POWER LOSS ON START UP

[bigdipper]

I HAVE AN 06 X5 3.0 DIESEL.WITH AN INTERMITTENT FAULT.IT ALWAYS STARTS AS NORMAL,BUT SOME-TIMES IT IS RUNNING IN LIMP MODE FOR THE FIRST 2 OR 3 MILES,THEN IT IS OK.ALSO I TRIED STOPPING IT AND RESTARTED,AGAIN THAT SEEMED TO DO THE TRICK.WHAT,S GOING ON!! ANY-ONE GOT ANY IDEAS?

[X5Ghost]

Do you have the same symptoms as in this thread? You might want try the same fix?

http://www.xoutpost.com/bmw-sav-foru...lp-please.html

[bigdipper]

Thanks,was thinking along the lines of the MAF playing up.Will try disconnecting it and see if it makes any difference.Regards.

[sturach]

Hi

did you resolve your power loss issue

Mine has done it a couple of times aswell (2006 3.0d sport)

regards

[bigdipper]

Hi there,my car has been in for diagnostic scan,and they think it is the EGR valve.Going in on monday for further investigation.Will keep you posted.

[sturach]

have you tried to bypass the egr valve by blocking the vacum pipe

I have a feeling it's the maf sensor that needs cleaning but wa hoping for more replys

regards

[bigdipper]

Hi there,I checked out the EGR valve which seemed fine.Removed Maf unit and gave it a good clean with electrical spray cleaner.I also noticed that the engine oil was on the high side,which I adjusted.After which, the car is running like a swiss watch!!> Fingers crossed I hope it is cured.Hope this is helpful to you.BIGDIPPER.

[sturach]

Hi Bigdipper

Did you remove the maf sensor to clean it?

Was it straight forward?

regards

[bigdipper]

Yes I removed it.Its a pig of a job.You will need both male and female Torx tools plus a lot of patience.I used electrical spray cleaner from Halfords £3.99.Give it a proper soaking from every angle through the mesh from both sides,then let it dry.DO NOT TOUCH THE ELEMENT with anything or you will knacker it.Hope this helps.Good luck.Regards bigdipper.