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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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  #76  
Old 12-16-2011, 02:59 PM
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morrisroad morrisroad is offline
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Here's the latest. I received the replacement injector and much to my chagrin, after installing it the injector leaked! So, after replacing the upper o-ring thinking it might be the source of the problem, and various other troubleshooting, I ended up putting the old injector back on. I captured the troubleshooting here on this link http://www.bimmerfest.com/forums/sho...067&highlight=. Instead of spending another week waiting an messing around with a GB remanufactured injector, I ordered a new VDO one. Replaced it, without any issues. Now, I'll have to report back to see if there is any changes when it gets below 0.
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  #77  
Old 12-16-2011, 03:43 PM
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champaign777 champaign777 is offline
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i will be surprised if injectors can resolve cold start up issue
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  #78  
Old 12-16-2011, 07:06 PM
kgorczyn kgorczyn is offline
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Thanks for your updates. I'm closely watching your thread
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  #79  
Old 12-17-2011, 08:44 AM
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morrisroad morrisroad is offline
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Updated Recap of what has been done to solve, but still have miss:
New Plugs
New Intake boots upper and lower
New air filter
New DISA
New emission control air pump and valve

New Bosch Coils
New Fuel filter
New CCV
New valve cover gasket
New Injectors

VANOS - Beisian Procedure to replace rings
Checked for vacuum leaks, including behind intake and caps
Cleaned the MAF, did the unplug test and used MAF Cleaner
Cleaned the ICV
Cleaned the the throttle body
Checked for codes- none

Now some of the above in italics, I did b/c the broke or needed to be changed. There were some very noticeable acceleration improvements when I changed the fuel filter and injectors. DISA also improved this as well. I can't say I noticed much after doing the VANOS other than the RPMS stay a bit higher when started.
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Last edited by morrisroad; 12-17-2011 at 08:48 AM.
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  #80  
Old 12-19-2011, 10:13 PM
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champaign777 champaign777 is offline
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so where you are with a cold start up issue and a new injectors ?
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  #81  
Old 12-20-2011, 11:00 AM
kgorczyn kgorczyn is offline
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See my thread and see if you have the same/similar things as me....

http://www.bimmerfest.com/forums/sho....php?p=6512696
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  #82  
Old 12-20-2011, 11:08 AM
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champaign777 champaign777 is offline
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morrisroad
where you are with a cold start up issue and a new injectors ?

Last edited by champaign777; 12-20-2011 at 11:10 AM.
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  #83  
Old 12-20-2011, 11:10 AM
kgorczyn kgorczyn is offline
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He installed new injectors, but it did not fix the problem.
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  #84  
Old 12-20-2011, 11:11 AM
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champaign777 champaign777 is offline
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i was sure about it
see #77

Last edited by champaign777; 12-20-2011 at 11:13 AM.
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  #85  
Old 12-20-2011, 04:39 PM
poolman poolman is offline
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Does the car run OK after warming up? If so I'm starting to think it might be a temp sensor for the engine computor. The only way that would show up would be through a scan from the dealer--a stat might cause the same problem maybe. Still noodling
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  #86  
Old 12-20-2011, 06:43 PM
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Runs fine when warm.
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  #87  
Old 12-21-2011, 05:45 AM
IQBMW IQBMW is offline
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I have 2002 520i done 79K. Last night the battery went flat and got it replaced with new one. Early morning, the car started with vibrations at low RPM (~700) and after racing at 2000 rpm, i thought things will be smooth but, the engine was put off. I waited couple of mins and restarted the engine but vibrations at low rpm persists. AT high there is no vobrations but Iam scared to release the pedal as it may switch off again. I am getting no warning or fault indication while running. The weather is moist and cold (17C).

What could be the issue for engine to switch off and low rpm vibrations.
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  #88  
Old 12-21-2011, 07:54 AM
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champaign777 champaign777 is offline
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looks like a misfire and not a cold start issue

Last edited by champaign777; 12-21-2011 at 10:29 AM.
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  #89  
Old 12-21-2011, 08:57 AM
IQBMW IQBMW is offline
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But mostly after 2 to 3 ingnition the rpm stabilise and vibrations stops. But this time RPM kept swinging bewteen 0 to 700 and no damping in vibration. What are the possible solutions.
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  #90  
Old 01-10-2012, 01:47 PM
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morrisroad morrisroad is offline
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I documented this on another thread, but 3 of the GB remanufactured injectors I received developed leaks. I replaced them with new VDO ones, but it has been relatively mild to access the situation in cold weather. Once it is around -10C, I will be sure to report.
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  #91  
Old 01-10-2012, 10:01 PM
jorjio_k jorjio_k is offline
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did u check the manifold itself for cracks?did u replace the manifold gaskets?
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  #92  
Old 01-14-2012, 06:33 AM
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morrisroad morrisroad is offline
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Today it was -18 C and so here is what I can report. But before I do, I need to lay out a scale to describe what cold rough idle means as I describe it. Let's say we have a scale 1-10 where 1 is a really bad, violent shaking, sputters or stalls and 10 means it runs without any misses slight or otherwise. In all the cases cold would be lower than -5C. When I first reported this problem, I would peg the rough idle was a 4 when it was cold and in one occasion a 2.

