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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > USA - Rockies / Midwest > 335i mysterious new problem??



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      04-02-2014, 10:50 PM   #1
335ispooling
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335i mysterious new problem??

last week i was driving and hit a hole on the ground. after everything went to hell. the car starting misfiring and apparentely killed the battery. so i had it towed to bmw they replaced the hpfp and upgraded the software. i brought the car home and it kept shuttering shaking misfiring you name it . i replaced injectors coils plugs and battery. now it only starts on cold starts after its warmed up it just cranks for a couple seconds. but when it does manage to fire up it still shakes and rpms still go from 500-1k. i try to drive it but theres no throttle response? i really need help its driving me crazy i had just dynoed the car the day before so i had added 3 bottles of nos octane booster on 7 gallons of 91 octane what can this be?? would really appreciate any thoughts
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      04-02-2014, 11:27 PM   #2
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The first thing I would do is check for codes via jb4\cobb/BT tool whatever you have excess to .. start there then report back
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      04-03-2014, 09:27 AM   #3
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ive already tried the jb4 is not letting me read codes
it keeps saying read failed
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      04-03-2014, 10:32 AM   #4
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Quote:
Originally Posted by AlexItSpooling View Post
when it does manage to fire up it still shakes and rpms still go from 500-1k. i try to drive it but theres no throttle response?
mine does something similar to this at times but no codes...drives me nuts sometimes car shakes like crazy for a few seconds too like its about to stall
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      04-03-2014, 10:42 AM   #5
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I believe the input your're looking for is here.
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      04-03-2014, 03:36 PM   #6
335ispooling
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yea man but mine doesn't do anything there's no throttle response
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      04-06-2014, 04:05 AM   #7
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Quote:
Originally Posted by AlexItSpooling View Post
ive already tried the jb4 is not letting me read codes
it keeps saying read failed
I've been super busy as of late. In the process of moving but if you have the jb4 I will help you select the right com port and get it communicating
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      04-06-2014, 04:19 AM   #8
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Go to Device manager then USB serial port (com)then match the attached com number and add that same USB serial port number on you jb4 settings and vuala done...
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      04-06-2014, 05:49 PM   #9
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It does not let me read codes at all
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