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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 01-04-2008, 07:22 AM
clee11 clee11 is offline
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Mein Auto: E46 323i
Unhappy Misfire, rough idle, bunch of error codes

99 E46 323i Auto 121K miles

Hi, My car started to showing rough idle and multiple misfires (knocking) since yesterday.
It seems like there is no prob with acceleration so far. I added a fuel system cleaner (valvoline) and got scanned on the way work this morning and it seems slightly better

I did some research so I'm gonna get ICV, MAF, and throttle body cleaned today.
Hope this solve the problem but do you guys have any other thoughts?

Here is the error codes:

P0300 Cylinder misfire detected - Random cylinders
P0301 Cylinder misfire detected - Cylinder number 1
P0302 Cylinder misfire detected - Cylinder number 2
P0303 Cylinder misfire detected - Cylinder number 3
P0305 Cylinder misfire detected - Cylinder number 5
P0306 Cylinder misfire detected - Cylinder number 6
P1510 Idle Speed Control Valve Stuck
P1580 Throttle Valve Mechanically Stuck
P1188 Fuel control (Bank 1 Sensor 1)
P1189 Fuel control (Bank 2 Sensor 1)
P1397 Camshaft Position Sensor "B" Circuit (Bank 1)

*Thermostat was replaced 9 month ago
*Air filter was replaced a month ago

Thanks in advance
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  #2  
Old 01-04-2008, 07:29 AM
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Vornado Vornado is offline
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Mein Auto: Hot air balloon
When was the last time you had your coils/spark plugs replaced?
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  #3  
Old 01-04-2008, 08:55 AM
wesrubix wesrubix is offline
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Mein Auto: 328i CC
Similar error codes came up on my '00 323i wagon. One of the coolant hoses was cracked or loose and the car was leaking coolant way too fast. Girlfriend was driving it home, it stalled, she got it to start again and got it into our driveway, but the cylinders were probably warped.

Misfires are indicative of a coil or spark plug thing. So def check them out. I had to say goodbye to my wagon (wasn't worth 11k$ replacing the engine) but I the dealership gave me a good trade in for it (same 11k$!)
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  #4  
Old 01-26-2008, 03:13 PM
Scany1980 Scany1980 is offline
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Mein Auto: 2000 528i Sport
What happened? Did you ever find out how to fix it? I got some of the same codes too: misfire cyl #5 and stuck throttle valve
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  #5  
Old 02-29-2008, 10:58 PM
davidfalling davidfalling is offline
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Mein Auto: 1999 328i
I have experienced a similar issue with my '99 328i. The fault code is always a misfire on cylinder 5.

Things we have tried:
-Replace all spark plugs
-New coil pack for cylinder 5, even switched coil packs around, but still misfire on only 5.
-New camshaft position sensor
-Compression check on all cylinders (was like new)
-We have of course checked all wires and hoses and no apparent problems

Took it to a BMW Specialist... he thinks it is an issue with the DME. I am not sure if i want to drop the additional money into it without being sure it will fix the problem.

This car has 210,000 miles on it, though the top end was rebuilt at 150k according to the seller.

The check engine light is not always on, and it only misfires on occasion. Sometimes it will misfire and then correct itself. Other times I have to shut the car off and re-start it to make it run right again. It also idles very rough when it starts up cold. Upon start-up it sits at about 1k, but then about every 10 seconds the RPMs will drop until it almost dies, then it will go back up to 1k.

Does anyone know of a fix?! I love this car, but its killing me to see the check engine light on.

Thanks in advance!

-David
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  #6  
Old 03-01-2008, 06:23 AM
ball.jason ball.jason is offline
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Mein Auto: 2000 323CI
I hear ya man my 323ci is doing the same thing but I only have 74k on it. Let me know if you figure anything out.
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  #7  
Old 03-01-2008, 12:25 PM
tiffany_w99 tiffany_w99 is offline
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Mein Auto: 01 325i
This happened to me last week. I took it to 3 places and nobody could tell me what it was. Someone thought it was the catalytic conveerte, but it wasnt. Finally I paid the $90 and took it to BMW. Its the crankcase and vent valve. Costs a total of $730 including labor to fix. The parts (including hoses) come to $300.
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  #8  
Old 03-01-2008, 05:32 PM
Scany1980 Scany1980 is offline
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Mike Miller himself suggested that my problem might be due to a bad battery. For $150 thats worth checking out. And I will after easter.
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  #9  
Old 03-02-2008, 07:02 AM
ball.jason ball.jason is offline
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Ive had two people suggest that it could be a bad battery. Im gonna try that today. Ah gotta love prosses of elemination. If this doesnt work I Know a good shop close by I can have it checked out im sure we arent the only ones having this problem.

