2008 e92 335i problem

Strongmad · 10-05-2016, 01:16 PM

I have a 2008 e92 335i with 91k miles, today on the interstate in fourth gear at about 4k RPM (was passing a slow truck) the engine starts sputtering, the check engine light comes on, I let off the throttle then ease back on the throttle and there is more sputtering. This happens a few times and the sputtering gets worse, then magically the check engine light turns off and all is well with the world.

Anyone have any ideas what might cause this? Ill get the codes when I get home and scan the car.

jaymesbry · 10-05-2016, 01:53 PM

dunno cant really tell till you pull some codes. But my guess would be coils

RJ_ · 10-05-2016, 02:13 PM

Codes will help. I would say coils or injectors.

I had a misfire under boost on my old injectors that wouldn't throw a code but could be felt. Using the JB4 I could see the car erratically go lean on bank one when the misfires would happen. Replaced the injectors and it runs much better.

mike@x-ph.com · 10-05-2016, 03:31 PM

Quote:

Originally Posted by Strongmad

I have a 2008 e92 335i with 91k miles, today on the interstate in fourth gear at about 4k RPM (was passing a slow truck) the engine starts sputtering, the check engine light comes on, I let off the throttle then ease back on the throttle and there is more sputtering. This happens a few times and the sputtering gets worse, then magically the check engine light turns off and all is well with the world.

Anyone have any ideas what might cause this? Ill get the codes when I get home and scan the car.

It could be a million things, most likely spark plugs or coils.

As mentioned above check the codes

Strongmad · 10-05-2016, 06:04 PM

Misfire on cylinder 5, happened 1 time. I'm going to clear the code and if it happens again I'll throw a coil pack on and see if that helps.

feuer · 10-05-2016, 09:04 PM

4th gear at 4k RPM ? What is that? About 100mph ? Must be a very fast slow truck ! Anyhow, cyl#5 is the loudest and hottest. Probably is the injector.

Strongmad · 10-06-2016, 10:50 AM

Quote:

Originally Posted by feuer

4th gear at 4k RPM ? What is that? About 100mph ? Must be a very fast slow truck ! Anyhow, cyl#5 is the loudest and hottest. Probably is the injector.

The truck was slow, I may or may not have just kept going...

feuer · 10-06-2016, 11:52 AM

Quote:

Originally Posted by Strongmad

The truck was slow, I may or may not have just kept going...

Move coil from cyl#5 to cyl#1 and spark plug from cyl#5 to cyl#3
Run it, run it hard, passing slow trucks...

If you have misfire on cyl#5 again is the injector (what I think)
If you have misfire on cyl#1 is the coil
If you have misfile on cyl#3 is the spark plug.

Easy enough to figure out...

Strongmad · 10-06-2016, 08:53 PM

Quote:

Originally Posted by feuer

Move coil from cyl#5 to cyl#1 and spark plug from cyl#5 to cyl#3
Run it, run it hard, passing slow trucks...

If you have misfire on cyl#5 again is the injector (what I think)
If you have misfire on cyl#1 is the coil
If you have misfile on cyl#3 is the spark plug.

Easy enough to figure out...

Thank you, Ill give it a whirl this weekend!

unrulyteach · 10-06-2016, 10:42 PM

Quote:

Originally Posted by feuer

Quote:

Originally Posted by Strongmad

The truck was slow, I may or may not have just kept going...

Move coil from cyl#5 to cyl#1 and spark plug from cyl#5 to cyl#3
Run it, run it hard, passing slow trucks...

If you have misfire on cyl#5 again is the injector (what I think)
If you have misfire on cyl#1 is the coil
If you have misfile on cyl#3 is the spark plug.

Easy enough to figure out...

Alothough u hav to go through a process but it's easy enough

Strongmad · 10-10-2016, 02:15 PM

It was the spark plug, which seams reasonable, i haven't changed them in 50k miles. I know what Im doing this weekend.

unrulyteach · 10-10-2016, 03:09 PM

Quote:

Originally Posted by Strongmad

It was the spark plug, which seams reasonable, i haven't changed them in 50k miles. I know what Im doing this weekend.

