Please help me with a issue with 2006 E90 320d

Please help me with a issue with 2006 E90 320d

Author
Discussion

Skiingmonkey

Original Poster:

2 posts

107 months

Thursday 23rd April 2015
quotequote all
Hi all,

I have a E90 320d with 113k on the clock with full history and it has a annoying issue.

When it is cold it drives like new, but when it gets warm (30 mins of driving) it has what can only be describe as what feel like a slight fuel starvation issue.

It is around the 3-4000 revs and is intermittent.

I've changed, fuel filter, all air filters, and had multiple engine flushes. The flushes do make a difference but very short term.

If anyone out there has had the same issue, please help.

Thanks in advance.

TheEnd

15,370 posts

187 months

Thursday 23rd April 2015
quotequote all
Checked for any codes yet?

I have a feeling it could be EGR valve related.

Skiingmonkey

Original Poster:

2 posts

107 months

Thursday 23rd April 2015
quotequote all
Yeah , checked for codes. And nothing :-/

TheEnd

15,370 posts

187 months

Thursday 23rd April 2015
quotequote all
What BHP is your engine? 163bhp I guess?

You can check if it is EGR related by pulling the vac hose off the EGR valve and blocking it off, a screw, golf tee, or even doubling it over will do it, just so you don't lose vacuum.

The check engine light will come on after a mile or so, but the car would normally carry on without issues.

After reconnecting the hose, the light will go off again in 5-10 miles after it has confirmed the EGR is back to normal.

It's a simple way to test if the EGR has something to do with it that won't cost you a penny and can be easily reversed too. You will have an "EGR Valve - insufficient flow" code, but by that time, you should know if it has something to do with it.

This is what the EGR valve looks like


It's on the front corner of the engine, and the vacuum valve is that big silver disc on the side. The vac hose in question is the one with a blue stripe on it that goes to a metal mounting pipe in the middle.
No clips of tools needed, just a pull on that hose, and then something to temporarily cap it off.