New guy intro, and

[irishpride]

HI everyone, I have an 07 expedition el limited. I've had it for a few years now and it's never let me down. She has 161k miles and plugging along just fine. I'm not new to wrenching on cars (or trucks) just not used to fords, yet. I've been tinkering on vw's and audi's for many years.

I had an 05 navi before this expy so I'm not new to their quarkyness


Things I've done so far on this beast

-fully integrated Pioneer: navi, Bluetooth, replaced all the door speakers, and sub to fill in the base. nothing to beat the street down just to make the movies sound good for the kiddos on the long road trips.

- hardwire passport 8500

-passenger window reg

- spark plugs (lucky me, nothing broke even at 130k miles for their fist change)

- trans drain and fill

- k&n air filter

- added the elbow to the ac drain to stop the water from coming in

- cleaned the clogged moon roof drains


issues
just started hearing the dreaded cam phaser/ valve solenoid noise. so I'm sure that will be fun.

The only other thing "wrong" is if I run my ac everything works fine, then turn off the key wait a minute or two and then I can hear a sound kind of like "meeeeeeeeeeeee" high pitched coming from the front for the truck. again this is when the truck is turned "off", after running. any ideas? it's not killing it now so, what ever

Tony

 

[bedrck46]

Welcome to the forum

 

[irishpride]

thanks

 

[toms89]

Just a guess but maybe your hearing the a/c lines pressure equalize between the high and low side.

 

[JimmyM]

Could you elaborate on the A/C drain? Or point me to a tread?
Thanks.

 

[toms89]

I don't really know enough about the a/c system but there is the high pressure (hot) liquid side and a low pressure (cold) gas side to the freon lines. I believe the conversion takes place at an orifice located near the passenger compartment. The drop in pressure is what makes it cold. When the compressor is shut down the pressure will naturally equalize between the high and low sides.

Its my guess that when the freon is equalizing or flowing from high to low side after it is shut down it is making noise for whatever reason.

 

[JimmyM]

Could the sound be a vacuum motor relaxing?

 

[irishpride]

Could you elaborate on the A/C drain? Or point me to a tread?
Thanks.

here you go

AC Drain tube, sunroof drain, plugs, and rear pinion seal today - Ford Truck Enthusiasts Forums

 

[irishpride]

I don't really know enough about the a/c system but there is the high pressure (hot) liquid side and a low pressure (cold) gas side to the freon lines. I believe the conversion takes place at an orifice located near the passenger compartment. The drop in pressure is what makes it cold. When the compressor is shut down the pressure will naturally equalize between the high and low sides.

Its my guess that when the freon is equalizing or flowing from high to low side after it is shut down it is making noise for whatever reason.

I agree this is some kind of equalizing sound, but never heard and meeeeeeeeeeeeeeeee noise before, usually just a pshhhhh. quick and easy. this is almost like some kind of avionics sound, like when all the electronics on a fighter jet start lol.. but only after shut down. also this can happen anywhere from 1 to 5 mins after shut down. I'll try to nab a vid of it tomorrow.

 

[JimmyM]

Thanks. Looks like it's only an issue on 2009 and earlier. But good to know.

Sent from my Transformer Prime TF201 using Tapatalk

 

[GAINMOB]

welcome to the site...do you have pics of the hardwire radar install? I have a beltronics and the state troopers have upgraded their radars...I got a ticket last week and didn't pick him up...my beltronics is 4yrs old...first fail EVER...kept me out of A LOT of tickets...so I'm going to buy another one and hardwire to truck

 

[irishpride]

welcome to the site...do you have pics of the hardwire radar install? I have a beltronics and the state troopers have upgraded their radars...I got a ticket last week and didn't pick him up...my beltronics is 4yrs old...first fail EVER...kept me out of A LOT of tickets...so I'm going to buy another one and hardwire to truck

I don't. I just ran the wires up the little plastic cover for the rearview mirror assembly across the headliner, down the pillar through the dash to my radio wires. Since I have an aftermarket radio I tapped into the red (acc or key power, and black ground) I see you also have an aftermarket so this would be simple.

bought the wire from passport so I would have the proper plug etc, and it was plenty long enough. I'm sure BT would have something similar