Well that's good

mike@x-ph.com · 10-10-2016, 04:18 PM

Quote:

Originally Posted by Strongmad

It was the spark plug, which seams reasonable, i haven't changed them in 50k miles. I know what Im doing this weekend.

Let us know how it goes

unrulyteach · 10-13-2016, 08:05 PM

So my friend just changed his spark plugs but it's still say it's misfire on cylinder 3 in 2 firing order. Switch the coils around still get the same thing what are we missing here

Strongmad · 03-28-2017, 12:03 PM

I finally replaced my spark plugs. That was definitely the issue.

MysticRob · 03-28-2017, 04:56 PM

Quote:

Originally Posted by Strongmad

I finally replaced my spark plugs. That was definitely the issue.

Nice. I take it you're not modded and tuned? Don't see how you could go that long and NOT have severe issues otherwise.

Strongmad · 03-29-2017, 10:02 AM

Quote:

Originally Posted by MysticRob

Nice. I take it you're not modded and tuned? Don't see how you could go that long and NOT have severe issues otherwise.

JB4 and water+meth. It is the second spark plug change on this car. I should probably do it more often.

10-05-2016, 01:16 PM	#1
Strongmad Private First Class 13 Rep 139 Posts Drives: 335 Join Date: Apr 2008 Location: nonja iTrader: (0)	2008 e92 335i problem I have a 2008 e92 335i with 91k miles, today on the interstate in fourth gear at about 4k RPM (was passing a slow truck) the engine starts sputtering, the check engine light comes on, I let off the throttle then ease back on the throttle and there is more sputtering. This happens a few times and the sputtering gets worse, then magically the check engine light turns off and all is well with the world. Anyone have any ideas what might cause this? Ill get the codes when I get home and scan the car.
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10-05-2016, 01:53 PM	#2
jaymesbry Private First Class 27 Rep 128 Posts Drives: 2008 335i Join Date: Feb 2014 Location: San diego iTrader: (0)	dunno cant really tell till you pull some codes. But my guess would be coils
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10-05-2016, 09:04 PM	#6
feuer Major General 4276 Rep 9,206 Posts Drives: wife crazy! Join Date: Apr 2015 Location: Chicago, IL iTrader: (5)	4th gear at 4k RPM ? What is that? About 100mph ? Must be a very fast slow truck ! Anyhow, cyl#5 is the loudest and hottest. Probably is the injector.
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10-10-2016, 02:15 PM	#11
Strongmad Private First Class 13 Rep 139 Posts Drives: 335 Join Date: Apr 2008 Location: nonja iTrader: (0)	It was the spark plug, which seams reasonable, i haven't changed them in 50k miles. I know what Im doing this weekend.
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10-13-2016, 08:05 PM	#14
unrulyteach Colonel 392 Rep 2,367 Posts Drives: 2011 335i Join Date: May 2016 Location: myrtle beach sc iTrader: (0) Garage List 2011 BMW 335i [0.00]	So my friend just changed his spark plugs but it's still say it's misfire on cylinder 3 in 2 firing order. Switch the coils around still get the same thing what are we missing here
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10-05-2016, 02:13 PM	#3
RJ_ Baby-faced Assassin 1203 Rep 152 Posts Drives: when car isn't broke. Join Date: Sep 2015 Location: Department of the Posterior iTrader: (0)	Codes will help. I would say coils or injectors. I had a misfire under boost on my old injectors that wouldn't throw a code but could be felt. Using the JB4 I could see the car erratically go lean on bank one when the misfires would happen. Replaced the injectors and it runs much better.
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10-05-2016, 06:04 PM	#5
Strongmad Private First Class 13 Rep 139 Posts Drives: 335 Join Date: Apr 2008 Location: nonja iTrader: (0)	Misfire on cylinder 5, happened 1 time. I'm going to clear the code and if it happens again I'll throw a coil pack on and see if that helps.
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03-28-2017, 12:03 PM	#15
Strongmad Private First Class 13 Rep 139 Posts Drives: 335 Join Date: Apr 2008 Location: nonja iTrader: (0)	I finally replaced my spark plugs. That was definitely the issue.
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