2009 2.0 Hdi Auto Not Changing When Lower Revs > 2500Rpm ?

[roffey]

Recently the auto, although functioning correctly at lower rpm and smooth driving, will stay in gear from 4th onwards when accelerating more heavily. If I use the stick change to 5th, then back to auto, it will remain in 5th no matter what. Have to use stick to get to 6th. It seems if the rpm drops to below 2000rpm then up again, it will go through all gears. Slow driving again it reverts to normal. Is there a sensor somewhere which controls this?  Software glitch?

A simple diagnostic gadget is not registering any fault code.( It did show up injector probs when they occurred). Any help appreciated.

 

 

 

[qman3428]

My 2009 2.0 hdi also developed a gear change issue, though in my case it was, here's third, you dont get anything else. The main dealer was fully aware of the issue and changed the engine fuse box (under warranty when it happened). The problem was cured instantly and has not come back.

[roffey]

Yes, I suffered that early on from new, and they changed it as a service update. What puzzles me is the dynamics of the characteristics. Maybe it has learnt and decided that I don't really want to change gear anyway!

[roffey]

Well, after a sequence of events, the autobox is back to normal, changing gears as it should, regardless of the degree of acceleration.

The sequence? well, here goes.

 

1 When it's time to put the clocks back, put the time 1 hour forward instead. ( if not, wait a year )

 

2 Borrow an air pump from a friend. Repair it by pulling the lever head apart. Use a drawing pin, after putting it in a drill and using a power file to reduce the head   diameter to 7.7mm, and then crimping a 10mm length of 316 stainless steel thin walled (2.35mm dia) tube to it's spike. This replaces the missing tyre valve release pin and allows correct air pump operation in order to get the rear offside tyre up to the correct pressure.

 

3 Observe dripping condensate water from the air conditioning unit releasing from the front offside front wheel trim area. After this has occurred, turn the a/c to the off position. 

 

4 wait until it's time to leave work, and then do so.

 

5 Travel in an orderly driving style for 2 miles, then adjust the clock time 2 hrs back. (This will synchronise the cars time to the rest of the UK).

 

6 Wait until it's safe to accelerate at an increased rate ( ie motorway) and the gearbox correct behaviour memory will have been restored.

 

For some, a different sequence of events might be necessary, ie (in a different order), but this worked for me.

 

As ever, happy to help when I can!  :)