Lincoln Repair Questions? Ask a Mechanic for Answers ASAP
Welcome, I'm Chris (aka Moose), my normal schedule online is around lunch and after dinner till early morning.
Normally a swerve associated noise is going to be caused by a wheel bearing starting to go bad. If you think it may be related to read design or a tire. Try to pinpoint which corner is worse then rotate the tires and see if it moves to another wheel. Normally a swerve to the left points to a RF wheel bearing with the issue for example.
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Thanks for using Just Answer, Chris
The differential will not be affected by swerving. It would make a noise based on applying throttle or coasting around 40-60 mph. A wheel bearing that is not in horrible shape is going to require a stethoscope to listen to it while the wheel is spinning at least 15 mph. A good sound would be like your ear close to a ceiling fan. A bad noise would be like hearing a blender from about 20 ft away.
You would run it in 4wd and if its 2wd then use a drill with a hole saw in it to hold it up to the tread and spin the wheel.
Hello again Chris here,