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General E46 Forum
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Old 04-17-2016, 04:30 AM   #1
Lukenzo
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Idle is jumping

Hello. When I bought my car idle was jumping time to time from about 0.5 to 0.9k/rmps. I changed O2 sensors and PCV. Now idle is jumping only after rain/when raining. What could be wrong? After scanning with bmw scanner 1.4.0 I get misfire and o2 errors in shadow. I am driving 318i preFL. Thanks
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Old 04-18-2016, 12:43 AM   #2
swordsman11868
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Post the exact error codes and their meaning so we can help you.
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Old 04-18-2016, 02:05 AM   #3
Lukenzo
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Old 04-18-2016, 05:06 AM   #4
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Idle is jumping

Jumpy idle can be caused by several things. But, the first step is to have the ECU scanned for codes. The SES/CEL light doesn't need to be on for the ECU to have codes. Have the ECU scanned and report back with the codes.

Your picture doesn't come though.

Last edited by markusmarkus; 04-18-2016 at 05:07 AM.
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Old 04-18-2016, 01:02 PM   #5
Lukenzo
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Here is link for the picture : http://s4.postimg.org/styd3w8fv/Screen_Shot_69.png . Can you see it? Because I can see both of them
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Old 04-19-2016, 11:33 AM   #6
Lukenzo
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Any ideas?
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Old 04-25-2016, 02:40 AM   #7
Lukenzo
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Up?
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Old 05-06-2016, 11:00 AM   #8
Lukenzo
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Idle is jumping

Hi ! after washing car with hands or after rain idle is jumping about 0.5-0.9 rmps. + bmw scanner shows misfire in all cylinders. What should I check ? I have changed o2 sensors, pcv. I am driving pre fl 318i

Last edited by Lukenzo; 05-06-2016 at 11:05 AM.
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Old 05-07-2016, 06:37 AM   #9
markusmarkus
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Have the computer scanned for codes. That's always the first step even when the SES/CEL light isn't on.
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Old 05-07-2016, 06:55 AM   #10
BMWCaptain
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Lift your hood and see if your cabin filter is installed correctly. Water could be getting on the engine from this location.
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Old 05-07-2016, 08:08 AM   #11
Lukenzo
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I will upload codes later. The cabin filter is in its place, but I noticed that filter sometimes is wet
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Old 05-08-2016, 03:18 AM   #12
Lukenzo
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Here are DME codes : http://postimg.org/image/ezl9w6fnl/
Any ideas ?

Last edited by Lukenzo; 05-08-2016 at 03:18 AM.
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Old 05-08-2016, 11:15 PM   #13
Lukenzo
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Normal rmps

Hi. What rmps should be on a bmw 318i prefl with petrol/lpg?
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Old 05-12-2016, 04:42 AM   #14
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Threads merged

Last edited by Solidjake; 05-12-2016 at 04:43 AM.
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