Question about 2004 Ford F150
When in 2wd the front end makes a noise like a ratchet turning backwardswhen I put it in 4wd it stops.this truck has 60400 miles on it.thanks
Posted by Anonymous on
I had this problem too. It could be a few different things but all the same result, loss of vacuum causing the 4wd to start to engage but not completely. The teeth on the clutch in the locking hub are grinding on the spline of the cv shaft as you lose vacuum and it tries to go into 4wd which is the default if everything would fail. 1st thing could be either of the 4wd locking hubs (approx $200 ea., located on the back side of each front spindle), check them to make sure the vacuum lines on the top of it are still attached these require the brakes, tie rod and upper ball joint to be removed if replacing, 2nd is the 4wd vacuum actuator (approx. $40 located on the firewall passenger side behind the battery) Ford has replaced this part with a modified one that has a little roof on it to stop the water that drips of the hood when it rains and makes it short out, this is very easy to replace (2 nuts) and last if both the above are working just fine would be to trace all the vacuum lines for a break unfortunately it is a 6-8 foot line for all the front 4wd and it costs approx. $100 if you have to replace. Not very difficult just time consuming. Hope some or all of this helps.
Posted on Jun 05, 2010
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Posted on Jan 02, 2017
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Jun 26, 2017 | Hyundai Cars & Trucks
Sounds like you have a wheel bearing problem. Jack up the front end so wheels are off the ground. put your hand on the spring on the strut then turn the wheel with the other hand. If the bearing is bad you will feel the vibration/rough spot in the spring. Noise will get louder or diminish when you peed up or slow down.
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