Good afternoon chaps & chapesses

 

this morning after lifting off to slow for a roundabout (crazy I know but that's just me) the engine revs raised to about 3750rpm and no increase in speed so clearly no gear engaged. Revs died away and then gear engaged very odd . Happened twice in the space of 20 minutes .It's a 184 tdi 50k miles any ideas ? Was in D mode 

Edited 16 February, 20179 yr by johnrowley

Not experienced anything of the like with mine. Keep an eye on it and get it checked out if it does it again. A stitch in time and all that jazz.

 

Gaz

Early signs of mechatronics failure. It's usually the shift solenoids that fail. Skoda will only supply a new mechatronics unit, but there are specialists who can rebuild them. It can be due to other gearbox issues but this is the most common. 

^^^ Before thoughts of 'Getting it sorted and specialists'.

 

?

How old is the car, how many miles, has it still got Manufacturers or any Warranty, and has the DSG been serviced yet or due an Oil change.

Diagnosis is the first thing, any fault codes logged, then a visual inspection etc.

 

Something odd about 'Recall Actions' recently on 7 Speed DSG,  there are some members with '6 speed wet clutch that have been told wrongly or rightly there is an update.

http://briskoda.net/forums/topic/424440-dsg-6-speed-campaign

The latest confusing and not widely yet 'explained' 7 speed (DQ200) service campaign.

http://briskoda.net/forums/topic/422718-rapid-recall-dsg

 

Edited 16 February, 20179 yr by Offski

2015 50k miles still in warranty - dsg not been serviced as far as I know 

Well it is overdue is it not?

14 minutes ago, Offski said:

Well it is overdue is it not?

 

Due service in 4K miles it's on variable

Not much cope if the VW Group Service / Schedule on the DSG Oil & Filter change is due at 40,000 miles, 

but it is their Warranty so for them to suck it in and deal with their very unusual Servicing Schedules for Engine Oil/ Filter services out of sink with DSG Servicing.

 

Best start a 'Fault report' now with a Main Dealership, and have them look see.

3 hours ago, johnrowley said:

Good afternoon chaps & chapesses

 

this morning after lifting off to slow for a roundabout (crazy I know but that's just me) the engine revs raised to about 3750rpm and no increase in speed so clearly no gear engaged. Revs died away and then gear engaged very odd . Happened twice in the space of 20 minutes .It's a 184 tdi 50k miles any ideas ? Was in D mode 

With it being a dsg I would have thought this was just engine braking? You say after lifting off to slow for a roundabout, so I assume you mean the throttle, revs will increase as the dsg selects a lower gear to help with engine braking, Why would there be any Increse in speed unless you hit the throttle?.

 

No doubt I am not reading correctly what you have written, but if I have then I don't understand what you are saying the car or dsg box did incorrectly.

Edited 16 February, 20179 yr by POWYSWALES
Edit

2 hours ago, POWYSWALES said:

With it being a dsg I would have thought this was just engine braking? You say after lifting off to slow for a roundabout, so I assume you mean the throttle, revs will increase as the dsg selects a lower gear to help with engine braking, Why would there be any Increse in speed unless you hit the throttle?.

 

No doubt I am not reading correctly what you have written, but if I have then I don't understand what you are saying the car or dsg box did incorrectly.

 

hi powyswales

 

coming up to a roundabout, lift off the throttle, engine suddenly revs up, much more than a natural downshift and with no drive to the wheels, just coasting. then as the revs drop i feel the gear engage and provide engine braking at that time

 

hope thats clearer. the important bit as i see it is that when the revs rose it felt as though the care was coasting - effectively in neutral, no gear engaged. if a gear had been engaged then we wwould have ben whizzing off at great speed! no i didnt hit the throttle as it would have accelerated away 

 

 

22 minutes ago, johnrowley said:

 

hi powyswales

 

coming up to a roundabout, lift off the throttle, engine suddenly revs up, much more than a natural downshift and with no drive to the wheels, just coasting. then as the revs drop i feel the gear engage and provide engine braking at that time

 

hope thats clearer. the important bit as i see it is that when the revs rose it felt as though the care was coasting - effectively in neutral, no gear engaged. if a gear had been engaged then we wwould have ben whizzing off at great speed! no i didnt hit the throttle as it would have accelerated away 

 

 

If it happens again, try shifting down with the paddles, maybe try driving manually sometimes?

 

DC

I have no experience with this, but from an engineering perspective, this sounds like the gear changes are a little slow (mechatronics) due to whatever issue/service due/old oil, etc, etc.... and the ECU is just revving the engine up a bit to rev-match for the expected gear change, but the gear change is just too slow - hence the revs rising much higher than they would have if the gear change occured in milliseconds, instead of taking several seconds.

So as above. At 50k miles your gearbox should have had an oil and filter change at 40k miles (this is separate to the variable service and needs doing at 40k miles regardless).

 

Does your car have the coasting function? Where you lift off the throttle and it disengages drive to coast rather than engine braking?

 

I seem to recall there was an issue with certain cars with a bug in the software to do with the coasting that they fixed with an update. Has your car had this update applied?

1 minute ago, Phil-E said:

So as above. At 50k miles your gearbox should have had an oil and filter change at 40k miles (this is separate to the variable service and needs doing at 40k miles regardless).

 

Does your car have the coasting function? Where you lift off the throttle and it disengages drive to coast rather than engine braking?

 

I seem to recall there was an issue with certain cars with a bug in the software to do with the coasting that they fixed with an update. Has your car had this update applied?

 

only coasts in Eco not in D or S , was in D at the time

 

no software update for the dsg