If you still have the E39 530i, try changing out your transmission fluid to a good synthetic like Redline or Royal Purple. Made a world of difference for me as the shifting is now very, very smooth. Good Luck!
"bfd" wrote
Yeah, did just that recently - put in RP Synchromax when I hit 40k miles a month ago. Unfortunately, it made no difference. And I wasn't really expecting it to - afterall, the problem is with the clutch engagement and not with the transmission itself.
Pete
Just show what education will do.
Once upon a time fancy names were given to all types of crap. Harley Davidson "Duo-Glide" Eh? 2 x glide - nice name but means nothing. Chrysler "FIREPOWER" nice name but what exactly is different from any other internal combustion engine now HEMI means something.
AUTOMATIC means it does it by itself - and auto transmission cannot think it can only change gear by itself. Ok now we have all sorts of sensors that feed the electronics all kinds of info and it's getting to be automatic but not in 1956.
Education has given us the means to question these snake-oil merchants.
However, a name is a name and that is what it is known by. Is the "induction" system before or after the supercharger? Should it really be called the pressure feed system if the cylinder head side and induction in front of the blower - there is another. Supercharger also known as Blower - one is showroom speak and on the advert the other is bar room speak or drag-strip speak. So what's a "Jimmy" (see above) (GMC Supercharger used on 2T diesels initially)
Let's stop nit picking but then a rocker panel is a sill panel a boot is a trunk a hood is a bonnet a "firewall" is only for American cars that always seem to catch fire in any minor accident in the movies whereas the British have no need for firewalls except on a computer just scuttles (coz they look like the old fashioned coal bucket on the early cars especially the Ford T) and fontwell. Fenders go in front of a fire to stop the coal rolling onto a carpet but bumpers are on the front and rear on a car to bump the next car.
Come on guys - lets have some more anomalies...........
Even in 1956 a Borg-Warner auto box did quite a reasonable job of changing gear.
The threshold levels etc. are to a considerable extent predetermined, but even in a purely hydraulic auto box the gearbox selects the gear using a combination of
input revs output revs hydraulic pressure from slip angle in torque converter (relative load) any user settings (gate, kickdown etc.)
basically if the engine is slipping slipping a lot past the gearbox (high revs; low speed) then the gearbox will tend to change down; whereas if the the engine is only slipping a little it tend to change up. Up down thresholds were adjusted by adjusting the spring pressures on the valves.
Some of early sports / economy boxes worked that in sport mode the box reverted to being purely hydraulic with the overdrive top (essentially and electrically operated overdrive) disabled.
In economy mode the ECU knew about throttle settings and engine load etc. and would alter the change up change down points and briefly cut the ignition while the bands engaged to prolong their life and make smoother changes.
Punctuation would be nice, too.. ;-)
DAS
For direct replies replace nospam with schmetterling
Er? I think that's basically what I was saying ------- wasn't it?
Nit picking again - Sorry you don't usually.............
Hugh
... and the message thread takes an unexpected and somewhat nasty turn....
Copuld someone please start a new "alt.redundant-chatter-about-automatic-transmissions" newsgroup?
So would bottom posting.
;-)
Period.
Why? Just set the thread to 'ignore' if you're not interested.
Sheesh.
Isn't that what this is called but shortened to
Still moaning Fred.
Some groups want top posting some want bottom posting - you get it where I feel like putting it as does everyone else.
Fred let me remind you that not everyone in the world is American nor speaks American ENGLISH not even the aliens in Star trek or Stargate neither do you own the newsgroups so it's "Hobson's choice"
Hobson was a man that rented horses and you had to be satisfied with what he gave you not what you wanted - bit like Hertz car rental really!
Snip
Er no you were saying that automatic boxes in 1956 were not worthy of the appellation, when they were, albeit with hydraulic control systems rather than electronic.
It was a joke, Dan.
Sheesh.
I guess you are right because we seem to have this discussion here about every 4-6 months.
If past history is an accurate indicator of future performance, we will soon hear Dave pipe up about how SMG is really just an automatic...
I never "moan" about top vs bottom posting. You must be confusing me with someone else.
Here's my take. When replying to a thread with prior replys, one should reply in kind. In other words, if the first replier top posted, so should the second, and vice versa. Otherwise it makes it too damn hard to read the thread.
The alternative is to "fix" the prior reply order to whatever your preference is.
The alternative alternative is to trim all other replies and only add your own reply where you want it.
The only one I really don't like is top posting a previously bottom posted reply or bottom posting a previously top posted reply. Hence you may see the irony of my bottom posted reply to you? Do you need a smiley face here?
No Mark the weren't. They changed gear according to load and speed as do the electronic versions but neither are AUTOMATIC as they rely on outside influence to do it. A time switch is automatic, breathing is automatic.
The first "auto" boxes arrived pre 50s and were the 2 speed powerglide I think. Did what it was supposed to change gear automatically. It was crude and troublesome but sufficed and was the fore runner of the great advancement we have today - electronically controlled but still hydraulically operated.
Again the only thing they do automatically is change gear the rest is getting close to AI (artificial intelligence) but we aren't quite there yet.
I fitted an auto to a Hot Rod (Mk2 Ford Cortina fitted with 3 litre V6 + BW 35 auto) and really never stopped driving autos. All but one of my cars since 1968 have been automatics -
Hugh
Sir Hugh of Bognor
No! I took it as a cynical and amusing observation.
If it quacks like a duck it's a duck...
MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.