Date: Wed, 30 Oct 2002 23:26:05 +0100 From: Robert Brown <rjbnopsamripnetvvv.se> Subject: Re: '98 900SE premature 2nd gear synchro failure
Kevin Walsh wrote: > Robert, > > Normally, I do not get the same grinding noise going from first to third; > unless, I am shifting agressively/quickly. I can shift from first to second > and from third to second with little to no noise if I am *very* careful and > patient, although, sometimes my best attempts fail. Shifting between all > other gears (including reverse) is noise free. Changes in outdoor > temperature don't seem to help or hurt matters either. On the positive side, > it hasn't gotten any worse. It's hard to know at this distance ;-) but I think that part of the key still is finding out if double-declutching alleviates the problem. If it helps, then it could well be a synchro ring issue. But then synchro failure isn't usually so apparent going upwards through the box (1-2-3 ..). it's going the other way that synchro problems get noticed. > > > I believe the problem was likely was caused by heat as the temperature that > day was at or above 32 degrees C (90 F.). Immediately prior to the > stop-start driving, I was maintaining 115-130 kph (70-80 mph) mostly > non-stop for 3.5 hours. I don't know if the following information is > significant, but, my car was fully loaded with clothes, camping gear, > bicycles and my girlfriend. (my girlfriend is nearby and vehemently denies > any culpability) Yes it is. Girlfriends can cause the best machinery to do the weirdest things even just by them being there . . . Stop-and go shouldn't be a problem for anything else but possibly the clutch. A gearbox in good working order should stand up to those kinds of conditions no trouble at all. So no, you shouldn't need to change the way you drive, once the gearbox is fixed that is. Let¥s hope that someone else knowing more than I do, about this, will post something. Regards, Robert
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