E46 BMW Social Directory E46 FAQ 3-Series Discussion Forums BMW Photo Gallery BMW 3-Series Technical Information E46 Fanatics - The Ultimate BMW Resource BMW Vendors General E46 Forum The Tire Rack's Tire Wheel Forum Forced Induction Forum The Off-Topic The E46 BMW Showroom For Sale, For Trade or Wanting to Buy

Welcome to the E46Fanatics forums. E46Fanatics is the premiere website for BMW 3 series owners around the world with interactive forums, a geographical enthusiast directory, photo galleries, and technical information for BMW enthusiasts.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us.

Go Back   E46Fanatics > E46 BMW > General E46 Forum

General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

Reply
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 03-18-2013, 05:04 AM   #1
ThreeOhFive
Registered User
 
Join Date: Dec 2011
Location: Wisconsin
Posts: 232
My Ride: 2002 330i
Engine overrevved, runs rough

I went to pass a vehicle a vehicle, hit third, I think I bumped it outta third into nuetral. I was in it hard, rpms raced to redline. It overrevved pretty bad. The car immediately started running rough and shut off. I was able to limp it a few more miles. It will not idle, if rpms drop below 3k, it dies. Checked under the hood, ac belt shot off, it's still in one piece. It's not knocking, no ses??? It's missing pretty bad, though under 4k.. If you rev it, it sounds okay, as long as its above 4k.

Did I blow it? It had an engine replacement at 69k, it has 107.5k. So what 39k miles on the block?

This is so crappy.
__________________

Last edited by ThreeOhFive; 03-18-2013 at 06:10 AM.
ThreeOhFive is offline   Reply With Quote
Ads by Google

Guests, get your FREE E46Fanatics.com membership to remove this ad.
Old 03-18-2013, 08:01 AM   #2
fgump
Registered User
 
Join Date: Oct 2011
Location: Apex, NC
Posts: 74
My Ride: '01 325i
Money shift

Likely bent/broken valves or springs. Compression check will probably reveal 0psi in a few cylinders. Don't drive it or run it.
__________________

'01 325i
161k miles
bone stock
fgump is offline   Reply With Quote
Old 03-18-2013, 08:17 AM   #3
mgilardi86
Registered User
 
Join Date: Feb 2012
Location: MA
Posts: 53
My Ride: 02 ///M3 6MT Coupe
Um if you knocked out out of gear even if you had it floored, it isn't going to overrev. The ignition would cut out before then, you would have had to physically put it into too low a gear which doesn't sound like you did. Check all your vacuum lines first
__________________
mgilardi86 is offline   Reply With Quote
Old 03-18-2013, 08:23 AM   #4
ThreeOhFive
Registered User
 
Join Date: Dec 2011
Location: Wisconsin
Posts: 232
My Ride: 2002 330i
My car has no rev limiter? It had some boltons when I bought it, maybe a tune as well. Ignition did not cut it out, it went to 7k, I immediately got off the throttle, but it stayed up there for a few seconds.
__________________

Last edited by ThreeOhFive; 03-18-2013 at 08:31 AM.
ThreeOhFive is offline   Reply With Quote
Old 03-18-2013, 08:36 AM   #5
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,037
My Ride: 2004 330Ci OBM
Our cars are supposed to have rev limiters. That's a serious **** up on the PO's part. You probably just need a new head, not a whole new engine. Take this one to a mechanic.

Last edited by WDE46; 03-18-2013 at 08:37 AM.
WDE46 is offline   Reply With Quote
Old 03-18-2013, 08:51 AM   #6
ThreeOhFive
Registered User
 
Join Date: Dec 2011
Location: Wisconsin
Posts: 232
My Ride: 2002 330i
So the long block should be okay? It's not knocking... Just missing really bad.
__________________
ThreeOhFive is offline   Reply With Quote
Old 03-18-2013, 08:57 AM   #7
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,037
My Ride: 2004 330Ci OBM
I don't see why the block would be damaged. All the M54 money shifts (huge 9k rpm over revs) I've seen have only bent the valves severely. You may have just slightly bent some. You'll have to take it to a mechanic for diagnosis though. I don't see why 7000 rpm would blow up this engine. That, and I don't see why anyone would ever totally remove the rev limiter. It's often increased to almost 7k.
WDE46 is offline   Reply With Quote
Old 03-18-2013, 09:50 AM   #8
ThreeOhFive
Registered User
 
Join Date: Dec 2011
Location: Wisconsin
Posts: 232
My Ride: 2002 330i
That's not cheap. $700 used! What do you all think labor in terms of hours will be? My shop charges about $86 an hour.
__________________
ThreeOhFive is offline   Reply With Quote
Old 03-18-2013, 09:56 AM   #9
ThreeOhFive
Registered User
 
Join Date: Dec 2011
Location: Wisconsin
Posts: 232
My Ride: 2002 330i
I did force the car to drive about another mile to a parking lot, and have started and revved it a few times, trying to see what I could figure out. I won't mess with it anymore, hopefully I didn't make it any worse. I have to tow it an hour home. I've got a car from my parents to last me while I get this fixed. Looks like this repair will be $1,500. I've had the car two weeks, working on $2500 in repairs that have come up in 700 miles.
__________________
ThreeOhFive is offline   Reply With Quote
Old 03-18-2013, 10:02 AM   #10
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,037
My Ride: 2004 330Ci OBM
Quote:
Originally Posted by ThreeOhFive View Post
I did force the car to drive about another mile to a parking lot, and have started and revved it a few times, trying to see what I could figure out. I won't mess with it anymore, hopefully I didn't make it any worse. I have to tow it an hour home. I've got a car from my parents to last me while I get this fixed. Looks like this repair will be $1,500. I've had the car two weeks, working on $2500 in repairs that have come up in 700 miles.
When you do get this fixed, make sure the rev limiter is back in place at 6500 rpm.
WDE46 is offline   Reply With Quote
Old 03-18-2013, 10:16 AM   #11
ac_2007
Registered User
 
ac_2007's Avatar
 
Join Date: Apr 2010
Location: Toronto
Posts: 6,973
My Ride: 2004 M3, 2001 325i
With what you described (popping out of 3rd and hitting 7K rpm), NO damage should have occurred.
You may raise the rev limiter to 7k with a tune, but I've never heard of anyone ever removing the limiter.

