Violent Chassis Vibrations in First

About a month ago, I began to have this unusual problem with an unknown source. The entire car will begin to shake almost as if driving over rumble strips (seems to be originating from the rear). As the title says, it is most noticeable in first gear and above 5k rpm but ONLY if the car is accelerating at a considerable rate. The shaking doesn't occur when the engine speed is increasing gradually and/or held at the same rpm even above 5k.

This used to happen in second gear as well but hasn't been as bad recently and the vibrations weren't as severe as they were in first.

Whatever this is I am not too concerned; I am not one to take it all the way up to redline in between every light but for the 4 years I've owned this car I have never had a problem like this before.. That being said, I am sure this problem can only get worse until it starts to begin vibrating at lower engine speeds.

If any of you have heard of something like this before, please let me know and comment below! All I am trying to do is find a starting place for a diagnosis procedure and pinpoint exactly what is malfunctioning.

Thank you for your time.

JC

Violent Chassis Vibrations in First

Steering hard to turn

I replaced all belts and pulleys on my 325i - noticed the ps pulley had some play - and am getting a lot of "rattle" from the front of engine when idle.

Screw driver test on pump showed a lot of noise coming from that area - so I replaced the pump with a Napa remanufactured one.

That also has a similar play on the pulley (I pulled a pump from a '99 in the junk yard and it had no play - but does not fit my '03).

Anyway rattle is still there - I think vanos now - but after I refilled pump reservoir and bled (turned lock to lock a few times with cap off) - I get a slight hum from pump when turning the wheel at parking speeds and sometimes the steering is very heavy at park speeds.

Fluid level with BMW ATF is good. Old fluid came out red - and looked fine. Put in redline d4 atf to

Above 10 mph steering is fine (and feels tighter than the old pump - in a good way)

Do I have a bad pump or should I check something else ?

Steering hard to turn

Cooling System Saga

Hi All,

Long time lurker and infrequent poster. Thought I would share a bit of a story about my Cooling System nightmare. Maybe it will help someone along the way. And no, I have not overheated my car even though I've had so many problems with this stupid cooling system. :D

First off, thank you to ECS Tuning for having awesome kits and support. Also a big thanks to Mango for the guides. And... here's the story.

I've had this 2004 Facelift 330Ci for the past 11 years. Never really had any issues until I decided to do a cooling system refresh as many have done. Once I did, back in 2010 and 100k mi, I kept having a small amount of coolant coming from the expansion tank area and the thermostat housing. The original design on this is crap! The connector hole builds up coolant crust over time. I've had to replace this stupid thing 3 times already.
Attachment 658442

For the past 7 or so years, I have just been filling up once every 2 months or so never really figuring out where the problem was since such a small amount of fluid was coming out.

Fast forward to a few months ago, I found that my coolant was spewing out so fast that I couldn't drive more than a few hundred miles without having to refill. Time for another refresh. Updated part from ECS. Finally!!
Attachment 658450

After installing everything... I still had a major leak from the expansion tank cap. Ran it for about 100 mi with refills and I finally found it. There was a leak in the stupid plastic radiator end cap. If you can't pinpoint the problem quickly, consider the radiator. It's only like 200 bucks and a couple hours of your time.

Installed the new radiator... still a leak. Turns out the new Behr Meyle radiator connection is smaller than the old radiator and it stretched out the upper radiator hose rubber seal. Called ECS and they sent me a new upper radiator hose for free since I just spent a buncha money with them and one of their parts "failed." Awesome customer service and would definitely recommend dealing with them. :thumbsup:
Attachment 658458

Again, a big thanks to Mango for the guides and anyone else who contributes to this forum. It has been a huge help troubleshooting annoying things with this car over the years.

My car now has over 192k mi and running fairly strong. Probably have to do piston rings since it started to eat oil recently. :tsk::censor: I can easily see why these cars run past 300k mi on the same engine.

:eeps::eeps:
TL;DR Check the plastic radiator end caps for pinhole leaks if your car is spewing coolant.

Now, on to the next garage project...
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Cooling System Saga

Blow off valves sound!!! ASA Turbomex Tm12

Hello there,

I bought my supercharger kit in second hand, and everything works fine, but while in vacuum the blow off valves are making to much noise... Im boost (blow off valve close) its very quiet, in vacuum (blow off valve open) its like a permanent agressive dump valve sound...

Anyone with this problem?

Driving in the highway keeping de 60miles per hour, its screams like a dump valve sound, if i push the accelerator (boost, blow off valve closes) than i only ear the exhaust.

Blow off valves sound!!! ASA Turbomex Tm12

Anybody here knows Ms. Kate Upton personally?

When I met her she seems pretty nice and friendly, but I've heard others said sometimes the opposite. I don't know. I guess it depends on the situations.
I know Magic Johnson was a nice guy, but I once heard some guy who called in a talk show saying bad stuffs about him.

I just want clarify when I met here she seems nice, but there could be others who have some other motivation.

Anybody here knows Ms. Kate Upton personally?

WTB Side Mirror with Ribbon

Looking for passenger side mirror with ribbon connector for my 04 330ci vert, color doesn't matter my cover is still in good shape just need the whole assembly, or can someone tell me how to retrofit the 6 or 12 pin connector to the ribbon style? thanks!

WTB Side Mirror with Ribbon

My e46 muffler delete

https://www.youtube.com/watch?v=34CuoPlFsoE
This is for those of you who are thinking about doing a muffler delete, I spent a total of 150$ at a shop and paid 65$ for the tips

My e46 muffler delete