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Old 03-18-2011, 10:06 AM   #10
Pete_89T2
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Quote:
Originally Posted by TitaniumTT View Post
So at 65 in forth there's no vibs, but at 65 in 5th there is vibes? Could be harmonics, could be tranny
Noise & vibes in every gear except 4th sounds like shot tranny bearings to me. When the trans in my '85 GSL-SE was on its way out, that's basically what it was doing. Fix was a tranny rebuild. 4th is a 1-to-1 ratio, which explains why the noise/vibes change dramatically. In my FB, it sounded like marbles rattling around in a coffee can in all gears except 4th, with a noticable change in driveline vibration that you could feel if you pay attention to it. Symptom was more noise than vibration though, however the FB didn't have an independent rear suspension like the FC does, so the noise/vibe characteristics would likely be different.
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