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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 02-24-2011, 10:17 PM   #1 (permalink)
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Need help on New Turbo not performing

Hi Guys
I recently replaced by 320d (2003) E46 turbo. Now the turbo only start performing at about 3rpm and feels like only about 60%. It also has a hissing sound when it gets up there.
I was informed that it is the wastegate valve not opening.Can this be the problem. If so what must i do. Replace it, clean it, or just need some setting (if possible?)
I was said that the wastegate works on a vacuum system driven by the engine. Or so to say the presure from the oil/ oil pump. Can it be that the oil pump is not performing. How do i test this. Manuel presure test, or can it be tested on the PC?
Hope i can get some info from the forum.
Thanks
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Old 02-24-2011, 11:19 PM   #2 (permalink)
OMFG another one!?
 
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The wastegate issue was my first thought. Also check the high pressure fuel pump I'd say...
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Old 02-24-2011, 11:26 PM   #3 (permalink)
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Thanks witeshark

How does the High presure fuel pump effect Turbo lagging. or do i need to read a system manual to explain this?? Always looking for the easy explanation to the un-educated.
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Old 02-24-2011, 11:56 PM   #4 (permalink)
OMFG another one!?
 
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I would look through a good manual. The turbo diesel system is great but needs to be watched
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