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E34 (1989 - 1995)

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  #26  
Old 12-13-2012, 02:48 AM
robertobaggio20 robertobaggio20 is offline
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I think its important to read the posts over here carefully :

http://www.bavarian-board.co.uk/foru...telltale-light

It seems like some transmission issues could be caused by other unrelated problems.

Jo, I would like you to clean your throttle position switch. Its a little switch with a connector that is right to the right of the throttle body. Unplug, clean with electrical contact cleaner, blow dry, add dieletric grease to both switch and connector, replug, say a hail mary, then start the car and see if the problem remains.

This is an extremely long shot at this stage of course but what the hell the tranny seems to have alot of weird **** going on judging by the forum posts above, so anything could be possible.

The position of the tps (throttle position sensor) can also be found in pictures within the pages of the bentley manual.

Last edited by robertobaggio20; 12-13-2012 at 02:50 AM.
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  #27  
Old 12-13-2012, 05:52 AM
snowsled7 snowsled7 is offline
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Quote:
Originally Posted by robertobaggio20 View Post
So are you speculating that the oil pump in the tranny is busted ? If thats the case then all gear shifts should be affected not just reverse.

OP (original poster), please begin making enquiries for a rebuilt valve body or tranny, and a good used tranny, plus labour and time required. Call a few places and get a baseline. Also check the pricing for a full valve body overhaul with one solenoid changed, or just a valve body removal, general cleanup and reinstallation with one or two solenoids changed. I will try to get you some info in parallel need to check that out for my tranny too.
After 177k miles the trans pump is most certainly worn.

As I read, it doesn't seem the OP has even verified the trans fluid level

Low fluid level... if it is still low, this is very likely the problem. We have gone on a wild goose chase because the simplest thing hasn't been checked yet.
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  #28  
Old 12-13-2012, 07:23 AM
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BMR_LVR BMR_LVR is offline
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Quote:
Originally Posted by robertobaggio20 View Post
Steve sir if you can spare a few minutes, would you mind detailing how the reverse gear in your former e34 went out, the leadup to it, and any advice you received from techs about that which you feel is correct. Perhaps it can help us understand this a bit better.
Well, let me see if I can remember. The car had 256K on the original transmission. It was regularly serviced by a good independent mechanic (this was my pre-diy days for BMW).

It began as follows. In the mornings upon first start up, I would place the car in reverse and there was just a slight delay in gear engagement at first ... perhaps a 2-3 second delay. Once warmed up, it would engage fine. This went on for maybe a week or so. It was quite some time ago so I am unclear on the time frames. The problem progressively got worse with the delays lasting as long as up to 10 seconds. Finally, it would just not go into reverse at all. All forward gears worked fine. I tried Lucas transmission treatment prior to it letting go completely and don't recall seeing any improvement.

I was told by the indy mech that this was a known problem with these transmissions and would need to be rebuilt or replaced. I'm sorry but I don't remember what specifically he said was the actual problem. I don't have enough knowledge of transmission internals to even take a stab at it.

The car also needed a new aux fan and I was told that the combined repair would be approximately $4300, so I just salvaged it for $600 If I had only known then what I know now. I would likely have done a 5 speed swap and changed the aux fan myself.

I can't speculate on what OP's problem is (due to my limited knowledge of the tranny internals), but I agree that a proper fluid level check is paramount, and if the fluid level is correct, then I agree with BMWFF about going to a transmission specialist rather than a BMW mechanic. Looking back, my indy mech may have just not wanted to mess with it or he may have been giving me some good fatherly advice based on his experience.
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Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #29  
Old 12-13-2012, 07:44 AM
robertobaggio20 robertobaggio20 is offline
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Thanks for the update Steve. And the OP has stated that she topped up fluid and has been accused of overfilling the tranny.
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  #30  
Old 12-14-2012, 07:12 AM
snowsled7 snowsled7 is offline
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Quote:
Originally Posted by jeaux View Post
Ok Roberto...sounds like a very expensive path lays ahead of me...but I will start checking. I am so hoping that deleting error codes and making sure I have the proper trans fluid level will miraculously solve the issue...you never know....
But I do look forward to your parallel research.
thanks,
joanne

I belive this was the latest post from the OP. You tell me, it looks like the proper level inspection is still pending to me.

