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Ford 2004-2007 F150 4WD Systems
This is for any who has a 2004-2007 Ford F150 4 Wheel Drive Truck.
The truck was making some noise from the left front wheel, kind of like a grinding or bearing noise, also felt like 4wd wasnt working. Had to take it to the dealership.
I just had all the front actuators replaced, vaccum lines cleaned or replaced and the IWE solenoids replaced.
They found that vaccum lines, actuators and solenoids were full of rust and not allowing the 4wd to engage, it runs on vaccum which is controlled by the solenoids opening and allow the diaphram to open.
This is a common problem on these trucks and the new parts are redesigned not to rust out. Seems like any part that low in the axle should of been made not to rust in the first place. Ford knows this but no recall has been made.
These tend to fail around 35 to 40,000 miles, which the warranty only covers to 36K.
Luckily I purchased the extended warranty which goes to 6oK, so I paid the $100 deductible and was on my way.
So if you have one of these trucks I suggest you get it looked at asap, even if its not acting up, you probably wont find out until you go use the 4wd like i did. it didnt engage and i got stuck.
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