Last edited by ball.jason; 03-02-2008 at 07:05 AM.
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  #10  
Old 03-02-2008, 09:48 AM
brabus brabus is offline
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Mein Auto: 2001 BMW 330ci
Quote:
I did some research so I'm gonna get ICV, MAF, and throttle body cleaned today.
Hope this solve the problem but do you guys have any other thoughts?

Here is the error codes:

P0300 Cylinder misfire detected - Random cylinders
P0301 Cylinder misfire detected - Cylinder number 1
P0302 Cylinder misfire detected - Cylinder number 2
P0303 Cylinder misfire detected - Cylinder number 3
P0305 Cylinder misfire detected - Cylinder number 5
P0306 Cylinder misfire detected - Cylinder number 6
P1510 Idle Speed Control Valve Stuck
P1580 Throttle Valve Mechanically Stuck
P1188 Fuel control (Bank 1 Sensor 1)
P1189 Fuel control (Bank 2 Sensor 1)
P1397 Camshaft Position Sensor "B" Circuit (Bank 1)
At 121K, I bet your spark plugs need replacing. Also, the camshaft PS is a common failure and not hard to replace. Try cleaning your fuel injectors using BG 44K...I think it's the best stuff out there. Other's swear by Seafoam...but either way they'll both be better than standard Valvoline fuel system cleaner. All these things probably need to be done anyways just for proper maintenance, so start there and see what happens.
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  #11  
Old 03-02-2008, 05:04 PM
davidfalling davidfalling is offline
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Location: San Francisco, CA
 
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Posts: 6
Mein Auto: 1999 328i
Quote:
Originally Posted by Scany1980 View Post
Mike Miller himself suggested that my problem might be due to a bad battery. For $150 thats worth checking out. And I will after easter.
The past week has been one of those weeks where the problem isn't so dominant and the check engine light isn't on reminding me of this problem. I just replaced my battery this week with a $180 BMW battery direct from the dealer and the check engine light magically appeared again. So, for me anyway, that didn't help. Same ol stuff.


Hey tiffany_w99, you mentioned you got the crank case and vent valve fixed. Were you experiencing the same symptoms and fault codes? Did this fix work? I would be willing to pay the money to get it fixed, instead of throwing money at it blindly and getting nickel and dime'd to death.

Thanks!

-David
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  #12  
Old 03-04-2008, 12:37 AM
ctrspeed ctrspeed is offline
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Mein Auto: 1999 BMW 328I
i'm experiencing the same cylindery #6 misfire on my 99 328i. I have taken it two to different shops. the first shop thinks is a computer problem and it needs an update or computer relearn program. the second shop believes that ther might be a nicked or bent valve in cylinder #6. I have replace cam sensors, vent valves , inspected vanos timing, coils, plugs, injectors and still cylinder #6 misfire. When hooked to the computer and the misfire happens.. hit delete fault code... and car runs smooth...drive it for a while comes back on again... reset it runs smooth... i'm fustrated and help would be appreciated.. thank you...
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  #13  
Old 03-04-2008, 06:29 AM
jzouzout jzouzout is offline
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Location: montreal, canada
 
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Mein Auto: 2001 bmw 325xi
Smile Check engine light

hello i have a 2001 bmw 325xi, and my check engine lights comes on and off. It comes on for two days than it goes away for a week and than it comes back, does anyone know what can be the problem?
thanks
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  #14  
Old 03-04-2008, 07:08 AM
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momo_oo[][]oo momo_oo[][]oo is offline
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have you guys checked your CATs and O2 sensors??
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  #15  
Old 03-04-2008, 07:48 AM
davidfalling davidfalling is offline
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Location: San Francisco, CA
 
