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Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes - Fixed #

Posted by Mark Duhigg on June 17, 2010, 10:23 am

Year of Manufacture *: 2006
Engine Size and Code *: 2.2 CDI

Good day
Sprinter van idle surges up and down and dies
OK for first start then surges and dies.
No fault codes. Cleaned EGR and throttle body.
Fault still there. Any suggestions gratefully received.
Cheers
Mark

Re: Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #

Posted by Mark carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on June 17, 2010, 1:43 pm, in reply to "Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #"
Mark Carter

What is live data telling you?

Regards Mark

Modern cars, Its all wizardry and witchcraft

Re: Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #

Posted by Piotr Sokolowski <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1848' width='330' height='300' border=0 style='border:none;'> on June 17, 2010, 10:43 pm, in reply to "Re: Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #"

'What is live data telling you?

Regards Mark'

fuel pressure, air flow

Link: www.pandpauto.eu

Re: Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #

Posted by MARK DUHIGG <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT5514' width='330' height='300' border=0 style='border:none;'> on June 21, 2010, 3:15 pm, in reply to "Re: Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #"

Fuel pressure is 250 bar @idle and over 1000 when driving. Air flow all good
Have found that when it starts to surge I pull the plug off the fuel pressure sensor idle goes to normal.
Have replace the fuel rail with good one,check injectors for leak off all good. Next step is to change injectors. Cant think of any thing else.
Any suggestions please???
Mark

Re: Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #

Posted by Piotr Sokolowski <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1848' width='330' height='300' border=0 style='border:none;'> on June 21, 2010, 8:16 pm, in reply to "Re: Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #"

what fuel pressure you have when it starts surging? And when you pull the fuel pressure sensor off the rail pressure is increasing. Thats why is coming back to normal .

Link: www.pandpauto.eu

Re: Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #

Posted by Mark Carter <iframe src='https://members.boardhost.com/ukautotalk8/info/user=UKAT1428' width='330' height='300' border=0 style='border:none;'> on June 24, 2010, 6:48 pm, in reply to "Re: Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #"
Mark Carter

Scope the rail pressure sensor and the IMV to see what is happening. HTH

Regards Mark

Modern cars, Its all wizardry and witchcraft

Fixed #

Posted by Mark Duhigg on June 29, 2010, 6:53 am, in reply to "Mercedes Benz Sprinter 2.2 CDi 2006 - Surges up and down at idle then dies, no codes #"
Message modified by board administrator June 29, 2010, 3:43 pm

Thanks to Piotr for sending me in the right direction.
Sometimes I think you cant see what is starring you in the face!!!
Check fuel pressure with sensor plug off goes into limp mode and defaults to 400 bar and idle fine... Restricted the return off the pump and found idle o.k
Changed pump and fixed
Cheers
Mark

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