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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > hickups



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      11-15-2010, 09:50 PM   #1
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hickups

When I start the car on cold it starts shaking for 2 - 3 mins having those kind of like hickups but then it starts working fine, what can that be ?
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      11-15-2010, 09:55 PM   #2
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Quote:
Originally Posted by Iwantm3 View Post
When I start the car on cold it starts shaking for 2 - 3 mins having those kind of like hickups but then it starts working fine, what can that be ?
If you are running a Procede, update your harness as posted here. Some DME versions don't like downpipe fixes. Even when they are turned "off" or set to minimum strength.

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      11-15-2010, 09:56 PM   #3
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Hey no I havn't installed it yet
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      11-15-2010, 09:59 PM   #4
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btw I'm driving already 2 weeks with cat less dp's and no dp fix and no codes
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      11-15-2010, 10:54 PM   #5
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any more ?
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      11-15-2010, 11:31 PM   #6
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????????????????
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      11-15-2010, 11:42 PM   #7
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HPFP Injectors plugs coils. If no codes thrown, fuel pump and plugs can yeild a rough idle.
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      11-15-2010, 11:43 PM   #8
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When it starts shaking as you've described, what is your RPM; like less than 500 RPM's? Right before my HPFP failed, the car would start from cold and shake. I had to kick up the idle until it would stabilize at 1100 RPM.

In my case, I needed the HPFP replaced, all spark plugs, and my injectors.

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      11-15-2010, 11:47 PM   #9
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this car is fucking anoying, I will bring it to the dealer he'll say O no codes sorry, it hickups for like a minute after the cold start and then becomes normal
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      11-16-2010, 12:04 AM   #10
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That IS normal. My car rough idles when it's colder outside then smooths right back out when it warms up. At worst you might have some carbon build-up.
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      11-16-2010, 12:08 AM   #11
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That IS normal. My car rough idles when it's colder outside then smooths right back out when it warms up. At worst you might have some carbon build-up.
Have you installed procede on the 3 yet ?
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      11-16-2010, 12:14 AM   #12
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Have you installed procede on the 3 yet ?
i don't even have my 3 yet. Getting it Friday, it's going under the knife Saturday. I don't have patience to drive around stock
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      11-16-2010, 12:23 AM   #13
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I might head on over to TSADyno right after I throw all my mods on and dyno right away I think I can hit 440whp in cold weather lol
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      11-16-2010, 12:24 AM   #14
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lol I got you
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      11-16-2010, 09:23 AM   #15
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Quote:
Originally Posted by themyst View Post
I might head on over to TSADyno right after I throw all my mods on and dyno right away I think I can hit 440whp in cold weather lol
Thats sick, can you post the dyno if you decide to go? I feel a lot more power in this cold weather...I am going to put mine on the dyno as soon as I can figure out wtf is up with my procede and install my fmic and dp's. Ordered um, got um here, now just gotta put um on.
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