Question about Ford F-150
Have a black vacuum line thats between the battery n firewall that is smaller than the other 4 in that area and is not connected to anything. I highly doubt that f150's have and exaust for the vacuum system like an air equipped truck or trailer so it must hookin somewhere. Been high and low in there, whereever i could reach and cannot find a port anywhere. Has a longtime friend of mine who is a well known car guy stumped also.
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Posted on Jan 02, 2017
I have recently had this problem with a customer. It seems the 4x4 low will only engage in neutral with the brake applied. And also check fuse. Then select drive and you will feel it lock in. Don't "goose" the fuel when attempting this.
Posted on Jan 14, 2009
look on fire wall pass. side you will see 2 parts with vacume lines attached 99 percent of the time that is what went i had the same problem
Posted on Feb 01, 2009
your problem is probably the front axle solenoid. it is in the center of the truck on the front axle and it is really easy to change. Simply unplug the electrical connector and use a wrench to loosen it. Spin it counter clockwise until it comes out........Manual hubs i believe are not available for this truck but i think there is a aftermarket cable you can buy and install to lock the front diff in.
Posted on Feb 17, 2009
Your front hubs are automatic locking hubs, and the gears are hard nylon. These hubs break very easily, therefore causing you to lose your front wheel drive in 4 high, or 4 low. If you replace the hubs with "WARN (name brand) " manual locking hubs, you will never have the issue again. Of course, you will have to get out of the truck and manually lock the hubs, but they are metal gears, and much more durable. I've personally seen the issue several times, and changing the hubs has resolved the issue every time.
Posted on May 01, 2009
Encoder motor located on the transfer case is usually the problem. It is the motor that shifts the transfer case.
Posted on Sep 28, 2009
Testimonial: "Will look into this and report .Thanks so much"
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