BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

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      06-30-2007, 07:03 PM   #1
emm3tt
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Any N54 reliability issues so far?

I wanted to see if any 535i or 335i owners had experienced any reliability issues with the N54 motor yet. I'm salivating for a 135i but I don't want to be left in the lurch with an unreliable turbocharged engine.
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      06-30-2007, 09:20 PM   #2
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Browse the "general" section, this matter has been discussed several times there. I'm sure you'll find some useful insight.
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      06-30-2007, 09:22 PM   #3
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Overheating & high pressure fuel pump issues.
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      06-30-2007, 09:26 PM   #4
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Overheating or high oil temps?
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      06-30-2007, 09:37 PM   #5
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Quote:
Originally Posted by Deutsch View Post
Overheating or high oil temps?
There are 335 owners that have tracked their vehicle and it has overheated due to oil temps (limp mode).
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      06-30-2007, 09:40 PM   #6
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Quote:
Originally Posted by TheUltimateDriver View Post
There are 335 owners that have tracked their vehicle and it has overheated due to oil temps (limp mode).

Kind of figured it's the same thing, just read more "high oil temperatures' than overheating, which was never mentioned.
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      07-02-2007, 08:19 AM   #7
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Quote:
Originally Posted by TheUltimateDriver View Post
Overheating & high pressure fuel pump issues.
someone at bimmerfest estimated that 10% of the fuel pumps were failing but i'm not sure if that's accurate or a current figure.
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      07-02-2007, 02:32 PM   #8
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Looks like there will be market for an after-market oil cooler!
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      07-04-2007, 06:39 PM   #9
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Quote:
Originally Posted by mikeo View Post
Looks like there will be market for an after-market oil cooler!
BMW is retrofitting a second oil cooler for 335 people who complain and have experienced limp mode due to the high temps...
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      07-09-2007, 01:05 PM   #10
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Quote:
Originally Posted by dmboone25 View Post
BMW is retrofitting a second oil cooler for 335 people who complain and have experienced limp mode due to the high temps...
Makes me wonder if the 135i with its, I assume slightly smaller engine bay, will experience even worse oil temp issues than the 335i.
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      07-21-2007, 02:23 AM   #11
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I think the fuel pump issue is a bigger menace than the oil temperature problem.
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      07-26-2007, 12:16 AM   #12
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I dont know oil temp can be just as detrimental to a turbo as fuel problems.
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      07-27-2007, 01:37 PM   #13
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The motor on the 135 will be called the N54HP it will be fixed of all current 335i problems such as the fuel pump and oil temperature.
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      07-27-2007, 01:41 PM   #14
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Quote:
Originally Posted by Driv3r View Post
The motor on the 135 will be called the N54HP it will be fixed of all current 335i problems such as the fuel pump and oil temperature.
What is your source to back up that statement?
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      07-28-2007, 04:36 PM   #15
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Quote:
Originally Posted by mikeo View Post
What is your source to back up that statement?
Best friends brother inlaw who overheard a discussion while working as a car jockey at the local stealership.
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      07-28-2007, 04:44 PM   #16
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Quote:
Originally Posted by inTgr8r View Post
Best friends brother inlaw who overheard a discussion while working as a car jockey at the local stealership.
Well then... it must be true!! :iono: Thanks for clearing that up.
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      07-30-2007, 11:22 AM   #17
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By the time N54 is in the 135i, bmw will have over a year worth of data on 335 & 535i's. So at least we won't have the 1st batch of issues that plague all new engines.
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      08-03-2007, 07:58 AM   #18
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Quote:
Originally Posted by Eventually View Post
By the time N54 is in the 135i, bmw will have over a year worth of data on 335 & 535i's. So at least we won't have the 1st batch of issues that plague all new engines.
The N54 will definitely evolve, but I'm still not comfortable with an engine that runs so hot.
My S54 barely breaks 100 C (212 F) at the track & never on the street (95 C).
I'm looking at the 1er as a long term daily driver.
Because of the high oil temp, I would definitely go 128i if full M Sport was available.
(not holding my breath on that one.... )
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      08-03-2007, 10:57 AM   #19
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Quote:
Originally Posted by inTgr8r View Post
The N54 will definitely evolve, but I'm still not comfortable with an engine that runs so hot.
My S54 barely breaks 100 C (212 F) at the track & never on the street (95 C).
I'm looking at the 1er as a long term daily driver.
Because of the high oil temp, I would definitely go 128i if full M Sport was available.
(not holding my breath on that one.... )
Yeah... I'm not too happy with the heat issue either.

I can remember once when I was traveling with a van and I was driving a 325e. I was cruising at 85 for a couple of hours and when we pulled over the van was running so hot that the paint had blistered on it's hood. OTOH you could still touch the 325e's engine. That powerplant definitely ran cool. :roundel:
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