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Old 04-20-2018, 10:07 AM   #1
wc123wc
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E39 M54B30 engine CCV (general question)



Hi all!

Do you know if the M54B30 engine has an issue with the CCV going bad?

Is the CCV known to go bad and need replacement every certain amount of km's?

I am asking because the CCV on my car was replace in 2012 with the cold weather package CCV, the car then had 150k on it. Now the car has 270k on it and I am just wondering if after 120k the CCV needs to be replaced.

I am trying to rule out (if possible) the CCV as a culprit causing a rough cold start.

Any helpful feedback is much appreciated!
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Old 04-20-2018, 10:40 PM   #2
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Yes they go bad ALL the time, just a few year life span depending on the brand used. At your millage you should definitely get it done!
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Old 04-22-2018, 12:13 PM   #3
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Thank you! I am looking into having my mechanic look into it and replace it if it's bad.

I live close to work so my drives are short (10-15 minutes) long and in the winter that's a bad thing for the car. And I have a second car I depend on for other longer drives, so I know my E39's CCV is kind of abused with these short drives in the winter. This winter I saw this white foamy substance under the oil cap and on the tip of the dip stick, which can't be good! It went away after I went on a long drive.

Last week I had an oil change and now the car idles much better.

The only thing is that they say bad CCV causes black smoke. My car doesn't have black smoke from the exhaust. Only white smoke and it's gone now after the oil change of last week (I also did an engine oil flush before the oil change, so may be that's why the white smoke is mostly gone now.) But there is no black smoke!
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Old 06-14-2018, 06:48 PM   #4
nizoo
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whatever you do, DO NOT BUY CHINESE CCV! buy original and keep your eyes open.

I made the mistake of using aftermarket CCV. went bad within 6 month, replaced it under warranty, then went bad after another 6 month.. Told my mechanic to fix the car (had a few other problems), came back and he had already replaced the CCV with yet an another knock off.. which I had to pay for, and only lasted 6 month AGAIN.

the CCV problem gave me a headache, and the worst part is that my car would leak oil because of the CCV.
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Old 06-17-2018, 04:41 PM   #5
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No Chinese mechanical parts for me! I've heard horror stories about Chinese made fuel injectors!

I am thinking of doing the 02Pilot mod...just need some time for it!

Quote:
Originally Posted by nizoo View Post
whatever you do, DO NOT BUY CHINESE CCV! buy original and keep your eyes open.

I made the mistake of using aftermarket CCV. went bad within 6 month, replaced it under warranty, then went bad after another 6 month.. Told my mechanic to fix the car (had a few other problems), came back and he had already replaced the CCV with yet an another knock off.. which I had to pay for, and only lasted 6 month AGAIN.

the CCV problem gave me a headache, and the worst part is that my car would leak oil because of the CCV.
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