When I started it today at -18C I would peg it at a 9. The car started fine, idle slowly came down as it warmed up. On first start there was a very slight miss enough that could notice, this presence is less apparent as it warmed up. I would say that the last three things (DISA, filter, injectors) I did made the biggest difference with the most ancillary benefits (e.g. acceleration, car runs smoother). Note that I changed out the last leaky injector recently that came with the batch of rebuilds I purchased.

Given that I have done as much as I can do, my next step is to take it to the dealership and see if they can scope it out with more advanced tools.

I've checked the manifold, and don't believe its the manifold gasket.
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Last edited by morrisroad; 01-14-2012 at 06:35 AM.
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  #93  
Old 01-14-2012, 10:18 AM
jorjio_k jorjio_k is offline
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Quote:
Originally Posted by morrisroad View Post
Today it was -18 C and so here is what I can report. But before I do, I need to lay out a scale to describe what cold rough idle means as I describe it. Let's say we have a scale 1-10 where 1 is a really bad, violent shaking, sputters or stalls and 10 means it runs without any misses slight or otherwise. In all the cases cold would be lower than -5C. When I first reported this problem, I would peg the rough idle was a 4 when it was cold and in one occasion a 2.

When I started it today at -18C I would peg it at a 9. The car started fine, idle slowly came down as it warmed up. On first start there was a very slight miss enough that could notice, this presence is less apparent as it warmed up. I would say that the last three things (DISA, filter, injectors) I did made the biggest difference with the most ancillary benefits (e.g. acceleration, car runs smoother). Note that I changed out the last leaky injector recently that came with the batch of rebuilds I purchased.

Given that I have done as much as I can do, my next step is to take it to the dealership and see if they can scope it out with more advanced tools.

I've checked the manifold, and don't believe its the manifold gasket.
is it loosing coolant?if it is,there is a possibility that it is going into the cylinder thus giving the rough idle when first started?
How did you check the manifold?did u take it out?why you don't think it is the manifold gaskets?
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Last edited by jorjio_k; 01-14-2012 at 10:20 AM.
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  #94  
Old 01-23-2012, 09:33 AM
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No coolant is being lost.
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  #95  
Old 01-30-2012, 02:31 PM
NoBull NoBull is offline
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Quote:
Originally Posted by jorjio_k View Post
is it loosing coolant?if it is,there is a possibility that it is going into the cylinder thus giving the rough idle when first started?
How did you check the manifold?did u take it out?why you don't think it is the manifold gaskets?
Wouldn't this produce rough idle in ANY weather and not just cold weather?

I'm losing a little coolant and also have a very slight rough idle but only around 35F or lower temps.
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  #96  
Old 01-30-2012, 03:07 PM
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morrisroad morrisroad is offline
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The issues is not with warm idle - that's just fine. There are no coolant leaks. The issue, slight miss, presents when the weather is cold, at > -5C.
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  #97  
Old 01-31-2012, 07:22 AM
NoBull NoBull is offline
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morrisroad, that's my point. If coolant is leaking into the engine leaning the mixture I would think that would produce rough idle regardless of whether it's cold or not outside. Lean is lean. But maybe not?

Last edited by NoBull; 01-31-2012 at 01:56 PM.
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  #98  
Old 01-31-2012, 08:50 AM
UsedBits UsedBits is offline
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When warm and running (idling) smoothly, can you detect a misfire on *hard* acceleration? Not just from standing start, but also from, say, 40 to 90?

Unfortunately, I have no solution. My car (e39 540i) also has rough cold idle (codes indicate cylinders 1, 4, and 5) when cold, better when warm. But on two occasions, under hard acceleration, a detectable miss occurred right when the SES light began to flash.
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2002 e39 (540iA) with factory 'sport package' modified with:
'03 fr. and r. bumpers, front air ducts, and spoiler
18" Staggered MPars (style 37)
Dinan exhaust
shorter springs
European center console arm rest
VECTOR radar detector (non-working)

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[ /.....................\ ]
.|(oOO)\(lll)(lll)/(OOo)|
. \o\0=======|=======0/o/
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  #99  
Old 02-01-2012, 10:21 AM
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morrisroad morrisroad is offline
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With all of the changes (vanos, fuel filter, coils...) it runs very well when warm. The acceleration is without a miss.

As far a lean goes, coolant in engine, wouldn't we expect a drop in coolant levels if that was the case? I don't see this.
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  #100  
Old 02-03-2012, 03:25 AM
reestovee reestovee is offline
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When was the last time you changed the spark plugs? Worked to fix my problem.
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