|
1996 Ford Explorer Vibration - Drive Train & Driveline
Question: My 96 Ford Explorer with a 4.0 L OHV, Auto tranny and control Trac 4WD has a high frequency vibration that can be heard and felt in the seat and body any time the engine rpm is over 2000 and the engine is loaded. The frequency is about 50 to 100 hz and is independent of vehicle speed and occurs in any gear when accelerating OR even when stopped in drive with the brakes locked and the engine throttled up to 2500 rpm. There is no vibration when coasting at closed throttle in any gear. It is annoying. Also, and probably unrelated, the used car dealer I bought from just rebuilt the rear end before I bought it. I visually and hand inspected the front crankshaft pully/damper and it appears is good condition. All the motor mounts appear solid and the exhaust system is well sprung in rubber hangars. I do feel a slight "similiar" vibration in the engine while in park both with and without the serpentine belt in place, but I did not load the engine without the belt off. All the belt driven accessories appear smooth and balanced when rotated by hand. I'm stumpted.
Thanks-Jerry in Kingston, WA
Here's How To Get Guaranteed Solutions In Minutes
|
|
Technican: Hi;
The only thing that comes to mind would be the torque converter. unfortunately on fords you can not take it loose and run the engine due to the fact that it has studs in it and will not disengage completely off the flywheel. Pinpointing it would be tricky. Might want to see if a transmission shop might help you out on it. .
Owner: The answer from this mechanic may or may not be valid. I replied to this mechanics initial answer with NEW INFORMATION and have not heard a followup answer. I either need to reword my question or add the same NEW INFORMATION to other mechanics. I don't know what to do to proceed from here.
Thanks-Jerry
Technican: Hi;
I did not receive additional information. If you have any please post it so that I can take a look at it and respond. Thanks.
Owner: Les,
NEW. Have found the source of the vibration. The factory Damper weights on the back of the BW 44-05 Transfer case are vibrating any time the engine rpm gets close to 2500. This occurs in Park or when driving and is a little more severe when accelerating. Do you know why they are there? Can they be removed without causing a worse problem?
Technican: Hi;
It can be removed and see if the vibration lightens up. It is there for the purpose of eliminating vibrations coming out of the transfer case. You might want to consider replacing it. You should be able to pick one up at a salvage yard or the dealer. . Here's How To Get Guaranteed Solutions In Minutes
|
|
|
