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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > Weird problem with my car (n55)



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      07-04-2011, 05:56 PM   #1
shockin330i
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Weird problem with my car (n55)

So I wake up Sunday morning, get dressed for work and walk over to my car. Try to turn it on and nothing. Car won't turn. Weird thing is I got 0 error codes. Plugged in my laptop. No codes. The car would keep trying to start unless I took my foot off the pedal..

Tried again at night, reset everything on my procede etc, still wouldn't turn.

Fast forward to right now. I went out side, unlocked the car and I noticed something. The pump wasn't priming. Anyone with a n55 knows that when you unlock your car it starts priming itself( you can hear it). So I reset everything again on the command center, plug in the laptop and try to turn it on again. Still nothing and no codes. So I tried the old pump the throttle method and for some reason it worked... I tried turning it on and kept my left foot on the brake, right foot pumping the gas, low and behold the bitch turned on. Went for a drive, zero codes, no limp, no hiccups..

Any other n55 owners go through this before??
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      07-04-2011, 07:02 PM   #2
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i might give that pump the throttle technique when i get home haha.
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      07-04-2011, 07:07 PM   #3
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thats f$% up? no idea? maybe the signal did not get to the pump?
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      07-04-2011, 08:31 PM   #4
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Yeah, the pump still isn't priming. I'm wondering if I let it sit over night if it will fail to start again...
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      07-04-2011, 08:38 PM   #5
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Yake off your mods and go to BMW. The pump should prime now when you unlock the car... you wanna take care of this problem before it gets worse
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      07-04-2011, 08:41 PM   #6
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Quote:
Originally Posted by Brey335i View Post
Yake off your mods and go to BMW. The pump should prime now when you unlock the car... you wanna take care of this problem before it gets worse
Even when I bypass the procede, it doesn't prime. I'll try and take it off 2morrow. Damn thing is a bitch to remove.
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      07-04-2011, 09:55 PM   #7
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Quote:
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Even when I bypass the procede, it doesn't prime. I'll try and take it off 2morrow. Damn thing is a bitch to remove.
Even if you bypass it, the car would have issues if a connection was bad
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      07-05-2011, 02:50 PM   #8
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      07-05-2011, 03:12 PM   #9
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That's why i am selling my bmw lol...
lol. What are you going with after all?
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      07-05-2011, 03:29 PM   #10
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This car is starting to show a lot of problems :/
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      07-05-2011, 03:32 PM   #11
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This car is starting to show a lot of problems :/
What else have you experienced?
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      07-05-2011, 08:22 PM   #12
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Wonder if it's battery related??? You drive the car every day right? I guess you had power for the car to crank ... So on the other hand it may be a bad connection or a failing pump
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      07-05-2011, 08:27 PM   #13
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lol. What are you going with after all?
Still trying to figure a way to get someone to take over on it lol...

But going to try for a viper.

Honestly i wish i could get a viper and keep the n55 but only if my payments where under $400 lol.
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      07-05-2011, 08:36 PM   #14
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"pump dat biatch, and she turns on...:"

ernie what's your millage at right now?
i know it's past 24K.
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      07-06-2011, 03:40 AM   #15
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32k miles. all the lights and radio worked so i doubt it was battery related...
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      07-06-2011, 08:08 AM   #16
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I believe mine has stopped priming as well. Getting random stalls in first and second daily now. Pulling my Procede this weekend and making an appointment with the dealer. Haven't checked for codes but I haven't gotten any dash lights or limp mode. Just suddenly loses power/stalls like it isn't getting fuel. 3500 miles here.
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      07-06-2011, 08:14 AM   #17
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DAMN! I just reached 5.5K and no problems yet... Makes me iffy to keep modding the car...
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      07-06-2011, 09:01 AM   #18
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^ i dont think it has anything to do with the tunes or mods. i think it may be dealing with the priming. ill going to pull the pocede off tonight and take the car in tomorrow.
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      07-06-2011, 09:06 AM   #19
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ya, keep us updated please.
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      07-06-2011, 09:42 AM   #20
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Sorry to hijack your thread but figured it may be relevant. Little update... Set map zero yesterday just to see if anything was different... Pump did prime, car started fine. No issues on the way to work but it is a short drive at 8 miles. Not suggesting it is the tune (worked fine for months) but I do want to rule
It out. Will keep driving like this for a few days and see if I keep having problems. Was planning to pull my tune anyway as I understand there may be a new software update I should get before I install my FMIC. What software version are you running shockin?
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      07-06-2011, 10:08 AM   #21
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Was planning to pull my tune anyway as I understand there may be a new software update I should get before I install my FMIC. What software version are you running shockin?
You pull out your procede to update it? THat's a PIA when you can just update it without taking it out.


@ Shockin330i

Weird how that is happening, mine has 12k miles and I have only (Not tune related) experienced long crank a couple times. I hope you get your situation resolved.
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      07-06-2011, 10:24 AM   #22
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Just an FYI, I believe the pump should only prime if the fuel pressure sensor reads no (or little) pressure. Once pressure is built, it does tend to maintain for a little while when the engine is turned off. But I would imagine that first thing in the morning (when the car hasn't been driven all night), you will always hear it prime. But just because it doesn't for some reason, doesn't mean that the HPFP is failing.

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