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3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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Old 06-05-2004, 07:23 AM   #1 (permalink)
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i have a really rough idle when i start my car (sound and feels like a chevy 350 with a raceing cam or something) the car shakes back and forth

but if i pull off the vacuum line on the back of the intake manifold and plug it with my finger the idle smooths out.

what that mean?
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Old 06-06-2004, 04:13 AM   #2 (permalink)
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i guess no one else has this problem?
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Old 06-07-2004, 01:45 PM   #3 (permalink)
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I do have this same problem, and its a little better once I do what you did. I'd like to know what the canister on the other end of that vacumn line does, I have for awhile.
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Old 06-07-2004, 02:16 PM   #4 (permalink)
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the canister is the fuel pressure regulator.
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Old 06-07-2004, 11:11 PM   #5 (permalink)
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hmm....
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Old 06-08-2004, 05:08 AM   #6 (permalink)
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yea i allready replaces the regulator and nothing changed

now if i could just get that dam O2 sensor out
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