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Old 12-19-2012, 11:56 AM   #420
Registered User
Join Date: Nov 2009
Location: Fairfax, VA USA
Posts: 16,585
My Ride: 330CiC, M5, X5
I would bet your VANOS seals are not your problem, but it never hurts to change them.

If you have a 2003 330 you should have a vacuum controlled SAP, if your big hose from the air pump to the diverter valve has standard hose clamps, then the diverter valve has a vacuum port and the hose is likely broken along the valve cover in MANY places.

BTW the SAP system sends vacuum to the diverter for up to 90 seconds on cold starts. So this may be your 1-2 minute issue?

What are your fuel trims when the engine is warmed up?

Please explain what you have replaced so far as you said you have replaced "everything" that could leak vacuum.
Solve your misfires, lean codes, rough idle -

Fuel pump failures -

Temp Info -

Hidden OBC Menu - Check Voltage, Temp, Fuel Level -

E46/E39 GM5 Door Lock Info -

Lower hose temp switch O-ring - BMW #13621743299

Last edited by jfoj; 12-19-2012 at 11:58 AM.
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