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E21, E30 General discussion and technical help for 1975-1991 3 series cars.

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Old 06-18-2006, 10:00 AM   #1
Jammer3

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325i - Engine surges at idle

I have an '88 325i and when I am sitting at an idle in gear or in park the engine surges from about 500 rpm to 800 and I'm not sure which sensor is causing the issue, or if I just have a vacuum leak.

Anyone have any suggestions as to where I should check or how to find out what's wrong?

Thanks in advance.

Jake
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Old 06-18-2006, 11:11 AM   #2
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try checking out your idle control valve.
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Old 06-18-2006, 01:38 PM   #3
Dudesky

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Also check for rips or tears on the intake bellows leading into your throttle body.
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Old 06-19-2006, 07:54 AM   #4
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Yup that'll do it.
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Old 06-27-2006, 11:53 AM   #5
hartgeh27

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check the O2 sensor on the exhaust pipe. I had this problem in a m20 motored e34
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Old 07-06-2006, 12:20 PM   #6
sbcBMW305v8
 
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it wouldnt have that problem if it had a V8
haha jk
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Old 07-06-2006, 02:50 PM   #7
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Old 07-06-2006, 08:45 PM   #8
sbcBMW305v8
 
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this is how i drove with the stock bmw
now i drive like this with an american v8 sticken through the hood

right celsdogg , i didnt think a bmw could sound so good
just playing celsdogg
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Old 07-06-2006, 08:50 PM   #9
celsdogg
 
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^^^ lol, i know. me too

thats is a unique mod. i dont think you have ever posted pics?
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Old 07-09-2006, 03:23 PM   #10
sbcBMW305v8
 
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i dont kno how to
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Old 07-09-2006, 04:57 PM   #11
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If you can, resize to be as small as possible so anyone can see. Then when you post use the *go advanced* button to the right under the post message box and upload attachments
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Old 07-09-2006, 05:07 PM   #12
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Quote:
Originally Posted by sbcBMW305v8
i dont kno how to
It's a built in feature of UB not to allow pics of "hybrid" BMWs (J/K)
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Old 07-11-2006, 09:22 AM   #13
sbcBMW305v8
 
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haha im trying to edit a signature but the pic doesnt show up, im not a computer wiz so somebody need to help me
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Old 08-09-2006, 09:40 AM   #14
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bit late, but in yopur sig page you should be able to do [img]theurltoyourimagesyoualreadyhaveposted[/img]

there is html code for it (<img="site">) but.. dont think this site allows that

anyway, yeah :P
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