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  1. 3 Series & 4 Series
    I've been trying to get my 2008 335i to exceed 3000 RPM but I've been out of luck. If you guys had any ideas on what part(s) could cause this that would be great. So far I've replaced all the coil packs, plugs, one injector, the boost solenoids, various sensors, and the HPFP. I was thinking the...
  2. E90/E91/E92/E93 (2006 - 2013)
    I have 2007 E90 320d 182.000 miles. I've been using it for a long time without any problem. But there was a problem that I noticed 20,000 miles ago, which I didn't care about at first. While the vehicle was slowing down, the rev counter started to shake after 2000 rpm. At first it didn't feel...
  3. E46 (1999 - 2006)
    Greetings everyone. It's been some weeks since I noticed a knocking noise, I can only ear it when I roll down the windows and there are some kind of wall to make that sound bounce inside the cabin. I made a quick inspection to check from where it comes and it comes from the back of the engine...
  4. E60 / E61 (2004 - 2010)
    Hey guys, here's the rundown, I bought a 2004 bmw 530i with 137,000 on it three months ago, when I first got it, the car was fine, since then it's developed a rpm bounce anywhere between 20-50 mph. Mostly when accelerating. Rpms jump 1-2 when this first started happening, It gave me a code for...
  5. E90/E91/E92/E93 (2006 - 2013)
    Can someone familiar with this issue comment? What is happening to my engine is that at idle it sits perfectly at 600RPM like normal, then every approx 10-15 seconds the engine shutters for a fraction of a second, drops to 500RPM and then jumps back to 600RPM. This process keep repeating...
  6. E90/E91/E92/E93 (2006 - 2013)
    Hi All, I've got a bmw 320i e90 2009 Lci model that has an N42N engine. These engines are common for value steam seal leaks. I've replaces the value steams seals on my engine at 200,000km and the oil levels are stable between the service intervals. It got a starting issue when the engine is...
  7. X5 E70 (2007 - 2013)
    Anyone noticed this too? The electric fan comes ON and engine RPM spikes from idle speed to around 800-900 when steering wheel is turned all the way to the left or right? This is not new to me, but I thought I run this to BimmerFest for thoughts: I should add this that at that point when...
  8. F22 / F23 2 Series (2014 - Current)
    Hi all, I have a '16 RWD M235i Manual with no mods, with ~30,000 miles. This issue has plagued me since around 15,000 miles (rough guess, it's been a long time, about a year and a half). Occasionally, when I'm cruising along at around 1800 to 2200 RPMs with throttle depressed, and then let off...
  9. F10 / F11 (2011 - 2016)
    2013 BMW 535i(F10) Noise, Engine? or AC? During driving, I can hear the noise from 2500-3000 rpm. So, I tested and found it as below. In P mode, when the engine is kept at 3000rpm and the A / C is turned on, it falls to 2100-2200rpm. And when I turn off the A / C again, it goes up to 3000rpm. A...
  10. E36 M3 (1995-1999)
    1999 M3 manual Not turbo or supercharged. I just replaced the water pump(metal impellers), thermostat, radiator and radiator hoses. Also I replaced my fan with the euro one, I got this kit (https://www.ecstuning.com/b-assembled-by-ecs-parts/european-fan-kit/11522243303kt/). After I finished...
  11. E90/E91/E92/E93 (2006 - 2013)
    hello everyone, basics out of the way- i drive an automatic 2007 e92 335i with 85k miles, not under warranty. for the past few weeks i have noticed some strange things happening with my car, the main one being a strange lurching forward when going slow. anywhere from 1-40 mph, my car seems to...
  12. E63 / E64 6 Series (2004 - 2010)
    I have a 2008 650i coupe. When I turn on the airco, the idle rpm go from 500 to 750...it makes the car very 'jumpy' and I am concerned it takes a toll on the gearbox...however, it has been been doing this for as long as I have the car (6 years) without issues so I assume this is normal, but...
  13. E90/E91/E92/E93 (2006 - 2013)
    Dear All, When driving the car on the high way, and when coming into a stop i press the brakes in order to lower the speed then release the gas pedal when the RPM drops below 1.5K and while decreasing, suddenly the RPM fluctuates (goes up and down). What can cause such symptoms ? please advice...
  14. E60 / E61 (2004 - 2010)
    I have a 2007 530XI, it had a misfiring problem, it read cylinder 5 was misfiring, so I did a spark plug job, replaced all 6. Thought it did the trick, the error code stopped popping up, and it definitely ran smoother. After an hour or so, I could still feel a drop in the engine, and it goes...
  15. E90/E91/E92/E93 (2006 - 2013)
    Hi BMW enthusiasts! I have a problem with my E90 381i 2009, 95 000km, some times the rpm suddenly drops from around 900 to 500, and then jumps back up and then drops again, happens 3-5 times, before it dies or I give it some gas. This mostly happens when the car is in neutral, and sometimes...
  16. E46 (1999 - 2006)
    Hey guys - This is an exact copy and paste of my post on reddit.com/r/BMW. I'm looking for some serious advice. Disclaimer: Assume that I am car-illiterate. Damn close to it. A little background: 2004 330xi, about 104k miles, and just had a lot of work done to it. About a month ago, my SES...
  17. E36 (1991 - 1999)
    Hello!! Everyone this is my first post. My name is Dom and I have recently bought a 1998 323Ti Hatchback Eu spec (5-speed manual shift) Bmw. [It has heated seats and lights that illuminate the floor when i open the door]I am looking for as much information on the car as possible. I have noticed...
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