Bobby, better watch how you twist my words. I mentioned that overfilling can be an issue as well. At no time has anyone insinuated that she overfilled the trans.

Everyone agrees that a proper fluid level inspection and correction is FIRST. No point in any other discussion until this is done.

My gut feeling is that the trans is failing.

Good Luck
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  #31  
Old 12-14-2012, 07:33 AM
robertobaggio20 robertobaggio20 is offline
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If you care to read the op's op...you'll find the stuff about fluid checks and overfilling insinuations.

The tranny is suspect....i wonder why the fluid was a little low to begin with.
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  #32  
Old 12-14-2012, 08:41 AM
jeaux jeaux is offline
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Hi all!
Trans fluid level has been checked when engine warm, it's perfect, and mechanic said fluid "looks clean". As of yesterday morning it surprisingly reversed fine even when engine cold, we will see what today brings. Inspection forthcoming!
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  #33  
Old 12-14-2012, 01:11 PM
jeaux jeaux is offline
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Update: problem again this morning, after about a minute, resolved. Will update again soon.
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  #34  
Old 12-14-2012, 06:34 PM
snowsled7 snowsled7 is offline
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Quote:
Originally Posted by robertobaggio20 View Post
If you care to read the op's op...you'll find the stuff about fluid checks and overfilling insinuations.

The tranny is suspect....i wonder why the fluid was a little low to begin with.
It would hardly be uncommon for a car of this age to have leaking trans cooler lines. Over time it adds up to a low fluid situation and probably a rust free undercarrige!

Sounds like the fluid is OK, for sure now.

Time to start planning for a trans replacement, it is giving you a warning, you are on borrowed time...
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  #35  
Old 12-17-2012, 05:55 PM
jeaux jeaux is offline
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Update from me, the OP.
It's been so rainy and cold I haven't done anything but some research, wait for the car to get warm every morning and cautiously put in reverse...it's been ok, until today when reverse was still weird even after the car was warm, and then first and second gear sounded terrible, increased rpm's and for the first time 'transmission program' error message. Pulled over and disconnected battery (still hoping it was some electrical issue spawned from the jump a couple of weeks ago-when this all started- and after 15 mins it drove fine (except reverse) and no message, and took it to the shop. They checked fluid and this time it was a little low. Reverse was fine at that point and they told me to come back if there were problems as they were busy until wednesday. A friend and I took for a drive, and it seemed to slip a little bit (to my friend, seemed fine to me) but when parked the reverse issue was back. We took it back to the shop and all the mechanics gathered round with sad faces as we do fear the worst....
So strange that there was no sign/symptoms of tranny problems before that fateful jump!
I will update you later in the week...and thanks everyone for your concern and taking the time to write on this thread, it's much appreciated.
A sad pedestrian,
joanne
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  #36  
Old 12-17-2012, 06:01 PM
jeaux jeaux is offline
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p.s. I will let the bmw place read the codes and then take the advice above about going to a tranny specialist. I am listening!
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  #37  
Old 12-17-2012, 06:03 PM
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BMR_LVR BMR_LVR is offline
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Sounds just like mine did. Unfortunately, it doesn't sound good to me. I think it's likely time for a rebuild or 5 speed swap.
__________________
Most problems are usually something simple !

Quote:
Originally Posted by noego View Post
It's Deja Poo - as in, I've heard this **** before.
Steve

Calypso Red 1992 525i with 200K miles

1991 735i - Sold
1992 525i - Sold
1995 325is - Sold
2000 528i - Sold

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  #38  
Old 12-17-2012, 06:12 PM
jeaux jeaux is offline
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Yes, I am going to start calling around and pricing things as I am now on foot so can't get to work at the moment! I think I need a shot of whiskey first however to calm my nerves
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  #39  
Old 12-17-2012, 06:22 PM
jeaux jeaux is offline
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Hi BMWFF...the 'trans program' light come on today and just briefly. I pulled over and disconnected the battery for 15 mins and then restarted and it never came on again, and drove ok except reverse. But it scared me enough to take it to the shop. Is that what you mean by tranny slip light? The place I took it to has done a lot of work on it the past 3 years, they are 'bmw specialists', but not dealers. They are planning to read codes this wednesday.
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