new to BMW's - BMW Forum - BimmerWerkz.com
BMW Forum BMW Forum

Auto Insurance

» Featured Product
Wheel & Tire Center

Go Back   BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E21, E30)
Register Home Forum Active Topics Gallery / Showroom Auto Loans Garage Search Today's Posts Mark Forums Read Auto EscrowInsurance

3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

BimmerWerkz.com is the premier BMW Forum on the internet. Registered Users do not see the above ads.
Reply
 
LinkBack Thread Tools Display Modes
Old 08-28-2004, 11:22 AM   #1 (permalink)
n00b
 
Join Date: Aug 2004
Car:
Posts: 4
Photos:
fisch325is is an unknown quantity at this point
I just bought my 16 yr old son his first car a 88 325is. He loves the 5 speed,
handeling, classic styling, the whole German feeling. Then all a sudden, the car starts bucking missing whatever. We buy the Bentley manual and start reading. With 152k miles and all mechanical documentation stopping at 98k we started with replacing plugs, wires,cap, rotor, filters and checking the timing. Still runs like sh..
Took it to our mechanic, he admits he's not having much experience with BMW's. He said the # 2-4-6 cylinders aren't getting the ground signal fron the Motronic unit.
We try our motronic unit in my freinds 89 and it runs perfect. We would appreciate
any help. thanks ghead
fisch325is is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 08-28-2004, 01:29 PM   #2 (permalink)
5th Gear Member
 
BMWJNKY's Avatar
 
Join Date: Oct 2003
Location: Elk Grove, CA
Car: '89 E30 w/M50
Posts: 1,175
Photos:
BMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond reputeBMWJNKY has a reputation beyond repute
Send a message via AIM to BMWJNKY Send a message via Yahoo to BMWJNKY
Well since you got the car to run perfect with the other Motornic it sounds like the Motronic in your car has gone bad. Unless you have excelent sodiering skills and feel confident sodering on a printed circuit board I would sugest getting a new/rebuilt Motronic. Also when buying a replacement Motronic make sure all the serial and part numbers match otherwise you may run into mysterious eletrical problems that seem to come and go. BMW used 3 or 4 different Motronics in the E30's so it is imparative that you get the correct one.
__________________
My M50 Powered E30 Page

BMWJNKY is offline   Reply With Quote
Old 08-28-2004, 01:37 PM   #3 (permalink)
n00b
 
Join Date: Aug 2004
Car:
Posts: 4
Photos:
fisch325is is an unknown quantity at this point
I must clarify this. I put my motronic unit in my friends car. Our unit works fine in his car. That elimiates a motronic unit problem. Has to be something else. Please keep thinking. thanks
fisch325is is offline   Reply With Quote
Old 08-28-2004, 01:45 PM   #4 (permalink)
5th Gear Member
 
Aether's Avatar
 
Join Date: Mar 2004
Location: Fairmont
Car: 1996 328i
Posts: 1,184
Photos:
Aether is an unknown quantity at this point
Send a message via AIM to Aether Send a message via MSN to Aether
Well given the nature of AJ's post, is it possible that your Motronic unit isn't the proper model for your engine? Maybe your friend's car has the matching serial numbers, and you don't.
__________________

Four Five Six - It's on.
Aether is offline   Reply With Quote
Old 08-28-2004, 09:33 PM   #5 (permalink)
OMFG another one!?
 
witeshark's Avatar
 
Join Date: Aug 2004
Location: Miami FL
Car: 89 E30 325i, 2007 Honda
Posts: 14,690
Photos:
witeshark is just really nicewiteshark is just really nicewiteshark is just really nicewiteshark is just really nicewiteshark is just really nice
Have you checked the spark plugs in the miss firing cylinders?
__________________
BMW

Sig by zeaq
witeshark is offline   Reply With Quote
Old 08-29-2004, 10:34 AM   #6 (permalink)
n00b
 
Join Date: Aug 2004
Car:
Posts: 4
Photos:
fisch325is is an unknown quantity at this point
The # 2-4-6 plugs have a gray color, not white or tan. Plugs 1-3-5 are totally carbon fouled black. The car will run. The idle is extremely rough with the fuel milage gauge bouncing to either extreme. It feels like its running on 3 cylinders. What should I check next?
fisch325is is offline   Reply With Quote
Old 08-29-2004, 12:19 PM   #7 (permalink)
OMFG another one!?
 
witeshark's Avatar
 
Join Date: Aug 2004
Location: Miami FL
Car: 89 E30 325i, 2007 Honda
Posts: 14,690
Photos:
witeshark is just really nicewiteshark is just really nicewiteshark is just really nicewiteshark is just really nicewiteshark is just really nice
If new spark plugs don't help, the distributor and ignition system might need a look
__________________
BMW

Sig by zeaq
witeshark is offline   Reply With Quote
Old 08-31-2004, 05:37 PM   #8 (permalink)
n00b
 
Join Date: Aug 2004
Car:
Posts: 4
Photos:
fisch325is is an unknown quantity at this point
Mystery solved. One of the wire connectos that goes to the fuel injectors was really coroded. I cut out the connector, soidered the wires together and used heat shrink tubing. I found a guy with the same problem on unofficialbmw.com. Thanks
fisch325is is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

  BMW Forum - BimmerWerkz.com > BMW Model Specific Forums > 3-Series (E21, E30)


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

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 Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Any BMW's on Air Ride?? Zq-8_dawg 3-Series (E36) 18 04-05-2007 05:35 PM
Bmw's And Racing Deloriant Driving Tales 25 04-03-2005 05:29 PM
Whats So Good About Bmw's, I Need A Good Arguement BMW-ATI 3-Series (E36) 41 12-06-2004 08:50 PM
are any bmw's rear wheel drive or all wheel drive? the4ork M-Series (M1, M3, M5, M6) 14 06-29-2004 03:20 AM

Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 04:57 PM.



Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.3.2
Garage Plus vBulletin Plugins by Drive Thru Online, Inc.