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Old 11-01-2016, 03:08 PM   #1
mmmdddmmm333
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cold start issues 06 330 ci zhp



Hey Guys,
Wondering if anyone has the same issues as I've had lately. I have a 2006 330ci zhp automatic (145 kms). On cold starts, the car shakes a bit ( not too violently but noticeable) until the idle comes down. Then after a minute of driving while sitting at a light, it will start to misfire. The idle only dips a little but you can feel the misfire on your foot through the brake pedal. Once it warms up it pretty much goes away but the idle is not completely smooth.
There are no codes and I have replaced coils, plugs, valve cover gasket including the one that seals around the plugs, fuel filter, fuel pump, DISA valve was ok, checked for cracks to rule out vacuum leaks, intake plenum gasket ( the orange one), CCV, and o rings on the fuel injectors.
I know its late in the season but I'd like to repair it before I put it away.
Any help or suggestions as to what worked for you would be greatly appreciated.
Thanks
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Old 11-02-2016, 10:54 AM   #2
jabela
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Have you cleaned the ICV and MAF?
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Old 11-02-2016, 11:54 AM   #3
Blackedout95
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Plugs? Where they inspected when you changed the VCG.
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Old 11-02-2016, 02:00 PM   #4
mmmdddmmm333
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Hi Guys, thanks for your replies. I did clean the MAF with sensor clean but not the ICV. Not sure how or where its located. The plugs initially had oil on them but had them replaced when i did the gasket and are now dry.
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Old 11-02-2016, 02:36 PM   #5
jabela
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Quote:
Originally Posted by mmmdddmmm333 View Post
Hi Guys, thanks for your replies. I did clean the MAF with sensor clean but not the ICV. Not sure how or where its located. The plugs initially had oil on them but had them replaced when i did the gasket and are now dry.
It's under the intake.

http://www.realoem.com/bmw/enUS/show...diagId=13_0910
https://www.google.com/url?sa=t&rct=...dP93WuAIS-i6EA
http://www.m3forum.net/m3forum/showthread.php?t=310634
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Last edited by jabela; 11-02-2016 at 02:42 PM.
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Old 11-02-2016, 03:59 PM   #6
doogee
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Do M54's ever not misfire? I seriously hate this engine lol. My brother has one and it manages to get some sort of vacuum leak once a year.

Triple check your intake boot. Remove the upper part and check the part that actually goes to the ICV.

Certainly sounds like a vacuum leak to me.
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Old 11-02-2016, 05:42 PM   #7
mmmdddmmm333
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Might have to check the intake hoses again since I'm relying only on what the mechanics saw. sometimes they miss things. What about banks seals? Did anyone ever replace them to solve this cold start problem?
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Old 11-02-2016, 05:44 PM   #8
mmmdddmmm333
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Sorry guys. meant to say Vanos seals . STUPID autocorrect! !
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Old 03-03-2017, 03:41 PM   #9
mmmdddmmm333
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Hey guys. After a smoke test at RMP, turned out the DISA was bad and replaced it with an OEM piece. Car idles steady at start up and when warmed but i did experience a sudden drop in rpm after a sudden stop, almost stalled. Hasn't happened again. Might be the MAF acting up. Will update if it happens again and I get it repaired.
Thanks
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Old 03-03-2017, 03:55 PM   #10
jabela
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Quote:
Originally Posted by mmmdddmmm333 View Post
Hey guys. After a smoke test at RMP, turned out the DISA was bad and replaced it with an OEM piece. Car idles steady at start up and when warmed but i did experience a sudden drop in rpm after a sudden stop, almost stalled. Hasn't happened again. Might be the MAF acting up. Will update if it happens again and I get it repaired.
Thanks
Did you also have your ICV cleaned? That can get pretty clogged up with time.
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Old 03-03-2017, 04:21 PM   #11
mmmdddmmm333
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Unfortunately I didn't. Should have had it cleaned. Is it worth bringing it in to RMP to get it cleaned or can it be done easily. I'm not that mechanically inclined to do it myself.
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Old 03-03-2017, 04:48 PM   #12
jabela
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Quote:
Originally Posted by mmmdddmmm333 View Post
Unfortunately I didn't. Should have had it cleaned. Is it worth bringing it in to RMP to get it cleaned or can it be done easily. I'm not that mechanically inclined to do it myself.
You can DIY but it's a bit of a pain to get to if you're not a DIY'er. You have to remove the DISA to get to it so it's even harder than that. I've done mine.
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Old 03-06-2017, 09:40 AM   #13
mmmdddmmm333
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So exactly one week after replacing the DISA valve, I started the car this morning and again a very jumpy idle and then the check engine light came on again. I could feel the misfiring through the brake pedal at a stop but very minor like before. Going to call RMP to read the codes again and see what's next. Been throwing money at this issue since last year and still no change. At least I wont have to do maintenance for the next couple of years once the problem is solved !!!
I will update if and when the problem is solved. Wish me luck.
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Old 03-06-2017, 12:48 PM   #14
jabela
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Are you sure the CCV hasn't failed again? People have had it fail every winter. My second one failed after 2 years. Now I make sure to open my oil filler cap when I come home every day to let the yellow good evaporate. My 3rd CCV has lasted 4 years now.
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Old 09-26-2017, 10:16 AM   #15
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ICV cleaning would be my first guess here.
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