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      02-18-2024, 09:49 PM   #9
Our03z4
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Drives: 2008 BMW Z4 3.0si Coupe,
Join Date: Nov 2016
Location: USA

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Quote:
Originally Posted by Erinra View Post
Thanks for the replies, I've just got ahold of a new CCV set which I will replace tomorrow (11617533400, 11617533398, 11617533399, 11157532629, 11617504536).
Also the rubber boot (13541438761) and the tube elbow (13541438759).







I replaced the sparkplugs and I'll post some pictures later, I think the coils looked fine, but maybe a defective coil isnt visable to the naked eye?

(I tried starting the engine after replacing the sparkplugs but It was to no avail but I guess they needed replacing anyway since I don't know the last time they we're replaced)



Oh yeah, Thanks for this tip, I'll get some fuel additive to, it wont harm.

I'm also going to clean the MAF since I'm removing the boots anyway.

I cleaned the codes with a simple ELM327 and phone app, maybe I'll have to plug in my BMW 1.4 scanner and my laptop..


Anything else I missed so far?

Like I always tell people, the MAF sensor connector wires break on these engines. You can buy a kit to replace the connector quite easily. All my random codes I chased for years have vanished after replacing it. Car no longer hunts for idle at start up. Just a thought for you if you can't trace the issue down.
Appreciate 0