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Mein Auto: 1999 328i
Quote:
Originally Posted by ctrspeed View Post
i'm experiencing the same cylindery #6 misfire on my 99 328i. I have taken it two to different shops. the first shop thinks is a computer problem and it needs an update or computer relearn program. the second shop believes that ther might be a nicked or bent valve in cylinder #6. I have replace cam sensors, vent valves , inspected vanos timing, coils, plugs, injectors and still cylinder #6 misfire. When hooked to the computer and the misfire happens.. hit delete fault code... and car runs smooth...drive it for a while comes back on again... reset it runs smooth... i'm fustrated and help would be appreciated.. thank you...
That is basically the same thing thats happening to my car, same year, same model. The shop told me it is a problem with the DME but I was hesitant to drop $500 into getting a new one, for fear that I would be spending more money on yet another thing that doesn't fix it. If your shop thinks its a computer (DME) problem also, then that gives me a little bit more confidence in going forward with this.

Now I just have to decide if I'm gonna buy one direct from BMW at an outrageous price, or if I can find a place that will repair my current DME. My mechanic already tried getting a used one and programing it to my car but it wouldn't program!

Wouldn't it be nice if there was a definitive answer?! haha.
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  #16  
Old 03-04-2008, 06:37 PM
ctrspeed ctrspeed is offline
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Location: Phoenix,AZ
 
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Mein Auto: 1999 BMW 328I
well I took my car to the stealer today I guess i'll wait and see what they say. I'll let you know the outcome...as soon as i hear.
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  #17  
Old 03-05-2008, 09:38 AM
tiffany_w99 tiffany_w99 is offline
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Location: OKC
 
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Mein Auto: 01 325i
No, I got a 2nd opinion and this mechanic (for 20 years) said that it is not the cranckase and vent valve hoses. That its being caused by Secondary ignition and I need new spark plugs and wires.

So I guess I need to price that out and see about replacing those. Maybe that will help.
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  #18  
Old 03-11-2008, 01:29 PM
Bluesummers Bluesummers is offline
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Location: New York
 
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Mein Auto: E36 1996 328i
My 1996 328i (127,000 miles) started doing this a few days ago. Two of the cylinders misfiring and the rough "knocking" (while driving and idling).

I just got the battery replaced yesterday, but the Check Engine light is back on again.

Here's hoping it's just a spark plug problem.

Edit: I suppose I'm in the wrong section though. Oops.
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  #19  
Old 04-08-2008, 01:37 PM
ctrspeed ctrspeed is offline
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Location: Phoenix,AZ
 
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Mein Auto: 1999 BMW 328I
I took it to the dealership, and they couldn't figure it out... They also belive that is an internal engine problem. Bad Valve or Lifter Valves... They wanted to charge me 5K just to take it apart and look...BS>.. Took it back to the original shop that put the engine back together and told them that two shops say its a bad valve and that that is more than 1 shop saying "computer problem"..... well they took the darn engine apart with the condition that if it wasnt an internal problem that i would pay for their labor again 3,500 dollars. Shi@$09*4.... they didn't find any internal problems... motherfu@$(@#*$ I'm tired of this cylinder #6 Misfire... what the F#@$($* ..... I'm Going take this fu$$(# car to the junk yard and consider my 15k I have put in this fu@%#$## car lost!!!!!!!! has anyone figured out what the fuc@#$%R#$# is wrong with their misfire code that won't fu##$#$# go away.........!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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  #20  
Old 04-08-2008, 02:22 PM
Scany1980 Scany1980 is offline
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Mein Auto: 2000 528i Sport
Sorry to hear your situation ctrspeed. I'd be pissed also.

Anyone got problems with the DSC also? Mine's been bad long time. It went on and off for a week and now it's off all the time. Since the DSC can override throttle I thought it might be a connection.

Also I got very rough idle at startup, with big drops in idle every 20 seconds or so. This is when I get my misfire code on cyl 5. Haven't happened in a long time now.

As soon as I got the engine into my Tahoe I will get to this silly problem with the BMW.
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  #21  
Old 04-08-2008, 03:15 PM
davidfalling davidfalling is offline
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Mein Auto: 1999 328i
Quote:
Originally Posted by Scany1980 View Post
Also I got very rough idle at startup, with big drops in idle every 20 seconds or so. This is when I get my misfire code on cyl 5. Haven't happened in a long time now.
I have the rough idle sometimes at start-up as well. I am not sure if this is related to the cylinder 5 misfire though. I get the rough idle all the time, but yet the check engine light doesn't come on.

