Thread: P38 gearbox troubles

Hi Willem,

Did they change the fluid when they serviced the trans ?

I wonder if it was the correct fluid ? Also, was it the same as what you had before - when changing the fluid they would have need to do to some length to do a complete change rather than a partial change that you do when you just drain and fill it and perhaps there is an incompatability ?

Cheers, Steve.

Originally Posted by green_rangie

Hi Willem,

Did they change the fluid when they serviced the trans ?

I wonder if it was the correct fluid ? Also, was it the same as what you had before - when changing the fluid they would have need to do to some length to do a complete change rather than a partial change that you do when you just drain and fill it and perhaps there is an incompatability ?

Cheers, Steve.

Thanks, Steve, for your response.

I'll check that out, but I do think the problem was already there before the service. I think its an electrical/ electronic problem ... but I don't know.

Willem

Originally Posted by willem

Yesterday when going up a hill coming out of a roundabout the gearbox seemed to 'declutch and reclutch' three times in quick succession.

Tell your trans people to RECHECK the level of trans fluid ....


If it all settled down on level ground ... then it sounds as tho the trans pump got a heap of air, rather than fluid ....




By the way ... a pump sucking air will = shagged auto pump, etc

Mike

Hi Willem,

Following on from Mike 90 RR

Do you know if they replaced the trans filter?

I was having trouble with my '00 P38 not selecting gears properly last year and it turned out to be a split O-Ring on the trans filter - this was causing the fluid to become airated and resulted in delayed/harsh gear selection...

Paul

Thanks for the input guys.

Because the problem pre-existed the auto trans service I don't think the service was the problem. Also, changing gear is not a problem - it changes as it should and when it should.

I was going up a long moderate steep hill this morning at relatively low speed - about 60-70 kmh - when it did the apparent declutch/ reclutch thing twice, separated by about half a second. I noticed that each time it did it the 'check engine' light came on momentarily. So I'm beginning to wonder if its possibly an engine problem rather than a gearbox problem.

Other than this the car is running well.

Willem

I havn't really had a look to see what kind of switch the RR's have, but it could be something in your kickdown switch on the gearbox. If it's shorting out or reading the wrong value it may be try to downshift for you, then realize it doesnt need to and try and re-engage the belts.
Dont have my RAVE cd with me so cant have a look.

As metioned.
If its just had a service,the levels are correct,the seating/seal of the filter needs to be looked at asap.
Goodluck
Andrew

Hey Willem, Is it possible that engine electronics are the cause and not the trans? Does the behaviour occur at a set rev point and continue until you back off? Perhaps it feels a little like spark is being interrupted/breaking down? Mine behaved like all of that not too long ago. It turned out to be the crank angle sensor banging on something and trying to eat/destroy itself. Hoo-Roo!