Hey all,
Was driving on the freeway today, and between 105--> 125km/h i could hear a "ringing" sound, it was a whirring ringing, sorta a reverberating ringing... It was worse under load, i couldn't hear it when backing off, only when i put the foot on, i thought i could *almost* hear it in 4th at the same speed...... it was worst aat 120km/h in 5th under load.....i have a manual tranny and it's an m47, whirs a little in 3rd, a tincy bit in 1st and 2nd (not noticable).... Anyway, can anyone help?!
TIA<
Az

If you hear it in fourth gear, you can write it off to something other than the typical M47 whirring and howling. The 4th gear indicates it's something likely independent of the transmission, eithr clutch, driveline, rear axle, or carrier bearing. If you don't/can't hear it in fourth gear, but hear it in 5th and perhaps other gears, then it's more likely the typical M47 noise. Since the 5th gear is kind of an afterthought on the M47, it can be an independent noise coming right from that assembly. See if it continues or if it was perhaps an external noise.
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Chris Herbst, near Chicago, IL. 93 940, 91 240, 90 240, 88 740, 87 240