Did the RPM needle pin itself a bit at its physical limit just over 7K?
I've had a friend money-shift my car once, and yours truly has done it as well. Luckily there was no damage, and both times the engine revved well over 7K.
__________________
ac_2007 is offline   Reply With Quote
Old 03-18-2013, 10:47 AM   #12
lcoleman
Registered User
 
Join Date: Mar 2007
Location: the barnyard
Posts: 2,458
My Ride: '79 Massey Ferguson
I would investigate why the a/c belt shot off before condemning the head.
__________________
lcoleman is offline   Reply With Quote
Old 03-18-2013, 10:51 AM   #13
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,037
My Ride: 2004 330Ci OBM
Quote:
Originally Posted by lcoleman View Post
I would investigate why the a/c belt shot off before condemning the head.
lcoleman always coming in and keeping us on track by talking some sense. good man. I am also curious why this happened. I definitely overlooked this.
WDE46 is offline   Reply With Quote
Old 03-18-2013, 01:10 PM   #14
ThreeOhFive
Registered User
 
Join Date: Dec 2011
Location: Wisconsin
Posts: 232
My Ride: 2002 330i
Not sure as to the exact rpm, I didn't see the tach. Had to be 7k, it was coming down past 6500 when I looked. It just got one big rev for like 2 seconds. It was weird I hit third, felt it pull, and the rpms just soared out of nowhere. I'm not new to a manual. This is my third manual trans. Never missed a gear in this car.

Idk what happened. But when it was coming down from the rev, it was super slow, and it shut off on me. It was having atough time starting, but I did get it to get up to 40 and a mile further.

On inspection of engine bay, oil was fine, and belt had shot off. In the prior weeks, I have been hearing an airplane noise coming from the belts when cold, a weird hum, and high pitched noise. Seemed like an idler pulley. Also detected noise from the water pump. It was making noise. A scratching scuffing noise after revs. All this was getting replaced Tuesday. Have the parts in the car.
__________________
ThreeOhFive is offline   Reply With Quote
Old 03-18-2013, 01:17 PM   #15
ThreeOhFive
Registered User
 
Join Date: Dec 2011
Location: Wisconsin
Posts: 232
My Ride: 2002 330i
As for the limiter, it revs in neutral to 67-7000. Only done it once though. I usually was nice to this car. I was being a bit hard on it before this happened. I never redlined it though, one good pull to 100, and it blew on me right after that. I was coming up on probably 60 or 70. 3/4 throttle. Then all hell broke loose, it started screaming.
__________________

Last edited by ThreeOhFive; 03-18-2013 at 01:19 PM.
ThreeOhFive is offline   Reply With Quote
Old 03-18-2013, 07:29 PM   #16
ThreeOhFive
Registered User
 
Join Date: Dec 2011
Location: Wisconsin
Posts: 232
My Ride: 2002 330i
Zimbrick BMW of Madison will be looking at it in the next few days.
__________________
ThreeOhFive is offline   Reply With Quote
Old 03-18-2013, 10:48 PM   #17
lcoleman
Registered User
 
Join Date: Mar 2007
Location: the barnyard
Posts: 2,458
My Ride: '79 Massey Ferguson
Quote:
Originally Posted by WDE46 View Post
lcoleman always coming in and keeping us on track by talking some sense. good man. I am also curious why this happened. I definitely overlooked this.


Quote:
Originally Posted by ThreeOhFive View Post
In the prior weeks, I have been hearing an airplane noise coming from the belts when cold, a weird hum, and high pitched noise. Seemed like an idler pulley. Also detected noise from the water pump. It was making noise. A scratching scuffing noise after revs. All this was getting replaced Tuesday. Have the parts in the car.
Personally, I would replace these things (plus the a/c belt) before going any further.

It is really hard to overrev a car in neutral, since there is a rev limiter....even if it is raised with a chip from a reputable company. 7K rpms should not float valves or cause any catastrophic failure.
__________________
lcoleman is offline   Reply With Quote
Old 03-18-2013, 10:54 PM   #18
ac_2007
Registered User
 
ac_2007's Avatar
 
Join Date: Apr 2010
Location: Toronto
Posts: 6,973
My Ride: 2004 M3, 2001 325i
__________________
ac_2007 is offline   Reply With Quote
Old 03-18-2013, 11:15 PM   #19
lcoleman
Registered User
 
Join Date: Mar 2007
Location: the barnyard
Posts: 2,458
My Ride: '79 Massey Ferguson
Ahh, ruff...just how your mother likes it.....Trebek!
__________________
lcoleman is offline   Reply With Quote
Old 03-19-2013, 08:28 AM   #20
WDE46
Registered User
 
Join Date: Sep 2012
Location: Old Greg's Cavern
Posts: 9,037
My Ride: 2004 330Ci OBM
Quote:
Originally Posted by lcoleman View Post
Ahh, ruff...just how your mother likes it.....Trebek!
I'll take "The Rapist" for 600!
WDE46 is offline   Reply With Quote
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Censor is ON





All times are GMT -5. The time now is 10:29 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
(c) 1999 - 2011 performanceIX Inc - privacy policy - terms of use