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johnsom
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Joined: Mar 30, 2015
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PostPosted: Mon Mar 30, 2015 5:51 pm Reply with quote Back to top

I HAVE JUST BROUGHT A a6 2.0 TDI 2007
CAR STARTS ON THE BUTTON BUT WHEN I START AFTER A SHORT RUN THE CAR SHUDDERS,ONLY DOES THIS WHEN WARM
CAN ANY ONE HELP ?????
 
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ukwide
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Joined: Jun 14, 2008
Posts: 741
Location: Salisbury

PostPosted: Mon Mar 30, 2015 5:56 pm Reply with quote Back to top

johnsom wrote:
I HAVE JUST BROUGHT A a6 2.0 TDI 2007
CAR STARTS ON THE BUTTON BUT WHEN I START AFTER A SHORT RUN THE CAR SHUDDERS,ONLY DOES THIS WHEN WARM
CAN ANY ONE HELP ?????


what on start up, or when pulling away from standstill or when accelerating hard?

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Gary
Salisbury

A6 2.4 SE in white
1993 2.3 Cabriolet in white 
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johnsom
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PostPosted: Mon Mar 30, 2015 6:05 pm Reply with quote Back to top

START UP ONLY
 
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ukwide
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Joined: Jun 14, 2008
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Location: Salisbury

PostPosted: Mon Mar 30, 2015 7:32 pm Reply with quote Back to top

johnsom wrote:
START UP ONLY


Got this from another site, might help!

if the cranking rpm is below 270/250 rpm then the injectors will not open so test the amperage of the starter under cranking and rpm speed (weak starter or battery or poor high resistance at the earth or 50 supply cable)

you can alter the ecu file if you have access to remap software for fuelling when warm in relation to crank degrees but this is not recommended and ruling out the basics would be my advise

if the noise is a clatter then it suggests the dual mass flywheel (mulititronic has this as well as the manual transmission)

also if the engine fails to start and is then followed by lumpy idle and white smoke then coolant is entering the combustion chamber

this caused by either a leaking egr cooler or a fracture in the cylinder head

so does it start first time and clatter > flywheel

or does it take a few cranks > low rpm or cylinder leakage

these are just some common issues and there are more but need specific description

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Gary
Salisbury

A6 2.4 SE in white
1993 2.3 Cabriolet in white 
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