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idle stumble on start - then OK - ...UPDATE - FIXED!
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idle stumble on start - then OK - ...UPDATE - FIXED!
2006 Z4 E85 3.0si
EDIT (add)---Engine is an N52
I have done lots to this car since I purchased it in January, she is now road worthy (IMO) - including new plugs and coils, gaskets, alignment, tires, and cosmetics ...
I do however have an issue that is bothersome, perhaps someone on this forum has experienced it or knows the likely cause?....
Warm or cold...every time I start it, the idle stumbles up and down 50/75 rpm of the target idle RPM. this lasts for 5-15 seconds then settles in and all is great till next time I start it.
DISA?
VANOS?
Bueller?
EDIT (add)---Engine is an N52
I have done lots to this car since I purchased it in January, she is now road worthy (IMO) - including new plugs and coils, gaskets, alignment, tires, and cosmetics ...
I do however have an issue that is bothersome, perhaps someone on this forum has experienced it or knows the likely cause?....
Warm or cold...every time I start it, the idle stumbles up and down 50/75 rpm of the target idle RPM. this lasts for 5-15 seconds then settles in and all is great till next time I start it.
DISA?
VANOS?
Bueller?
Last edited by Migizi on Wed Jun 12, 2019 11:44 am, edited 4 times in total.
2006 BMW Z4 3.0si
- Smartbear
- Lifer
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idle stumble on start - then OK
Add eccentric cam sensor to that list, you can unplug it to see if the idle becomes steady
Rob
Rob
e89 Sdrive 20i, plenty of mumbo & good economy-the thinking bears z4
e89 Sdrive 30i, this ones busted, pass me another...
e85 3.0si sold
- ph001
- Lifer
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idle stumble on start - then OK
50 - 75rpm sounds pretty minor and if it only lasts 10 seconds or so I’m not sure I would be worrying about it. I think they all do that to some degree. I suppose you could take the vanos solenoids out and give them a good clean just because it’s easy to do but I don’t think I would be stripping eccentric shaft sensors and valvetronic motors apart at this stage.
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idle stumble on start - then OK
Mine does this too but usually only on warm start, clears after about 10 seconds or so. Going to start by cleaning the vanos solenoids.
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idle stumble on start - then OK
Mine does this too, 3.0si, usually on a cold start. Lasts about 10 seconds. Not been an issue so far, but might consider looking at VANOS solenoids further down the line if gets worse.
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idle stumble on start - then OK
Although no service light, I ran diagnostics with Carly and found this...
Engine / Motor
Fault Code: 002C7E
Fault Explanation: :Lambda probe on the catalyst, trimming control
Does anyone know which one of these o2 probe/sensors is Carly referencing , I certainly don’t want to replace a good probe
Engine / Motor
Fault Code: 002C7E
Fault Explanation: :Lambda probe on the catalyst, trimming control
Does anyone know which one of these o2 probe/sensors is Carly referencing , I certainly don’t want to replace a good probe
2006 BMW Z4 3.0si
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idle stumble on start - then OK
I fixed it!
Using INPA, I did a Valvtronic Adaptation reset
Using INPA, I did a Valvtronic Adaptation reset
2006 BMW Z4 3.0si
- wonkydonkey
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idle stumble on start - then OK - ...UPDATE - FIXED!
Winner!
Previous:
~2006 Z4MR in Silver Grey
~2003 3.0i E85 in Sterling Grey
Click here for the Sticky Steering thread
<My name is James>
~2006 Z4MR in Silver Grey
~2003 3.0i E85 in Sterling Grey
Click here for the Sticky Steering thread
<My name is James>
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- Lifer
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idle stumble on start - then OK - ...UPDATE - FIXED!
Who's a clever boy
BMW Z4 30i 2003 auto 107's Whippy Toledo Blue
Beige M sport seats, wood dash
Toyota MR2 NA 1995
Triumph GT6 1972 (project)
Land Rover Discovery 1994 TDI (Tow car)
Mini 1000 1981
Beige M sport seats, wood dash
Toyota MR2 NA 1995
Triumph GT6 1972 (project)
Land Rover Discovery 1994 TDI (Tow car)
Mini 1000 1981
- kis
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idle stumble on start - then OK - ...UPDATE - FIXED!
Out of interest was this anything to do with the fault code stored? (That you mentioned previously?)
My E85 Z4 3.0i SMG
BMW Family History (past and present):
1 Series - E87
3 Series - E46 Coupe, E46 M3, E90 (x3)
4 Series - F36, F82 M4
5 Series - E34 (x2), E39
7 Series - E32
X5 - E53, E70
X6 - E71
BMW Family History (past and present):
1 Series - E87
3 Series - E46 Coupe, E46 M3, E90 (x3)
4 Series - F36, F82 M4
5 Series - E34 (x2), E39
7 Series - E32
X5 - E53, E70
X6 - E71
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- ph001
- Lifer
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idle stumble on start - then OK - ...UPDATE - FIXED!
Can you run through how you get to this in INPA please? Sounds like a few cars might benefit from it as time goes on.
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idle stumble on start - then OK - ...UPDATE - FIXED!
The above would be beneficial, for sure.
Also - I see a lot of people suggesting that you can remove the eccentric position sensor whilst the car is runninig.... If you do this to mine, it dies... Is this evidence of a fault with it?
Also - I see a lot of people suggesting that you can remove the eccentric position sensor whilst the car is runninig.... If you do this to mine, it dies... Is this evidence of a fault with it?
E86 | Stratus Grey
- Flyingfifer
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idle stumble on start - then OK - ...UPDATE - FIXED!
+1 I had this issue and several others had the same
Damn good work Migizi!
2006 3.0Si Coupé in Monaco Blau with all the optional trimmings
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