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3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.

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Old 06-23-2004, 09:40 PM   #1 (permalink)
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I have 1994 325i, now I feel the engine a little bit shaking when idle even after a long run, what should the procedures I should follow to inspect?
I replaced all new six spark plugs(Bosch super 2+) 2 weeks ago, beginning run was OK, but now??? ghead

Thanks for your help :wink
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Old 06-23-2004, 09:48 PM   #2 (permalink)
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have you checked the engine mounts?
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Old 06-23-2004, 09:58 PM   #3 (permalink)
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so is your car idling crappy or what is shaking? I'm kind of confused..

If it's idling like shit, change your o2 sensors and clean your iac or icv.
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Old 06-23-2004, 10:53 PM   #4 (permalink)
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Rev the engine to redline and see if there is noticeably more vibration. If there is, it's probably the engine mounts.

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Old 06-23-2004, 11:10 PM   #5 (permalink)
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Originally posted by jrhaile@Jun 23 2004, 10:38 PM
so is your car idling crappy or what is shaking? I'm kind of confused..

If it's idling like shit, change your o2 sensors and clean your iac or icv.
It should be idling crappy. Is it possible one of the new spark plus die that making crappy?

How should I clean the icv, where is it,

Thanks a lot.
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Old 06-24-2004, 12:25 AM   #6 (permalink)
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it's under the manifold intake. I'm going to be replacing mine next weekend so I'll take pics and how to's then.
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Old 06-24-2004, 01:29 AM   #7 (permalink)
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Originally posted by jrhaile@Jun 24 2004, 01:05 AM
it's under the manifold intake. I'm going to be replacing mine next weekend so I'll take pics and how to's then.
Hey man.

you're the great one.....thanks a lot
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Old 06-24-2004, 09:38 AM   #8 (permalink)
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possible that the engine could be misfiring due to a plug error of some sort. Double check those. Engine mounts are definitely a possibility. My girlfriend has a 2000 Pontiac Bonneville SLE, HUGE car, lot of power. Her car was shaking during idle. She went to have it checked out and she had completely broken an engine mount from the chassis...
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Old 06-24-2004, 01:49 PM   #9 (permalink)
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There's even the possibility to read out some fault codes from the engine. This can help you with it: http://www.peakeresearch.com/products.htm or http://www.pelicanparts.com/bmw/techarticl...ode_Reading.htm

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Old 06-25-2004, 02:59 PM   #10 (permalink)
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dude check your radiator fan......... if you drive like a prick like me then you may have lost a few blades. I have had my car 6 months now and have had to replace 3 fans! since it spins like a prop the engine will shake like a mother if its missing a blade or two.
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Old 06-25-2004, 09:46 PM   #11 (permalink)
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How many miles are on the engine because i had a similar problem with my '93 and supposedly it was fixed in '94 but i had to change my engine coils to get rid of the shaking...actually if it gets worse then that is probably what it is.
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Old 06-25-2004, 10:20 PM   #12 (permalink)
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Ok for obvious reasons... I'd say look at your motor mounts... atleast check and make sure they are all there... god forbid your missin one...

Next... I could talk for hours on the right type of spark plugs for a BMW....for one... its a distributerless ignition... which fires both ways.... best method for spark plugs... get what the darn manual say to get... NJKs are good stuff... that could be your problem... take a few of them out and see what they look like...

If you have a check engine light on... a fault code reader is always a good investment.... and if you plane to do more mods to this car... its a plus.... good luck with your motor...
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