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Old 10-19-2011, 01:43 AM   #1
clementine
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318 is acting weird

hello everyone. my car just recently started acting funny, it happened after a rainy day. it seems to loose power randomly when driving, and it idles really rough, to the point where sometimes it just turns of, also the check engine light will go on.
any suggestions?
thanks.
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Old 10-19-2011, 05:42 AM   #2
E36is
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check for bad coils, arcing spark plug wires, or loose spark plugs. and make sure all high tension leads are secure.
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Old 10-19-2011, 05:57 AM   #3
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Unplug the icv
See if that helps
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Old 10-19-2011, 11:02 AM   #4
Deetow
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Unfortunately with that description almost anything could be wrong with your car. I would start by checking the vacuum hoses for leaks, then as has been said move onto the ignition/spark system. If those both check out move onto the fuel system. These 3 could be the culprits. The vacuum is easiest to troubleshoot and the fuel is the hardest.

I had a similar problem with my last 318 and it turned out to be the #4 injector which was shitting the bed and dumping way too much fuel into the cylinder.

Chris
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Old 10-19-2011, 12:12 PM   #5
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^ I agree..start with the easiest and most cost efficient way first.
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I think I've had 14 bmw's in 4 years.
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Old 10-19-2011, 05:33 PM   #6
clementine
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what ive done
spark plugs
ignition wires
and no change.
i also forgot to mention that i forgot to put my gas cap back on(thus loosing it), prior it raining, and think water may have entered the tank. but i have already put additive in there to get the water out and nothing has changed, and this is the third fill up.

Last edited by clementine; 10-19-2011 at 05:37 PM.
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Old 10-19-2011, 05:42 PM   #7
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unplug icv
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Old 10-19-2011, 11:47 PM   #8
MaxBell
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Check that your battery is connected nice and tight. My car would do funny shit like that and that was the problem.
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just letting this furom [*forum] know
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Old 10-20-2011, 12:49 PM   #9
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But you've put another gas cap back on right?
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Old 10-21-2011, 11:09 AM   #10
clementine
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hahaha
yes i have.
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Old 10-21-2011, 05:18 PM   #11
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unplug icv
lol i have a feeling
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Old 10-21-2011, 05:26 PM   #12
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unplug icv
At what point does this become a mod? haha

Got a clogged fuel filter or failing pump?
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Old 10-21-2011, 05:30 PM   #13
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At what point does this become a mod? haha

Got a clogged fuel filter or failing pump?


it sounds exactly like the issue i had with my icv.. would idle so rough and sometimes stall out... even if that didnt happen i noticed that under slow driving conditions the motor would cut in and out and start to bog on me... i unplugged the icv and no issue since... and that was before the itb swap...
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Old 10-22-2011, 12:24 AM   #14
clementine
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unplug icv
hmm i dont think its that because even when im driving on the highway, i will try to keep a stable speed at 100km/h at roughly 3000rpm and my car will start to slowly decrease in rpm and speed until i give full throttle, then it will regain its speed again until the next spudder occurs. but i guess it wont hurt to unplug the icv.

thanks alot for all the suggestion, i appreciate it
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Old 10-22-2011, 12:28 AM   #15
clementine
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Quote:
Originally Posted by E30M42cab View Post
At what point does this become a mod? haha

Got a clogged fuel filter or failing pump?
i changed the fuel filter and no change. but as for the pump i dont know. usually with a failing pump i find the idle is ok but when giving gas it struggles, for my issue its the total opposite.
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