok i'm eastern time too
Automotive Expert
Just checking in. Let me know what you find after swapping the relays.
Automotive Expert
Without further information, I recommend swapping the relays. If you still have a problem with the A/C cutting out after a while check things that can cause the system to shutdown after a while. Ensure the a/c clutch gap isn't excessive. Also check out the A/C Pressure sensor. These things can all cause the A/C system to shut off after running for a period of time. If I can be of any further assistance do not hesitate to ask!

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