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my exepedition makes a howling noise going straight gets worse turing to left replaced tires and front bearings had two shops look at it and they hear it but don't know what it is any ideas would be great.
I replaced the hubs first I was told the bearings were bad didn't help
I was then told it was tires needless to say that didn't work either
noticed a little play where the front axle goes into the differential up and down movement on both sides and in and out movement on the passenger
side.
I replaced the hubs first I was told the bearings were bad didn't help
I was then told it was tires needless to say that didn't work either
noticed a little play where the front axle goes into the differential up and down movement on both sides and in and out movement on the passenger
side.
thanks for the help
The more information you provide the better the chance of recieving some accurate diagnostic help or advice. You have not yet told us what vehicle you have problems with and as we are not mind readers there is not much anyone can do. We do know it is an Expedition or Navigator but what drivetrain does it have?
Just because the wheel bearings are new does not mean you could have gotten a bad bearing. If the bearings were installed at a shop take it back because your initial complaint was not fixed to your satisfaction. Did the noise change at all after the bearings were replaced? Who is doing the diagnostic work? Even an entry level mechanic should be able to properly diagnose a wheel bearing or tire noise issue. You need to find a new mechanic that does not throw parts at it and hopes for the best, we call that the shotgun approach.
Well it is hard the give advice when I am not sure what I am giving advice for, but I give it a shot. I would get the vehicle off the ground, by jack or lift, doesn't matter. The first thing to do is leave the tires on and try to wiggle them side to side and towards you and away from you. If there is allot of excessive play then there is probably a bad bearing. If that is ok, then I would take off the wheel and inspect each CV axel in the front of the truck, where it connects to the diff and the hubs. Then if those are ok I would move on to the differentials. Check the fluid in both the front and the back; just pull out the fill plug in both diffs. Again if those are fine I would then check the u joints on the driveshafts, this is highly unlikely to cause this kind of problem but its worth to check. This is just a general way to approach a driveline noise. I might have missed a couple of things but anyway, I hope this helps.
howling like a tornado siren and higher pitched as speed increases, coming from the rear, does not matter if it's getting gas or coasting downhill....
Check your differential for oil. That is the most likely problem, it could still be worn out if it's full. If it's empty your dif is probably shot. Then check your wheel bearings for play as already explained above.
Check your differential for oil. That is the most likely problem, it could still be worn out if it's full. If it's empty your dif is probably shot. Then check your wheel bearings for play as already explained above.
You don't have snow tires on it, do you?
99 Navi - 101k miles. I had a small leak in the rear diff and this doesn't get driven more than 3-5k miles/year. I'm going in tomorrow for a change and see if it hopefully isn't too late.
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