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Old 06-09-2010, 11:57 AM   #1
sproule905
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few issues - advice neede before i get hosed!

Hey guys/gals,

i've got a 99 328is w/ 180KM on the motor, its 5 spd.

issues:

back in the winter i noticed an irratic sound at idle. like a chugging. so a buddy and I ran it through the computer and it pointed to cylinder 2 fault - so i swapped out the coil form C2 and C4, ran the computer and the fault code showed C4. i have since then replaced the coil and for the most part the chugging went away.

Next, in second or 3rd gear i've notced a lot of hesitation if i give it a lot of gas - could my clutch be on its way out? do you think another coil is gonzo's? i have a feeling since i replaced one a chain reaction could have resulted here.

Last, yesterday i was sittiing in idle and could hear a weird mechanical noise coming form the engine. almost sounded like the electronic solenoid form the heat vent was operating - note: my digital controls were all off.

If anyone has any recommendations i would be very greatful before i send this into the shop.

I believe the clutch needs replacing due to the power loss and sometimes over-revving when i drive.

Thanks for your time.
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Old 06-12-2010, 01:42 AM   #2
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thanks for all the insight! 54 views and nothing..
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Old 06-12-2010, 02:12 AM   #3
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Change the spark plugs first, see if that makes a difference. Check vacuum lines and intake boot for cracks, actually remove it completely to inspect, this can't be said enough. Could be a lot of things to be honest. Its hard to say without hearing/seeing it happening.
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Old 06-12-2010, 03:06 AM   #4
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did you put the plastic cover back over top of the coils, i cant remember with my e36w but i know with my e46 if the cover isnt on and you go through a car was the water will go into your spark plug pipes and cause a rough running engine, normally misfiring.
+1 for checking all your vacuum lines and intake.
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Old 06-12-2010, 03:42 AM   #5
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did you put the plastic cover back over top of the coils, i cant remember with my e36w but i know with my e46 if the cover isnt on and you go through a car was the water will go into your spark plug pipes and cause a rough running engine, normally misfiring.
+1 for checking all your vacuum lines and intake.
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Old 06-16-2010, 01:17 AM   #6
sproule905
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changed the plugs back in Feb when I noticed the erratic chugging, but my RPM's never fluctuated at all. I haven't had a chance to check much as my car sits on a train - i've shipped it back home to TO. but i am pretty sure the clutch is on its way out! oh, and yes the plastic engine cover is back on.

thanks at elast for some feedback, guys!
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Old 06-25-2010, 04:42 PM   #7
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got my car back today! put some 91 octane gas in it as it's been sitting on a train since June 11th. Anyway, the car is still a little hesitant when accelerating ( only if I stomp on it) but I am going to check out the vacuum lines this weekend.

thanks!
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Old 06-26-2010, 01:26 AM   #8
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Let Rocco take a look @ it. I'm sure he'll pinpoint it within minutes.
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Old 06-27-2010, 03:23 PM   #9
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buddy ran a computer on it yesterday.. failed O2. i guess this would also cause a bog when i stomp on the gas??

anyway, failed Etest.. high HC content. i believe the failed O2 sensor should be the probably cause.
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