engine malfunction after it rains

alexukie · 08-09-2013, 12:20 PM

i have noticed that when every it rains and i start my car i get a engine malfunction light. and when i hold the brake, rpms go up and down.The car starts perfect. and once it warms up a little and i turn it off and back on then it goes away.. When its warm outside it starts up and gives me no issue.. anyone had this problem? heres a video

note: car has no mods.. completely stock. i did recently change the serpentine belt and tensioner pulley.

alexukie · 08-09-2013, 12:21 PM

alexukie · 08-09-2013, 12:29 PM

also no codes

farb · 08-09-2013, 02:37 PM

lol wtf... never seen that before

007_e350 · 08-09-2013, 02:44 PM

Shadow codes wont pull thru OBDII, you need to have JB4 or scanner to read DME codes ... Engine RPM issue could be VANOS (15 min DIY) - I also had vaccum leak which would become more pronounced with rain for reasons I dont know

cwarren · 08-09-2013, 11:26 PM

better figure this out quick if you have a water leak and its getting into the ecu its only a matter of time before it does some serious damage ,

alexukie · 08-12-2013, 08:10 AM

Quote:

Originally Posted by 007_e350

Shadow codes wont pull thru OBDII, you need to have JB4 or scanner to read DME codes ... Engine RPM issue could be VANOS (15 min DIY) - I also had vaccum leak which would become more pronounced with rain for reasons I dont know

i have a jb4 but havent installed it.. can you tell me how i can use it to read codes?

007_e350 · 08-13-2013, 09:10 AM

u can google for more info - the quickest way is to plug the usb into ur laptop and go to the last tab, Read DME Codes

Tzu · 08-14-2013, 06:27 AM

Try superglue.

capo1m · 08-14-2013, 11:33 AM

Quote:

Originally Posted by Tzu

Try superglue.

:

alexukie · 08-22-2013, 01:19 PM

so i got the issue fixed.. it was something electrical related.. dealer said it would be about 2000 to fix... got a buddy that did it for 300. took a week tho to figure what was wrong since his computer didnt show exactly. something with the computer

///Mposter · 08-22-2013, 01:55 PM

Quote:

Originally Posted by alexukie

so i got the issue fixed.. it was something electrical related.. dealer said it would be about 2000 to fix... got a buddy that did it for 300. took a week tho to figure what was wrong since his computer didnt show exactly. something with the computer

A lot of times it's connector contacts that go bad or did not seat correctly the first time. I'm interested to know what your buddy did to fix it. It would be helpful to the community to provide the info just incase someone had the similar situation. The video was interesting btw.

Jeff@TopGearSolutions · 08-22-2013, 03:11 PM

Quote:

Originally Posted by alexukie

so i got the issue fixed.. it was something electrical related.. dealer said it would be about 2000 to fix... got a buddy that did it for 300. took a week tho to figure what was wrong since his computer didnt show exactly. something with the computer

Can you be more specific on what was fixed?

Iceberg3232 · 08-23-2013, 09:53 AM

I have this exact same issue and am POSITIVE it's electrically related. Please provide as much detail as possible as the car is currently at the shop making their heads spin...on my dime!

alexukie · 08-23-2013, 01:51 PM

he doesnt speak english so i will have my dad talk to him lol.. i do know i did change the gas pedal because of a sensor in it that was bad but that wasnt the problem

