JohnA
Member
PPS: Mr Dave is correct.
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I have an 08 EB and mind does not seem to be in the same place and I think i need to replace my check valve... can anybody show me where my check valve is??Here is a photo of the solenoid and the check valve on my 2015 Expedition Limited 4x4.
The solenoid snaps into the bracket with no tools (the electrical connector is the top gray one). The check valve is off white and blue (plugs in-line with the vacuum lines).
It is mounted on the firewall on the driver side, adjacent to the brake booster.
I have a positive result... the check valve fixed the problem.
So fo $90-$100 I have diagnosed and fixed the issue with the vacuum front hubs.
So the question now is: where is the rust dust coming from? Is this normal? Can I control the dust somehow or do I just replace the check valve when it chokes on the dust?
Start with the cheapest part 1st: Check Valve!