Go Back   The Unofficial BMW M5 Messageboard (m5board.com) > BMW M5, M5 Touring, M6 and Z8 Forums > E34 M5 Discussion
HELP! My car wont rev! HELP! My car wont rev!
Register Blogs FAQ Members List Social Groups Calendar Search Today's Posts Mark Forums Read

E34 M5 Discussion 1988-1995 Sedan and Touring

Reply
 
LinkBack Thread Tools Search this Thread Rate Thread Display Modes
Old 17th October 2009, 01:54   #1
m5broonie
Junior Member, warming up (<31 posts)
 
Join Date: Jul 2009
Location: FALKIRK, SCOTLAND

Garage: E34 M5 3.8 FIVE SPEED, AVUS BLUE AND SILVER

Sales Feedback: (0)

Thanks: 0
Thanked 0 Times in 0 Posts
HELP! My car wont rev!
Hello, hope someone can help me! my `93 M5 3.8 has a stramge problem. My car starts and idles well and drives nice on part throttle, but when I try to use more than one third throttle the engine dies. I took the car to a local garage who diagnosed that the MAF had failed but £500 and one new MAF later the car is no better! I have had the car for 4 years and have done over 30000 miles in it (it is now at 150000) and it has never missed a beat untill now. I hope someone can shed some light on what is wrong with my pride and joy!
m5broonie is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post! Add this post to your Facebook Profile Add this post to MySpaceStumble this Post!Google Bookmark this Post!Live Bookmark this Post!
Reply With Quote
Old 17th October 2009, 13:54   #2
1day
Member, Sport: On DSC: Off
 
Join Date: Dec 2008
Location: London

Garage: E34 M5 1991 white

Sales Feedback: (0)

Thanks: 66
Thanked 22 Times in 20 Posts
quick thoughts

- is the MAF receiving enough air? (air filter / air box intake blocked)
- throttle position sensor (lot's of posts on here I think)
- fuel pressure (pump not supplying enough for more than part throttle, blockage in the pipe / tank?)

can you describe in a bit more detail what happens when you apply more throttle?
1day is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post! Add this post to your Facebook Profile Add this post to MySpaceStumble this Post!Google Bookmark this Post!Live Bookmark this Post!
Reply With Quote
Old 19th October 2009, 10:01   #3
farrell
Company Representative for DARJAC Racing
 
farrell's Avatar
 
Join Date: Jul 2003
Location: Residential home
Age: 73

Garage: E34 //M5 3.8 Avus blue

Sales Feedback: (4)

Thanks: 117
Thanked 157 Times in 113 Posts
Hello
Lots of maybes here !
Get the vehicle to someone who can diagnose the fault, system by system.
Changing parts back & forth will not help if you have a wiring fault ( very possible)

Cheers
Farrell
__________________
www.darjac-racing.co.uk
farrell is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post! Add this post to your Facebook Profile Add this post to MySpaceStumble this Post!Google Bookmark this Post!Live Bookmark this Post!
Reply With Quote
The Following User Says Thank You to farrell For This Useful Post:
1day (20th October 2009)
Old 22nd October 2009, 20:32   #4
m5broonie
Junior Member, warming up (<31 posts)
 
Join Date: Jul 2009
Location: FALKIRK, SCOTLAND

Garage: E34 M5 3.8 FIVE SPEED, AVUS BLUE AND SILVER

Sales Feedback: (0)

Thanks: 0
Thanked 0 Times in 0 Posts
HELP! My car wont rev!
Thanks to those that replied to my message. I have changed the tps, the cam sensor, the crank sensor, the airfilter, plugs, maf, and the fuel pump in the tank. I work away from home and when I drove there last weekend the car felt like it was getting worse. When I used more than quarter throttle the engine lost power but if I lifted off only slightly the engine would pick up again, but reapplying the throttle made it die again. Strange thing is when I picked my car up this afternoon it drove home perfectly normal, reving smoothly with lots of power! This car seems to have a mind of it's own! Thanks in advance for any suggestions and advice.
m5broonie is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post! Add this post to your Facebook Profile Add this post to MySpaceStumble this Post!Google Bookmark this Post!Live Bookmark this Post!
Reply With Quote
Old 22nd October 2009, 22:26   #5
///Manuel
Addicted Member (>300 posts)
 
Join Date: Apr 2008
Location: Denver, CO

Garage: various cars

Sales Feedback: (0)

Thanks: 39
Thanked 18 Times in 16 Posts
Fuel pressure regulator, faulty coils, bad ground, it could be so many things...
__________________
///M Driver Touring Pics
 LE Picture
///Manuel is offline  
Digg this Post!Add Post to del.icio.usBookmark Post in TechnoratiFurl this Post! Add this post to your Facebook Profile Add this post to MySpaceStumble this Post!Google Bookmark this Post!Live Bookmark this Post!
Reply With Quote
Reply

Bookmarks

« Previous Thread | Next Thread »

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Linear Mode Linear Mode
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
Trackbacks are On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
car wont start HELP PLEASE bobM5 E39 M5 and E52 Z8 Discussion 9 4th March 2009 15:53
help!!car wont start Alhindi E34 M5 Discussion 27 22nd December 2008 13:11
Help, car wont start Alhindi E39 M5 and E52 Z8 Discussion 4 26th November 2008 05:02
A car U wont know ;) [Bizzarini] love_lebanon88 GTBoard.com: General Sportscars 10 23rd January 2007 02:01
M5 wont rev past 3000rpm in any gear...... MThis E39 M5 and E52 Z8 Discussion 12 3rd October 2004 19:34

eXTReMe Tracker

All times are GMT +2. The time now is 11:56.
Contact Us - The Unofficial BMW M5 Homepage! (Former URL: bmwm5.com Now: m5board.com) - Archive - Top

Everything Copyright 2000-2008. Do not use ANYTHING from this site without written permission. All images, graphics, sound files, video files and text appearing on this web site are the exclusive property of m5board.com and are protected under international copyright laws. All images, graphics, sound files, video files and text on this site are for on-screen and on-site viewing and listening only. No part of this web site may be reproduced, copied, saved, stored, manipulated, or used in any form for personal or commercial purposes without the prior written permission of m5board.com. Use of any image or graphic as the basis for another photographic concept or illustration is a violation of the copyright. Any copyright infringement will be prosecuted to the full extent of federal and international copyright laws. M5board.com is an enthusiast board and we don't condone any dangerous activity. Our airfield events are completely safe based on years of experience, we conduct them during clear visibility with mature participants that have several years of experience with high-performance automobiles, large unobstructed run-off zones on sealed off private former military airbases and we clearly mark the braking zones. If inexperienced with high speed driving we do not recommend organizing your own event but attending a high-performance driving school. The use of the term "BMW" on this site is for reference only, and does not imply any connection between m5board.com and BMW AG or BMW North America.
Page generated in 0.09916 seconds with 11 queries