(10-01-2017, 09:04 AM)silver-slug Wrote: brajmobil... meant to add this..
if i didsconnect the vacuum pipe from egr, noise stops (obviously as vacuum lost).
BUT... if i connect again noise starts again for 30 secs or so!
if i put finger on end of rubber pipe i can feel suction.
as engine off and vacuum not being created... where is it coming from?
The brake servo.
Next time you turn engine off press the brake pedal 5 or 6 times until there is no vacuum left in the servo and see if the noise stops.
My vehicle .... 2006 Berlingo Multispace Desire 1.6 HDI 92.
10-01-2017, 01:36 PM
(This post was last modified: 10-01-2017, 05:55 PM by silver-slug.)
i was thinking about brake servo but would the egr solenoid not cut off or release the vacuum?
winding back to when i had the egr blanked, i found the car ran better with the vacuum tube that went to egr was left unblocked. if it was sealed, engine sometimes after car coming to a stop and then accelerating away would hesitate and sometimes mil light would come on and limp mode enabled.
this just happened on a test drive, on arrival home, i left engine running for a minute or so and then when i revved it, it hesitated like fuel startvation, i immediatley disconnected vaccum pipe and it revved fine again.
as this happened same when egr blanked, i can safely assume egr ok and maybe the solenoid is at fault?
p.s. vacuum was pretty high in pipe when i disconected it.