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#1
11-09-2012, 01:04 PM
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service engine soon light (diagnosis)
hey everyone.
I turned the car on and it had the light on. how would i check why its on? i have the software needed. which one should i use to check. noticed the rpm got stuck at 2k at one point. and changed the oil less than 1000 miles ago.... and there is a weird hisssing noise just above the valve cover... help anyone? thanks
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2009 BMW E60 LCI 528Xi SOLD 2002 BMW X5 3.0i E53  
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#2
11-09-2012, 01:10 PM
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they must've bumped the MAF when they changed oil... or, dislodged some of the vacuum hoses... was it a Jiffy-Lube or a dealer?
plug in your cable, laptop and read the DME codes... as a matter of fact, read any/all error codes - some of them are just stored and not trigger warning lights... Last edited by TerminatorX5; 11-09-2012 at 01:11 PM. Reason: spelling
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#3
11-09-2012, 01:14 PM
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Quote:
does carsoft read dme? which program would you use to view codes?
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2009 BMW E60 LCI 528Xi SOLD 2002 BMW X5 3.0i E53
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#4
11-09-2012, 01:18 PM
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SES (Service Engine Soon) warning light means that something is wrong in the emissions related electronics.
O2 sensors, MAF, vacuum leak, etc. If you didn't have the problem BEFORE you did some work then you probably knocked something loose or damaged something in the process.
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#5
11-09-2012, 07:08 PM
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Quote:
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#6
11-09-2012, 01:17 PM
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i would try one at a time, as long as you do not erase the error, it will stay there from one sw to the next until you read it... i bet it has something to do with air or vacuum - based on hissing... is idling rough, by any chance?
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#8
11-09-2012, 02:11 PM
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hmmm... luft = air (luftwaffe, lufthanza...) definetely something to do with the air... probably air intake... check the sensor located on the air intake tube, it is plugged from a side of the tube, visible from the top, right before your eyes, as you are looking at the engine bay... it could be dislodged from the tube, thus not reading the air mass, or got unplugged... meanwhile i will look to see if these numbers mean anything...
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#10
11-09-2012, 02:44 PM
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hot film air mass... sounds so familiar... i have to dig around to see where that thing is located... you have 3.0 - is it an M54 engine?
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