Lincoln Repair Questions? Ask a Mechanic for Answers ASAP
Hi. What is the year and engine size of your aviator?
Ok thanks. What is the problem you are having?
Ok. I was just typing to ask that. Thans.
When it works is it cold at all?
Ok. Freon level should be good. Is it auto climate control or manual?
Yeah. I was reading the wiring diagram
I am not finding the cycling/low pressure switch in the wiring diagram. I need another second. THanks.
this uses an expansion valve setup. There is no low pressure switch. The engine computer grounds the ac clutch relay which then turns on the ac compressor.
There is an ac diode which sometimes goes bad. If it does the relay can not get a ground signal.
It is possible but not very likely. Do you have a test light?
Ok. I am a ford dealer mechanic for 20 years and the service information for some reason is very vague on that particular ac system.
If you go to the ac clutch relay and remove it, with the engine running and ac on, you should have battery voltage on terminals 1 and 3 of the relay.
Should say on the relay.
I can offer you, through the website a pdf file of the air conditioning wiring diagram if you are interested. It is a additional 10 dollars though.
Ok. With the relay removed if you want you can use a jumper wire and go from pin 1 to pin 5 and see if the compressor kicks on.
I know what you mean. A lot of times I wish I could just be there to do it. haha
Also, pin 3 is fused by fuse number 10 (10amp) in the interior fuse panel. Check that fuse as well.
Under the hood fuse 37 (15amp) is for pin 1 of relay. If that fuse is blown just reinstall relay replace fuse and see if the system works.
If 37 is good check fuses 11 and 41 in the box under the hood as well.
Probably from pulling fuses. I dont see why pin 1 would not have power now if it did before. Does the system work if the relay is put back in?
are you sure fuse 37 is good?
in the battery box under the hood. (15amp)
make sure you are getting the correct fuse location. The trans codes should clear.
If the fuse 10 keeps blowing when the relay is installed, the relay may be bad, or the wire from the relay to the compressor clutch is shorted to ground.
Yes. I would check the wiring down by the compressor clutch make sure they are not chaffing on anything or the wires melted together or anything like that.
Looks like the purge valve maybe.
Its hard for me to see the lines and where the go from the pictures
There may be a diagram under the hood or on the fan shroud of the vacuum hoses. They look like they might go to the egr valve or fuel rail pressure sensor
Beside the 3 mentioned componenents already there is not much else hooked up to vacuum.
Do you see the decal under the hood that is white and says vehicle emmisions control information? has spark plug gap on it.
This is the best vacuum diagram you will be able to find.
i am not sure. I just saved it. The photo seems clear here
Hi. I see you got your ac problem resolved. Need any more help with your truck?