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[Marks DTM Calib]

It will surge a bit, but wont be to bad as the torque converter will take most of it....its pruely to help pin point the fault in reality and not ment to be a long term solution. What you have to remember is that the retard function is only for comfort purposes and wasn't present on main stream cars until electronic ignition appeared.

[TheBoy]

It will surge a bit, but wont be to bad as the torque converter will take most of it....its pruely to help pin point the fault in reality and not ment to be a long term solution. What you have to remember is that the retard function is only for comfort purposes and wasn't present on main stream cars until electronic ignition appeared.
 

So if TD tried that and g/box went into limp but not engine, that would imply g/box prob.  So get a snapshot of g/box?

[Marks DTM Calib]

I would be looking at gearbox anyway as the ECU is simply acting upon the message sent to it....i.e. please go into reduced power limp mode.

[Taxi_Driver]

I checked the two fuses and both were ok and securely fitted.....so doesnt appear to be that  

Just come back from local garage.....they have a snapon diag reader. The descriptions are taken from the snapon reader

It read with ign on and engine off for the engine ecu

P0340 Cam sensor incorrect signal
P700 Can bus error
P1700 Can bus error

And for the gearbox ecu

P0727 Can bus error
P1781 Can bus error

We tried to reset all the engine codes and g/b codes which it did, summat the cheapo tech2 couldnt do!!
(cheapo tech2 couldnt get rid off the P0700 code)

We waited for 15 mins and then started the meega with the code reader still plugged in, sure enuf it struggled to start again and EML came on again

Codes were this time

Engine ecu

P0340 cam sensor incorrect signal
P1700 can bus error

G/b ecu

P0727 can bus error
P1781 can bus error

Clearing the codes and trying a restart, it started fine and no codes flagged.

Anybody reckon its worth changing the cam sensor again (I have no proof that vx actually did change it, they said they did during a phone call to their service manager)

Or is P0340 to be expected when starting? altho if so why doesnt it flag it on a 'clean' start?

Their snapon tester seems to be able to do quite a bit including live data stuff.....but not sure if it could reprogram engine ecu to say manual gearbox  :-/

Cheers

[Marks DTM Calib]

No, as I suspected, its pointing towards the CAN bus from gearbox to engine ECU......I wonder if the software in both (and the ABS unit) is the latest and correct....something is buggering up the CAN bus comms......

Its reasonable to assume (or maybe it isnt) that the gearbo and engien ECU are correct and the latest software but, I wonder if the ABS one is......

[Taxi_Driver]

Hmmm.....I remember AA saying that his dealer said his had gearbox faults when they changed his cam sensor, then went away.

I wonder if his dealer updated all the ecu's to latest firmware at the same time....might have been told by vx in luton to do it  :-/

I assume thats a vx dealer job then  .....update all the ecu's?

Im fairly certain engine ecu is the latest (vx dealer had it a week after changing engine ecu to update it coz they didnt when they fitted it), dont know about g/b ecu and wouldnt think they have touched the abs ecu

[Marks DTM Calib]

Its questionable if the ABS one needs doing as there are a couple of different versions of unit one of which does not use the CAM bus.

I would think its very importnat to ensure that the gearbox AND engine ECU have the latest and compatble SW in them because the 2.2 (and 2.6/3.2) were different to earlier gearbox ECU's as these did not have CAM bus......I wonder if the muppets have used an early gearbox software version without CAM bus support.

[TheBoy]

Its questionable if the ABS one needs doing as there are a couple of different versions of unit one of which does not use the CAM bus.

I would think its very importnat to ensure that the gearbox AND engine ECU have the latest and compatble SW in them because the 2.2 (and 2.6/3.2) were different to earlier gearbox ECU's as these did not have CAM bus......I wonder if the muppets have used an early gearbox software version without CAM bus support.

I would have thought that it wouldn't allow you to put an incompatible software on an ECU?

[Marks DTM Calib]

Who knows.....it might well be that the latest ECU is backward compatible with the older systems (would make sense) so it might be possible.

[Del Boy]

Bit of nerver ending story with u eh TD but really m8 i hope u get it sorted and good luck with it m8

[Gascon]

Hi
I have been having same problem as you, I have the cam sensor and crank sensor replaced and it made no difference.
A couple of days back I had a look at the fuse box checking fuse no 9 and fuse no 26 (Automatic transmission fuses). When I went to pull them out, well, they didnt need much pulling, they were so slack I was suprised they were still in place and had not falling out. With a thin blade tried to push the fuse holder connectors together, replaced both fuses(old ones were ok) but now the new ones feel tighter in the fuse holder.
I have not seen the EML for three days, starts first turn of the key.
The question is , is all this a a bit of wishfull thinking of my part or am I on to something here.
I wont touch anything else for a few days and see what happens

Oh No! It was wishfull thinking fault reappeared today again

[Auto Addict]

As far as I can remember, this is what I think they did, with the help of Vx tech. support.

Latest ECU software (gearbox and engine) - didn't cure the fault.

Changed ECU (gearbox and engine) - didn't cure the fault, put originals back.

Changed the crank sensor - didn't cure the fault, put original back.

Changed the cam sensor - bingo!

Hope this helps.

[Taxi_Driver]

Who knows.....it might well be that the latest ECU is backward compatible with the older systems (would make sense) so it might be possible.

But wouldnt it be doing it all the time? And I wouldnt get any clean starts?

[Taxi_Driver]

Bit of nerver ending story with u eh TD but really m8 i hope u get it sorted and good luck with it m8

Cheers LSG.....i will be glad when its sorted

[Taxi_Driver]

As far as I can remember, this is what I think they did, with the help of Vx tech. support.

Latest ECU software (gearbox and engine) - didn't cure the fault.

Changed ECU (gearbox and engine) - didn't cure the fault, put originals back.

Changed the crank sensor - didn't cure the fault, put original back.

Changed the cam sensor - bingo!

Hope this helps.

Trouble is AA, what the dealer tells you they have done and what they have actually done (when its warranty work) can be different imo.

Reason I mentioned changing the cam sensor again (if it has been).
When i went to pick the car up on that occasion, service desk told me nothing had been done and the service manager was going to ring me........when he didnt, I called him......it was in this conversation i suggested they might like to try changing the cam sensor......it was then he told me they had changed it.....so service desk said they did nothing, service manager says they did!!! And it was this conversation that service manager told me he wouldnt be prepared to look at it again until the lpg conversion was removed.
So hands up who thinks its been changed and hands up who think it hasnt.......coz im not positive it has!


Ive another question.....probably for Jaime really......every piece of firmware ive seen has a version number somewhere.....is it possible to read the firmware version from the g/b and engine ecu?.....and if so.....i guess you would know what versions are the latest ones?

If the answer is yes I can feel another trip to my local garage to see if their snapon diag kit can read it.

Cheers guys i really appreciate your help