Jump to content
Sign in to follow this  
egorn

my lupo 1.2TDI won´t start

Recommended Posts

Hi

I have trouble starting my Lupo.

The spiral lamp won´t light and then it does not start and I have to pull the coupling wire.

I had a theory about not having  enough hydraulic oil then it won´t start.

But now I have enough hydraulic oil and it still won't start.

Any suggestion?

 

 

Edited by egorn

Share this post


Link to post
Share on other sites

Sounds like a relay issue, but i'd get it scanned first.

Share this post


Link to post
Share on other sites

You may need a new accumulator - they contain nitrogen which leaks away with time. Another likely cause is a worn potentiometer on the clutch actuator - if the clutch position is not clear, starting will be inhibited.

RAB

 

Share this post


Link to post
Share on other sites

@RAB, is that how the clutch engaging works? I've read the online guide but that was the only bit that made no sense. So from your comments, I'm guessing that the gearbox controller knows the clutch biting point and calibrates itself regularly to compensate for wear. So that potentiometer is key? I wonder why they didn't go for a contactless design using hall sensors.

Was the 1.2 used in anything else as a matter of interest- anywhere? (Besides Lupo and A2) I'd love a stand alone 1.2 with manual ecu to play with...

Share this post


Link to post
Share on other sites

Can you bump a manual auto?

Share this post


Link to post
Share on other sites

The clutch position is given by the potentiometer. If the signal is noisy then starting in STOP/PARK may be inhibited. However, starting in NEUTRAL should work before the potentiometer degrades too much. A German member of the A2-freunde forum converts original actuators to one with a Hall sensor - cheaper than buying new and should last indefinitely. I have had two converted. A basic setting/recalibration should be done every 30.000km. There's very little clutch wear as slipping the clutch is not possible. A 3L clutch may last 300,000km.

You can bump start if you can get it in gear but if the actuator is failing, there's little point.

1.2Tdi was only used in the Lupo 3L and A2 1.2Tdi. There was no Arosa although a prototype may have been built.

RAB

 

Edited by RAB

Share this post


Link to post
Share on other sites

Have you ever heard of anyone successfully isolating the 1.2 ecu from the box controller? I wonder if its even possible.... everything may be coded up to be so intertwined it would need a complete rewrite?

Share this post


Link to post
Share on other sites

For what reason? They are linked for a reason. So there would be problems converting to manual. With a 3L transmission, you have to be pro-active, otherwise expensive problems appear. Being pro-active, most problems are simply avoided.

RAB

 

Share this post


Link to post
Share on other sites

I'd like to be able to run the engine completely stand alone, but still use it's factory load map. Maybe with a manual transmission. Or even in a boat... Aircraft? So light. So efficient. So compact.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
Sign in to follow this  

×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use.