This is what happens for me: If I start up my car and I immediately put it into gear and move it I am fine and the Check Engine light does not come on. In my case I am usually in the garage in the mornings so I get in and start her up, then immediately put it into Reverse and back out. As long as I don't let it sit right after starting it up the Check Engine light will not come on 95% of the time.

If, however, I start her up and let her run for a couple minutes (while putting in a CD or something) before backing out, almost every time it will start to misfire on cylinder 5 and the check engine light will come on. VERY WEIRD!

I have taken it to several mechanics and most of them think that it is a problem with the DME. We have done everything short of tearing apart the engine or replacing the DME. I don't want to do either of those because I'm not going to waste the money if it is not a FOR SURE fix. I can't afford to throw that kind of money into a car that isn't really worth that much anyway. If my little temporary fix works for now I'll just stick to that until someone comes up with a full proof fix, OR I can afford to get the new e92 M3.
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  #22  
Old 04-08-2008, 05:19 PM
Scany1980 Scany1980 is offline
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Location: Washington, DC
 
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Mein Auto: 2000 528i Sport
A while back I also got a fault code concerning secondary air. Don't think this have anything to do with it though. But I have a feeling the rough idle does.

davidfalling: it's pretty much just like that with mine too. Have you changed your idle control valve (ICV) and/or cam position sensor? Done anything with the VANOS unit?

I think this will be my repairs: battery, ICV, vacum hoses, cam position sensor, DSC part or unit.
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  #23  
Old 04-08-2008, 06:05 PM
davidfalling davidfalling is offline
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Quote:
Originally Posted by Scany1980 View Post
davidfalling: it's pretty much just like that with mine too. Have you changed your idle control valve (ICV) and/or cam position sensor? Done anything with the VANOS unit?

I think this will be my repairs: battery, ICV, vacum hoses, cam position sensor, DSC part or unit.
I have replaced my battery with a brand new BMW (overpriced) factory battery and since then my check engine "work-around" that I described has been working about 95% of the time.

I have also replaced the Cam Position Sensor which did absolutely nothing.

The vacuum hoses were checked for leaks, but never replaced since no leaks were found. (though is it really possible to track down leaks 100%?) Maybe replacing hoses would be a good idea for the rough idle. The ICV and DSC haven't been looked at or considered. Do you have any reason to believe they could be the culprit?

The BMW specialist I took my car to said the VANOS probably has nothing to do with it. I am still a little confused as to what exactly that even is. haha.

Wouldn't it just be awesome if all of our collective experiences could actually figure this out! haha
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  #24  
Old 05-19-2008, 01:54 PM
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silverbimmer3 silverbimmer3 is offline
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Mein Auto: '05 M3 ZCP; '06 530 XIT
I think user 'Rajaie' may know about the issues you have.
here is a question I asked him:
http://www.bimmerfest.com/forums/sho...d.php?t=274703

it sounds like vanos issue, but not sure...



Quote:
Originally Posted by davidfalling View Post
I have experienced a similar issue with my '99 328i. The fault code is always a misfire on cylinder 5.

Things we have tried:
-Replace all spark plugs
-New coil pack for cylinder 5, even switched coil packs around, but still misfire on only 5.
-New camshaft position sensor
-Compression check on all cylinders (was like new)
-We have of course checked all wires and hoses and no apparent problems

Took it to a BMW Specialist... he thinks it is an issue with the DME. I am not sure if i want to drop the additional money into it without being sure it will fix the problem.

This car has 210,000 miles on it, though the top end was rebuilt at 150k according to the seller.

The check engine light is not always on, and it only misfires on occasion. Sometimes it will misfire and then correct itself. Other times I have to shut the car off and re-start it to make it run right again. It also idles very rough when it starts up cold. Upon start-up it sits at about 1k, but then about every 10 seconds the RPMs will drop until it almost dies, then it will go back up to 1k.

Does anyone know of a fix?! I love this car, but its killing me to see the check engine light on.

Thanks in advance!

-David
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  #25  
Old 05-19-2008, 06:59 PM
wolf6292 wolf6292 is offline
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Location: VA
 
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Mein Auto: 2001 330 XI
the Vanos valve controls valve timing it can advance or retard the timing of the intake or exhaust valve it is like VVTI in Toyota and VTEC in Honda just slightly different.
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