Thread: More 5L40E problems

Hi Gary

I saw this on EBay and thought it could come in handy for you.

http://pages.ebay.com/link/?nav=item...d=181401172401

Cheap even with courier cost!

Thanks Steinzy

Already have oil & filter kit.

Gary

Hmmmmmmmmmm interesting.

If Rhys had put this into the box,I would buy it,but seeing as he used Valvoline (you know what I mean ) Think I'll stick with that.

Thanks all the same..

cheers

Hi Gary,
Think that post about the Texaco fluid was for you not me.
It is a cheap buy for that price tho.

cheers

Originally Posted by Laurie

Garry
Have you dropped the Trans-fluid yet ? If not ! I don't know the code, but the pressure regulator solenoid would give similar symptons if it's faulty. Your auto is the first 05 variant that has had trouble that I'm aware of; so I would check every option before considering a re-build.
Hope it is this simple

Laurie

Agree with Laurie

When the pan comes off there will still be a bit of fluid in it. Carefully check for debris. Also have a smell of the fluid - does it have a burnt smell.

If there are no particles in the fluid (there will be fine material stuck to the magnet, this is normal but there shouldn't be much - mine was like a smudgy paste over the magnet), then the regulator is a fair bet. Get those codes deciphered - send them to GAP.

http://www.aulro.com/afvb/2065831-post5.html

Actually scratch that – maybe. The above post was typed this morning before below happened.

According to the VIN listing on FFRR my car is after the change. It has been serviced and had clean fluid each time – My transmission hell started today...

As usually the car was silky smooth today. Drove through the city then down western freeway, at about 85km/h (top gear TC locked) I planted the foot to merge into the right lane and revs went up disproportionately to speed.mmm, crap not done that before.

Continued on to my appointment, car is running perfectly no sign of issues, changing beautifully, TC engagement/disengagement like silk. On the way back out I replicated what I was now sure is TC lockup slippage a couple times and I decided to drop into the transmission specialist which I’m not far from. I’m not often over that side of town, got a bit of time see what he says, they do all of the BMW dealership work. He has a bit on, go find some lunch come back in hour or so, we can look at it with you then? No worries, I go feed myself at the industrial estate food outlet – piece of humble pie – would you like a drink with that? Yeah but something stronger than you sell.

I go back. He plugs in – no faults. He goes for a drive and returns immediately “yep, it’s slipping”. He then proceed to tell me what goes wrong with them (exactly what we have discussed here), it will be pressure related. Drain some fluid - bit off colour but not black, no material, he rates it as clean – “you’ve caught it early, drive it further and it will self destruct” – won’t know the full extent until Monday pm once it is stripped.

I drive off in a loaner thinking this day has gone to pot, think I need to go pick up my gear and go kiting – so I did...

Stock TC lock up clutch in these is way too small surface area for adequate lifespan, if the line pressure drops off even a little then you will lose 'clamping force', same as a manual trans and a clutch pressure plate issue. The big issue with auto transmissions is the self destruction scenario where low pressure causes slippage which causes blocked filter due to clutch material in the oil, which causes more slippage due to low pressures etc etc etc . The big picture here is that the 5l40E is just hopelessly outgunned by that glorious 3 litre 6....


JC

Have already sent codes to GAP . But couldn't really help. Just said it was of a mechanical nature

Have let it sit for a few days with sump on before trying to drain some more oil out. Did smell a bit burnt.

Gary