08-09-2013, 12:20 PM	#1
alexukie First Lieutenant 36 Rep 304 Posts Drives: 335i coupe Join Date: Sep 2012 Location: rochester ny iTrader: (0)	engine malfunction after it rains i have noticed that when every it rains and i start my car i get a engine malfunction light. and when i hold the brake, rpms go up and down.The car starts perfect. and once it warms up a little and i turn it off and back on then it goes away.. When its warm outside it starts up and gives me no issue.. anyone had this problem? heres a video note: car has no mods.. completely stock. i did recently change the serpentine belt and tensioner pulley.
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08-09-2013, 12:21 PM	#2
alexukie First Lieutenant 36 Rep 304 Posts Drives: 335i coupe Join Date: Sep 2012 Location: rochester ny iTrader: (0)
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08-09-2013, 12:29 PM	#3
alexukie First Lieutenant 36 Rep 304 Posts Drives: 335i coupe Join Date: Sep 2012 Location: rochester ny iTrader: (0)	also no codes
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08-09-2013, 02:37 PM	#4
farb teh Rider! 12 Rep 488 Posts Drives: E92 335xi Join Date: May 2011 Location: Toronto iTrader: (1)	lol wtf... never seen that before __________________ 2008 335xi AW/Black MT 383 awhp/410awtq Avant Garde M359 l Hankook Ventus V12 l Kw V1 l M3 Front+sides \| Mtec Rear \| LCI tails l Cobb Stage2+FMIC l AR DP l ER IC l ER CP l Tial BOV \| AFE Stage2 DCI
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08-09-2013, 02:44 PM	#5
007_e350 Lieutenant Colonel 217 Rep 1,909 Posts Drives: 335i 2008 MHD'd / x5d E70 Join Date: May 2013 Location: left lane iTrader: (3)	Shadow codes wont pull thru OBDII, you need to have JB4 or scanner to read DME codes ... Engine RPM issue could be VANOS (15 min DIY) - I also had vaccum leak which would become more pronounced with rain for reasons I dont know
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08-09-2013, 11:26 PM	#6
cwarren Captain 82 Rep 725 Posts Drives: 08 e92 Join Date: Jan 2012 Location: portland iTrader: (1)	better figure this out quick if you have a water leak and its getting into the ecu its only a matter of time before it does some serious damage , __________________ ptf MHD E85 /Hexon rr550 turbo's/PRE custom intakes/CP / bms dp's/hfs4 / er fmic/PSS/spec stage 2+/kwv2/steveAZ stage 3 lpfp /m3 control arms/powerflex black/MF LSD /fuel it port injection
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08-13-2013, 09:10 AM	#8
007_e350 Lieutenant Colonel 217 Rep 1,909 Posts Drives: 335i 2008 MHD'd / x5d E70 Join Date: May 2013 Location: left lane iTrader: (3)	u can google for more info - the quickest way is to plug the usb into ur laptop and go to the last tab, Read DME Codes
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08-14-2013, 06:27 AM	#9
Tzu Lieutenant Colonel 29 Rep 1,551 Posts Drives: 335i Join Date: Jun 2010 Location: Toronto iTrader: (1)	Try superglue.
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08-22-2013, 01:19 PM	#11
alexukie First Lieutenant 36 Rep 304 Posts Drives: 335i coupe Join Date: Sep 2012 Location: rochester ny iTrader: (0)	so i got the issue fixed.. it was something electrical related.. dealer said it would be about 2000 to fix... got a buddy that did it for 300. took a week tho to figure what was wrong since his computer didnt show exactly. something with the computer
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08-23-2013, 09:53 AM	#14
Iceberg3232 First Lieutenant 27 Rep 388 Posts Drives: 2008 335xi Coupe Join Date: Sep 2012 Location: Newtown, PA iTrader: (0)	I have this exact same issue and am POSITIVE it's electrically related. Please provide as much detail as possible as the car is currently at the shop making their heads spin...on my dime! __________________ 335 XI Coupe/ RB Turbos/ JB4 w/ Wedge Backend / Meth / Inline LPFP / E85 / UUC SSK / Spec2+ SMFW / HPF 7'' IC / Forged DV's / AR DP's / BMS DCI / Apex Arc-8 /Hankook Ventus V12 EVO / KWV1 / HPF Exhaust/ NGK/
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08-23-2013, 01:51 PM	#15
alexukie First Lieutenant 36 Rep 304 Posts Drives: 335i coupe Join Date: Sep 2012 Location: rochester ny iTrader: (0)	he doesnt speak english so i will have my dad talk to him lol.. i do know i did change the gas pedal because of a sensor in it that was bad but that wasnt the problem
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