Folks,
I can't believe the number of threads being posted relating to the tranny. I didn't realise until after I posted mine and then started looking around the forum. And a lot of them pretty similar.
I installed a new battery on Saturday. This was not motivated in any way by my tranny problem, but I had left the interior light on a month or so ago and the battery went flat. I had to jump start it and while since then it seemed to be keeping its charge ok, I was unsure how old it was and wanted to change it for comfort.
The one I took out was some sort of brand x job. Definately not a BMW original and I suspect may be a cheqp option someone took in the past before I owned the car. The one I put in was a very expensive one, top of the range from a very well known and trusted brand. It also has much more juice .... 100Ah versus the 85Ah thing I took out. For comparison the one in my wifes Toyota puts out 60Ah, so it's a formidable battery.
Anyway, oddly enough, I am not getting that funny tranny judder any more. And the car seems more willing to get up and go when I push the accelerator peddle. I was kinda stunned to be honest ..... I hadn't anticipated this effect from changing the battery. I am still keeping the situation very much under observation, but there is a definate change in how the car is behaving since the new battery went in.
So, does it make any sense to anyone that a weak battery might cause such a drivability problem ?
I should mention that I purposefully took the old battery out and didn't install the new one for at least 30 minutes. I figured this might reset some systems in the car ..... though I couldn't tell you what systems. I gave it a go anyway.
So I'll be back with progress and whatever observations I notice.
Finally, my daughter pushed up her first tooth today. Hurray !!!
