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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 05-04-2011, 01:40 PM
snapple112 snapple112 is offline
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Engine bogging then surging at 3K RPM still noticeable after vanos replaced

Finally have my vanos situation under control after my mechanic took care of it and redid the vanos procedure.

Car runs great. Smooth takeoffs, nice idle, 26MPG @75MPH Highway. Power is back, and you can hear the grin she makes in first and second gears again

One issue I noticed today is the bogging still taking place. This was a major issue with the car before I replaced the vanos (more specifically, the biggest issue with the car).

Its not bogging nearly as much as it used to, maybe only dropping 100rpm-300rpms but I can still hear and feel it. I managed to get video tape this with my phone...



The following are the seconds in the video where the bogging took place:

0:18
0:58
1: 02
1:11


I am nearing the final ~200 miles of breaking in the seals. Are their any other reasons the engine would bog at 2-3K?

Note: my check engine light is on b/c of code P1519... simple oil temp sensor that I will get around to replacing.
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  #2  
Old 05-05-2011, 09:03 AM
xraye39 xraye39 is offline
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Are you sure you plugged back in both of the Vanos solenoids, very easy to forget to plug one back in

Did you pull codes again after doing Vanos to see if there is any new codes that would indicate that a Vanos solenoid was unplugged?

Worth looking under the hood!
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  #3  
Old 05-05-2011, 09:57 AM
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bluebee bluebee is offline
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Long shot ... but doesn't the DISA kick in somewhere in the three thousands?

Could that possibly effect the bogging down of the engine?

Last edited by bluebee; 05-09-2011 at 12:35 AM.
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  #4  
Old 05-05-2011, 10:12 AM
pleiades pleiades is offline
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I enjoyed the ending where it looks like you crash and flip over.

Since your car has single-Vanos, I think you only have one Vanos solenoid to worry about (connected or not).

No idea what the problem is but I noticed you are driving that car with your fuel level dangerously low. I think I've seen posts around here about folks having fuel-pump failures at under a quarter-tank, so ...... watch out.
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  #5  
Old 05-05-2011, 01:22 PM
snapple112 snapple112 is offline
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Quote:
Originally Posted by bluebee View Post
Long shot ... but doesn't the DISA kick in somewhere in the three thousands?

Could that possibly effect the boging down of the engine?
Not to sure on that one. But, not trying to prove you wrong or anything, I made another video last night on my way home from work... If you don't mind looking at this one:



Happens once exactly at 0:17 seconds.

Engine bogging at 4K RPM! I couldn't believe it when I watched the video. I've only seen this happen in 3rd gear (which it was) and at 3K. This is the first time at 4K.
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  #6  
Old 05-05-2011, 05:06 PM
edjack edjack is online now
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I don't think the M52 has a DISA.

How old is the fuel filter? If you don't know, that may be the first thing to do: replace it.

You'll need to monitor fuel pressure while you're driving. The six has a Schrader valve in the fuel manifold. You can connect a fuel pressure test gauge and tape it to the hood, OUTSIDE the car! You s/b getting around 50 psi.

That's not a bog, it's a loss of power, probably due to fuel delivery problems.

A bog is felt when an engine is over-carbureted, and the throttle is opened at low RPM. The engine trips over itself and flames out.

You have an engine shutoff.
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  #7  
Old 05-05-2011, 07:04 PM
Dick Steinkamp Dick Steinkamp is offline
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Are you sure it's not just the torque converter locking which is resulting in the drop of a few hundred RPM's? It looks like the speedo continues to climb at the "bog".
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  #8  
Old 05-05-2011, 07:47 PM
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WagonTheDog WagonTheDog is offline
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I noticed you've got an SES light going... Start by getting those codes read...

When in doubt, start with the obvious...
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  #9  
Old 05-05-2011, 08:05 PM
snapple112 snapple112 is offline
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Quote:
Originally Posted by WagonTheDog View Post
I noticed you've got an SES light going... Start by getting those codes read...

When in doubt, start with the obvious...
Yes I stated that in my original post. Code p1519. Should not effect my problem... only effects starting the car (may take longer)

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  #10  
Old 05-05-2011, 11:38 PM
edjack edjack is online now
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P1519 refers to the cam position sensor on your engine. Replace it and your troubles will be over.

You're lucky you haven't been stranded; your CPS is intermittent.

That code points to the CPS on the M62/M52/S52 engines. Check page OBD-84 in your Bentley manual.
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  #11  
Old 05-06-2011, 10:30 AM
snapple112 snapple112 is offline
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I will replace this as soon as I can get the part in. My mechanic that fixed my vanos that I screwed up said that it shouldn't affect the way to car performs (only that it may take a little longer to start) since the check engine light came on about a day after I got it back from him.

I should make him pay for this...

Though, I don't understand how the sensor can control my engine bogging (if thats whats happening)

Last edited by snapple112; 05-06-2011 at 10:31 AM.
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  #12  
Old 05-06-2011, 11:21 AM
edjack edjack is online now
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Mein Auto: '97 540i 6 speed
It's not bogging; it's cutting out. The auto trans creates a different action than a manual.

When mine went, the engine would buck and stall, but I was able to get the car home.

I guess it depends on the failure mode. When the CPS malfunctions, and sends the wrong signal to the DME, the DME gets confused. Having a VANOS complicates the situation - my engine is sans VANOS.
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  #13  
Old 05-08-2011, 09:38 PM
e39 bimmer e39 bimmer is offline
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I am having the same problem in the video any way I can fix this?
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  #14  
Old 05-08-2011, 10:41 PM
bobdmac bobdmac is offline
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Quote:
Originally Posted by e39 bimmer View Post
I am having the same problem in the video any way I can fix this?
A diagnostic code readout would be a good place to start.
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  #15  
Old 05-31-2011, 07:05 AM
ra7120 ra7120 is offline
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Any resolution to this thread? I am having a similar issue but I wouldn't say my engine is bogging.

I have the P1519 code. I replaced the CPS. No improvement or change at all. I was stranded yesterday with the car losing power and stumbling to a stop. It will not start.
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  #16  
Old 11-18-2012, 11:15 PM
CC4R1N1528 CC4R1N1528 is offline
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Mein Auto: 1997 BMW 528i
Bogging after CPS and Vanos Replacement

I have replaced the Crank position sensor, and the vanos unit. I'm still seeing bogging at 3K rpms. WTF!!

Anybody have any resolution?
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  #17  
Old 11-19-2012, 02:28 PM
poolman poolman is online now
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I thought you needed to replace the Cam Position Sensor--not the Crank Sensor--the car wouldn't crank if the Crank sensor went south--
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  #18  
Old 11-20-2012, 12:31 PM
CC4R1N1528 CC4R1N1528 is offline
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Mein Auto: 1997 BMW 528i
Engine bogging then surging at 3k RPM still noticeable after vanos replacement

Ok, so there are 2 sensors. I replaced the Camshaft position sensor and wires. part # 12 14 1 703 221. There is also a crank sensor 12 14 1 703 227. I replaced the cam sensor.
I have this odd vibration at low Rpms.
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