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3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

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Old 10-20-2003, 05:02 PM   #1 (permalink)
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I have a e46 328ci with the 5 speed manual gearbox. I have noticed that under initial acceleration or aggressive gear changes that the clutch seems to engage at a slower rate than desired. The clutch "slips" at no other time except as noted. If I shift more slowly then the effect described above does not take place. I know that some 5 series and other models have a Clutch Delay Valve (CDV) that if modified or removed eliminates a similar problem. I have not been able to determine if the e46 also has this CDV and I don't want to raise the car to see if one is inline with the clutch slave cylinder. If anyone knows if a CDV is installed on the e46 please let me know and if you know of a place that sells a modified CDV please tell me.
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Old 10-20-2003, 08:50 PM   #2 (permalink)
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no, the e46 do not have the Clutch Delay Valve.

here are the models with them:

E39 5 Series - 525i, 528i, 530i, 540i (1997-2003)

E60 5 Series* - 525i, 530d, 530i, 545i (2004+)

3.0i X5 (1999-2004)

Z8 (1999-2003)
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Old 12-22-2003, 01:00 AM   #3 (permalink)
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sorry but:

why is this valve there to begin with ????

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Old 12-22-2003, 03:33 PM   #4 (permalink)
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Quote:
Originally posted by peterkulesza@Dec 22 2003, 02:40 AM
sorry but:

why is this valve there to begin with ????

peter
probably for smoothness and clutch life
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Old 12-28-2003, 12:38 PM   #5 (permalink)
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That's why it's only on the 5 series and not the 3. It's more of a luxury than a sport option.
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Old 05-04-2010, 01:00 AM   #6 (permalink)
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Only the I series sedans - touring have CDV - the Ci coupe do not have CDV. Researched Real OEM applies to models 323 - 330
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Old 05-04-2010, 09:41 AM   #7 (permalink)
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Thread from 2003.
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