Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)

E36 (1991 - 1999)
The E36 chassis 3-Series BMW was a huge hit among driving enthusiasts from the first moment the car hit the pavement. The E36 won numerous awards over the years it was produced and is still a favorite of many BMW enthusiasts to this day! -- View the E36 Wiki

Reply
 
Thread Tools Display Modes
  #1  
Old 01-19-2016, 03:33 AM
AmROSS AmROSS is offline
Registered User
Location: Iowa
 
Join Date: Nov 2015
Posts: 9
Mein Auto: 325ci
E36 m5025t missfire

Ok so I'm new to this forum and I was wondering if anyone can help me out. I've done tons of Google searching and can't find any one specific answer. I have a 1995 325i vert with 158k and no rust. Bought the car for $1000 with a blown up trans replaced the trans for a total of 1100 spent. Lately the car started having a really bad missfire at idle and anywhere below 2800 rpm. It will die at idle sitting in traffic. I have replaced spark plugs with NGK's as well as got new coil pack boots. I had the car scanned and it said cylinder 2 3 and 6 are misfiring however I have switched around the coil packs so I'm assuming it's one of them but when I check them with a multimeter they are all well within tolerance. The cam positioning sensor and the crank positioning sensor are good as well and I've eliminated the possibility of a bent valve because it doesn't do it all the time. Any suggestions on how to find the problem?

Last edited by AmROSS; 01-19-2016 at 03:34 AM. Reason: Added more info
Reply With Quote
Advertisement
  #2  
Old 01-19-2016, 07:13 AM
Daggerty Daggerty is offline
Officially Welcomed to the 'Fest
Location: Wisconsin
 
Join Date: Jun 2015
Posts: 269
Mein Auto: 1995 BMW 325is
I'd check fuel pressure throughout the rpms, did you only have the misfire codes?

Also you can swap the coils of the misfiring cylinders to the none misfiring ones and see if the misfires switch over.
Reply With Quote
  #3  
Old 01-19-2016, 10:03 AM
AmROSS AmROSS is offline
Registered User
Location: Iowa
 
Join Date: Nov 2015
Posts: 9
Mein Auto: 325ci
How do I check the fuel pressure. I have a knowledge about cars but there are still things I have yet to do with them. It also gave me a past code for an 02 sensor but that's because I had the car running open headers for a couple days while I was making the exhaust. It also gave me a code for a knock sensor circuit failure.
Reply With Quote
  #4  
Old 01-19-2016, 11:08 AM
Daggerty Daggerty is offline
Officially Welcomed to the 'Fest
Location: Wisconsin
 
Join Date: Jun 2015
Posts: 269
Mein Auto: 1995 BMW 325is
You need a fuel pressure gauge I'm not sure if auto part stores rent them, otherwise harbor freight sells them pretty cheap. You have the same engine as me and you can hook it up on the front of the fuel rail fairly simple. Wear safety glasses because if you don't have the hoses clamped tight enough fuel is going to spray out... A lot
Reply With Quote
  #5  
Old 01-19-2016, 12:12 PM
AmROSS AmROSS is offline
Registered User
Location: Iowa
 
Join Date: Nov 2015
Posts: 9
Mein Auto: 325ci
Haha sounds good! How much psi should there be?
Reply With Quote
  #6  
Old 01-19-2016, 12:32 PM
Daggerty Daggerty is offline
Officially Welcomed to the 'Fest
Location: Wisconsin
 
Join Date: Jun 2015
Posts: 269
Mein Auto: 1995 BMW 325is
44 psi at idle and 51 psi when revving and then see if it holds pressure after you shut off the engine.
Reply With Quote
  #7  
Old 01-19-2016, 12:37 PM
AmROSS AmROSS is offline
Registered User
Location: Iowa
 
Join Date: Nov 2015
Posts: 9
Mein Auto: 325ci
I will check sometime this week. Work has been brutal with all the overtime lol
Reply With Quote
  #8  
Old 01-25-2016, 01:45 PM
AmROSS AmROSS is offline
Registered User
Location: Iowa
 
Join Date: Nov 2015
Posts: 9
Mein Auto: 325ci
I checked my fuel pressure and everything is good there. Now there is a new problem though which leads m back to a faulty coil pack. When I'm driving the rpms will drop then surge up to 5k then return to normal. I've noticed that it does it most when I'm on the highway and it will do it quite frequently. It hasn't been too bad the past couple days but 3 times now I'll get home, shut the car off and when I come back to start it I get nothing. No lights, the dash doesn't light up but the hazards will turn them selves on. I unplugged all the coil packs and plugged them back in and the car started up fine. This was the first time. Today I had to do the same thing but nothing changed, still wouldn't start. I checked the battery and it was at 12.6 volts. I had my friend jump start me to see if that would help and the car started up just fine.
Reply With Quote
  #9  
Old 01-25-2016, 01:51 PM
AmROSS AmROSS is offline
Registered User
Location: Iowa
 
Join Date: Nov 2015
Posts: 9
Mein Auto: 325ci
Is there a way to test for high voltage leakage while the motor is under load? I looked into it and have found that coil packs can ohm just fine when not under load however when they are put under load is when they will usually fail, causing missfires and things of that nature. Also am I able to clean my idle air control valve without taking the intake manifold off to get to it? I was thinking maybe spraying a can of seafoam into the intake.
Reply With Quote
Reply

See More Related BMW Stories

Tags
autocross, drift, e36 325ic, road course, stanced.


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E36 (1991 - 1999)
Today's Posts Search
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 On



Forum Jump


All times are GMT -7. The time now is 10:23 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
© 2001-2015 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms