K-Clive
Active Member
Hi ALL
I have an odd(?) problem - enough about me!
2012 Expedition MAX - pulling a trailer, long drives (600km Toronto- Gore Bay) after about 2hrs, like it's on a timer(?) I feel a chatter
in the pedals, here what sounds like road noise, chatter, buzz... and it comes and goes, usually on uphills when pulling vacuum.
It seems to me it comes from the left front hub.
IF I switch 2H to 4A the noise stops and smooth sailing... I leave it like that for a few minutes and switch back to 2H and it's fine for a while and then
we go through the whole thing again. After a bunch of this activity, it seems to stop completely and we finish our journey.
I looked through the previous owner's service reciepts and there is a left front hub service just before he sold the vehicle.
It says: (In French) 2H chatter problem and they replaced a solenoid? -> Lock gauche selenoid du 4x4 en trouble P.C. remplacer lock + selenoid
Road test OK.
It's impossible to test drive this issue because it takes 2hrs of highway speeds pulling weight to produce the problem.
What is it actually doing when I swith 2H to 4A?
Is this a vacuum leak or electronics or locking hub issue?
I have heard FORD has a LOT of problems with this stuff on F150 & EXPY - the mechanics I taled to said: start replacing stuff until it stops doing it!
I have an odd(?) problem - enough about me!
2012 Expedition MAX - pulling a trailer, long drives (600km Toronto- Gore Bay) after about 2hrs, like it's on a timer(?) I feel a chatter
in the pedals, here what sounds like road noise, chatter, buzz... and it comes and goes, usually on uphills when pulling vacuum.
It seems to me it comes from the left front hub.
IF I switch 2H to 4A the noise stops and smooth sailing... I leave it like that for a few minutes and switch back to 2H and it's fine for a while and then
we go through the whole thing again. After a bunch of this activity, it seems to stop completely and we finish our journey.
I looked through the previous owner's service reciepts and there is a left front hub service just before he sold the vehicle.
It says: (In French) 2H chatter problem and they replaced a solenoid? -> Lock gauche selenoid du 4x4 en trouble P.C. remplacer lock + selenoid
Road test OK.
It's impossible to test drive this issue because it takes 2hrs of highway speeds pulling weight to produce the problem.
What is it actually doing when I swith 2H to 4A?
Is this a vacuum leak or electronics or locking hub issue?
I have heard FORD has a LOT of problems with this stuff on F150 & EXPY - the mechanics I taled to said: start replacing stuff until it stops doing it!