air ride suspension , compressor problems, replacement 

thanks for the feedback

It could be described as a buzzing sound. Pop your hood before you start it, make sure you close doors once startd and check if your sound seems to be coming from behind passenger headlight

Those are sensors. they are somewhat mechanical to tell compressor to turn on. they are located in the rear of the vehicle along the cross beam. you'll have to crawl underneath vehicle to access

@@Kevtheguitarguy I'm still not sure how to test them. If they have "play" in them...I'm not sure what that means.

@@michaelbray7472 probably not the best terminology to use. when I say "play" What I mean is when you disconnect the clip the arm and sensor should swing freely as opposed to being frozen

Start with matching up with old one to make sure they are the same. Besides that make sure you're not trying to plug them in upside down

@@Kevtheguitarguy You can't put the two plugs upside down. It will only plug in one way. I can get it to in 90% of the way and then it stops. I'm wondering if the gasket that seals the plug is stopping me. I'll try some lithium today and see if that helps. If not I guess, I'll bring it to my mechanic. Thanks

I am going to guess you have a leak in either a line or an airbag. get some soapy water in a spray bottle. have the rear end high, turn off vehicle, go under and start spraying and look for bubbles to identify leak. if it's big enough you may even be able to hear hiss. also if you have leak you would notice your compressor coming on more often than it should, this may be why it burnt out in the first place. good luck

@@Kevtheguitarguy thanks I will check. To me, a leak would mean constant lowering but it only lowers when I turn the car off like it's on some kind of setting to lower when the engine is off.

When car is on compressorvruns to keep it from lowering. When car is off compressor is also off so there is nothing refilling it when car is off.

look at your owners manual it should list what fuses/ relay are and where. In my case the inside of the lid to the relay box had each one numbered so I could cross reference. I believe it was number 10 on mine

@@Kevtheguitarguy vehicle* meant ur vehicle matches the 2012 expedition I looked can't find it. Didn't look at entire book but will have to check again thanks.

@@Kevtheguitarguy yeah but there was a wrong part for the vehicle I was working on. Couldn't find it anywhere. Physically on the car, owners manual, Google, or RU-vid. I had to call Ford and ask if they even have that part for.the vehicle I was working on and they said they didn't. Sometimes after market car parts stores sell u the wrong items. Especially if u don't know the exact motor and type of vehicle u are working on. Thanks anyway for the info and video. Have a good one.

@@xhoustonkingx6212 I double checked my manual and it is relay #10 It is in the fuse box on the drivers side of just under the hood. If they are not numbered it is the square relay in the upper right hand corner if you are standing in front of vehicle looking at it. It is a switch that either works or doesn't . you can either test it or listen as you turn suspension system on it should "click". It is pretty rare that they go . I think I referenced when a bulb goes out it is usually the bulb not the light switch. good luck with it

@@Kevtheguitarguy yes but the one we had was called a relay for.the air suspension compressor. However it wasn't for the vehicle we were working on. They gave us the wrong part.

If compressor is working but coming on too often you likely have a leak. on the bottom of compressor is a black hose , this is where the air starts. spray with some soapy water and see if it bubbles at the connection, then spray all along lines looking for leak. eventually the lines will make to air bags where shock absorbers are, spray all around there to see if you can find leak

air suspension air compressor

you should be able to have them "bench test " the compressor. this means they give it the required power to turn it on outside of the vehicle. if it turns on it's good if not it's bad.

thank you so much

open hood , when you turn on car and turn on air suspension system you should hear compressor turn on. If it's not there's an issue b4 compressor. if compressor turns on then it's after compressor (maybe air bags or a bad line not delivering air to bags)

@@Kevtheguitarguy compressor does not turn on, and with a bypass in the relay (fuse 10) it does, but that's not a permanent solution. I still buy a new relay regardless, and thanks for the tip

@@Kevtheguitarguy actually now that I think of it do you know what I should be looking for before the compressor and after the level sensors? There must be something in between that is giving me grief

@@Kevtheguitarguy last update! One of the new height sensors was faulty so I cleaned up and throw on one of the old ones and it raised instantly. Thanks for the help!

@@jakebjones5619 glad you were able to figure it out. dealing with faulty parts always throws me off because you "think" it can't be the problem it's new.

My activate/deactivate isn't a switch, it is a page on monitor for onboard computer. I had another navigator that had a turn off switch on the passenger side below the glove compartment behind a panel. If this is what you are looking for I would search junk yards/ salvage yards for your year.