318ti.org forum

Go Back   318ti.org forum > Technical, Maintenance and Modifications > Maintenance

Notices

Maintenance Service Interval questions, oil change info.

.
» Recent Threads
1999 M-Sport For Sale
12-31-2023 05:10 PM
Last post by Coop540iT
03-23-2024 06:39 PM
1 Replies, 97,908 Views
Once again 318ti owner...
03-20-2024 12:39 PM
Last post by two30grain
03-22-2024 02:04 PM
1 Replies, 60,771 Views
What brakes do I...
03-20-2024 03:27 PM
Last post by huirtera
03-20-2024 03:27 PM
0 Replies, 58,116 Views
Reply Share/Bookmark
 
Thread Tools Display Modes
Old 10-26-2004, 01:06 PM   #1
chaison
Junior Member
 
Join Date: Oct 2004
Location: Sydney, Australia
Posts: 8
iTrader: (0)
Default Bad Rough Idle Please Help!!

HI, i have a 96 ti, done about 100,000 km. It has a rough idle straight away when i start the engine in the morning, and you can hear the rear muffler going like boof boof boof, and etc. I took it to BMW and they told me that it was the cam shaft sensor. They replaced it but nothing change, still the rough idle. It seems like a misfire from the engine with the muffler going boof boof. Can anyone please help me find the solution for my problem.

And also the BMW guys told me that the rough idle comes standard with the M44 96 ti. I thought that was a load of S%#*t. Please help
chaison is offline   Reply With Quote
Old 10-26-2004, 02:11 PM   #2
2ndBimmer
Senior Member
 
2ndBimmer's Avatar
 
Join Date: Jun 2003
Location: Maryland, USA
Posts: 678
iTrader: (2)
Default

My car, even with brand new wires and plugs, has a slightly rough idle (~600rpm).
So it seems like a bit of coarseness is normal, though nothing excessive.
__________________
BostonGreen 97' w/ DASC & Technique Stage 1 software
M3 front bumper. BavAuto Springs. Bilstein Sport Shocks. Xbrace. BA Short Shifter.
Angel Eyes Headlights, doubled brake lights
225/50/16's Yokohama Advan S4's
Panasonic 70Wx4 CD/MP3 player + 4x Alpine 6x9's rear
2ndBimmer is offline   Reply With Quote
Old 10-26-2004, 02:52 PM   #3
NEKO
Member
 
Join Date: Oct 2004
Location: PA
Posts: 78
iTrader: (0)
Default

I changed my cam position sensor on my 97 when my car was running rough. Once the new CPS was replaced the car ran fine. I hope you can figure out what the problem is.
NEKO is offline   Reply With Quote
Old 10-26-2004, 03:41 PM   #4
ZeroG
I miss my Ti....... :(
 
ZeroG's Avatar
 
Join Date: Nov 2003
Location: Los Angeles, CA
Posts: 828
iTrader: (1)
Default Idle issue ..

Quote:
Originally Posted by NEKO
I changed my cam position sensor on my 97 when my car was running rough. Once the new CPS was replaced the car ran fine. I hope you can figure out what the problem is.
There are a few things that can affect idle beside that CPS. When was the last time you changed your O2 Sensor? Have you tried to trouble-shoot your ICV (Idle Control Valve)? If you model has one have you checked the status of the throttle body heater? How about your crank shaft sensor?

What exactly do you mean by a rough idle? I have a friend that thinks his idle sucks and it just fluctuates between 650 - 800 RPMS. Is the idle hunting like there is a vacume leak? Have you tried fuel injector cleaner, also try changing where you are getting your gas from maybe it's a bad tank. Have you tried running a higher octane fuel?

-Chad
__________________
http://www.kodakgallery.com/PhotoVie...d=216155210106
"The faster you go, the sooner you get there"
ZeroG is offline   Reply With Quote
Old 10-26-2004, 11:41 PM   #5
2002tii
Junior Member
 
Join Date: Oct 2004
Location: Los Angeles
Posts: 4
iTrader: (0)
Default

Hey

A simple fix and is also worth looking into is checking your fuel filter. They are under $20 at any import part place. The filter is located underneath the driver seat under the car. it is coverd by a plate that you can remove with an 8 mm socket then a clamp that is held by a 10 mm socket. followed by 2 hose clamps and away you go. this may or may not help but it is good piece of mind for the future and it is a cheap fix. it helped on my 97 I tried wires and plugs and it still was rough. The filter fixed it
2002tii is offline   Reply With Quote
Old 10-27-2004, 03:04 AM   #6
Jeff Spooner
Senior Member
 
Join Date: Jul 2004
Location: Columbia S.C.
Posts: 127
iTrader: (0)
Default

the 4cyl BMW's are bad about the plug wires going bad. they may ohm good but will still skip. The best way to check is when the engine is cold crank it up and measure the temp on each exhaust pipe at the head. if you dont have a temp gun spray them w/ a pump spray bottle. the skipping cyl will not burn the water off. Then replace just that wire with a known good wire. IT helps to have a few donor cars around the shop. Or switch wires between cylinders and see if it changes cylinders. if no change try swapping coils or plugs between cylinders to isolate which part is bad.
Jeff Spooner is offline   Reply With Quote
Reply

Bookmarks


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

Forum Jump


All times are GMT +1. The time now is 03:31 PM.


.
Powered by site supporters
vBulletin Version 3.8.8
Copyright ©2000 - 2024, Jelsoft Enterprises Ltd.
Copyright ©1999 - 2024, 318ti.org
© vBadvanced CMPS v3.2.2
[page compression: 71.05 k/84.13 k (15.54%)]

318ti.org does not warrant or assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any information or products discussed.