Stumbling Idle

speedracer2169 · 09-08-2016, 12:37 AM

So this just started on Thursday and I'm kind of at a loss on what to do next. I already replaced the MAP sensor, decarbon the intake manifold and throttle body replaced coils and plugs... Any help would be appreciated. Thanks

FEDE/E92 · 09-08-2016, 01:03 AM

You try resetting adaptations?

nicegsxr · 09-08-2016, 01:29 AM

CPS might be going south

speedracer2169 · 09-08-2016, 11:39 AM

Quote:

Originally Posted by nicegsxr

CPS might be going south

CPS? can you elaborate a little please?

speedracer2169 · 09-08-2016, 11:40 AM

Quote:

Originally Posted by FEDE/E92

You try resetting adaptations?

Unfortunately I don't have a scan tool to do that? Do you recommend someone that can do it?

E9TOU · 09-08-2016, 12:15 PM

Is it a rough idle? Does the engine shake erratically when it does that? I had a similar thing happen to me and it was bad injectors.

speedracer2169 · 09-08-2016, 12:46 PM

Quote:

Originally Posted by E9TOU

Is it a rough idle? Does the engine shake erratically when it does that? I had a similar thing happen to me and it was bad injectors.

No it's not a rough idle. It sometimes corrects itself if i let it idle for a while. It got better when I replaced the coils and spark plugs but it's still there. Very annoying when sitting in traffic or next to a mustang at a red light thinking I'm trying to race him. No misfires under full throttle pulls like a champ just the idle is driving me nuts.

alpin3d3vil335 · 09-08-2016, 01:16 PM

Have you tried reading codes?

I have a Schawben scan tool that is capable of adaptation resets. Located in Downey also.

FEDE/E92 · 09-08-2016, 02:05 PM

Quote:

Originally Posted by speedracer2169

Unfortunately I don't have a scan tool to do that? Do you recommend someone that can do it?

Where are you located?

nicegsxr · 09-08-2016, 02:56 PM

Quote:

Originally Posted by speedracer2169

CPS? can you elaborate a little please?

Did you car ever stall? Or all of sudden the powerband seems off?

speedracer2169 · 09-08-2016, 03:52 PM

Quote:

Originally Posted by alpin3d3vil335

Have you tried reading codes?

I have a Schawben scan tool that is capable of adaptation resets. Located in Downey also.

If you dont mind helping me out I would apprciate it. I usually get home around 7pm.

speedracer2169 · 09-08-2016, 03:53 PM

Quote:

Originally Posted by FEDE/E92

Where are you located?

I'm in Downey

speedracer2169 · 09-08-2016, 03:55 PM

Quote:

Originally Posted by nicegsxr

Did you car ever stall? Or all of sudden the powerband seems off?

Never stalled it almost wants to shut off though but it catches itself and eventually smooths itself out. It pulls hard through all gears and after pushing it hard it will idle fine for a bit and then the idle starts to stumble. It's never consistent either the stumbling will start very light, get heavy then light again and if left sitting long enough it will fix itself

alpin3d3vil335 · 09-08-2016, 04:31 PM

Quote:

Originally Posted by speedracer2169

If you dont mind helping me out I would apprciate it. I usually get home around 7pm.

PM me.

GoRomeo · 09-08-2016, 04:36 PM

check for vacuum leaks. Maybe something is not back in place. hoses etc...
any codes?

speedracer2169 · 09-08-2016, 07:07 PM

Quote:

Originally Posted by GoRomeo

check for vacuum leaks. Maybe something is not back in place. hoses etc...
any codes?

I'm going to see if there any codes stored on there. For now there is none and no check engine light

sunny · 09-08-2016, 07:45 PM

Every bmw owner should get scan tool expecially if they are out of warranty.

GoRomeo · 09-08-2016, 07:54 PM

The problem is that even if they get one they wont know how to use it...

speedracer2169 · 09-08-2016, 07:58 PM

What scan tool do you guys recommend?

speedracer2169 · 10-19-2016, 07:17 PM

Throttle body map sensor replaced, map sensor on the piping was cleaned, fuel pressure regulator replaced still having the idle problem. anything else that I'm missing?

eyzz21 · 10-19-2016, 09:01 PM

I had the exact same problem. Its the injectors. I was not getting any codes either. After i got 6 new index 12 injectors and got them coded, the problem was fixed.

speedracer2169 · 10-20-2016, 10:39 AM

Quote:

Originally Posted by eyzz21

I had the exact same problem. Its the injectors. I was not getting any codes either. After i got 6 new index 12 injectors and got them coded, the problem was fixed.

Is there a way to test the injectors?

09-08-2016, 12:37 AM	#1
speedracer2169 New Member 8 Rep 21 Posts Drives: 07 335i Sedan Join Date: May 2015 Location: Downey, Ca iTrader: (0)	Stumbling Idle So this just started on Thursday and I'm kind of at a loss on what to do next. I already replaced the MAP sensor, decarbon the intake manifold and throttle body replaced coils and plugs... Any help would be appreciated. Thanks
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09-08-2016, 01:03 AM	#2
FEDE/E92 Lieutenant 105 Rep 544 Posts Drives: 2007 BMW 335i Join Date: Jun 2012 Location: Vacaville, CA iTrader: (3)	You try resetting adaptations?
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09-08-2016, 01:29 AM	#3
nicegsxr New Member 2 Rep 8 Posts Drives: Porsche 911 C2S Join Date: Jul 2010 Location: Los Angeles iTrader: (0)	CPS might be going south
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09-08-2016, 12:15 PM	#6
E9TOU Captain 233 Rep 646 Posts Drives: 2010 E92 335i Join Date: Apr 2008 Location: Goleta, CA iTrader: (2) Garage List 2010 BMW E92 335 [8.00]	Is it a rough idle? Does the engine shake erratically when it does that? I had a similar thing happen to me and it was bad injectors.
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09-08-2016, 01:16 PM	#8
alpin3d3vil335 ST 5 Rep 23 Posts Drives: 09 335 sedan Join Date: Dec 2014 Location: Downey, Ca iTrader: (0)	Have you tried reading codes? I have a Schawben scan tool that is capable of adaptation resets. Located in Downey also. Last edited by alpin3d3vil335; 09-08-2016 at 01:22 PM..
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09-08-2016, 04:36 PM	#15
GoRomeo Brigadier General 1266 Rep 4,175 Posts Drives: 330i, 135i Join Date: Feb 2006 Location: San Diego CA iTrader: (0) Garage List 2008 BMW 135i [9.50] 2006 330i [6.75]	check for vacuum leaks. Maybe something is not back in place. hoses etc... any codes?
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09-08-2016, 07:45 PM	#17
sunny Lieutenant 48 Rep 476 Posts Drives: E92 M3, e90 330i Join Date: May 2008 Location: central CA iTrader: (1)	Every bmw owner should get scan tool expecially if they are out of warranty.
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09-08-2016, 07:54 PM	#18
GoRomeo Brigadier General 1266 Rep 4,175 Posts Drives: 330i, 135i Join Date: Feb 2006 Location: San Diego CA iTrader: (0) Garage List 2008 BMW 135i [9.50] 2006 330i [6.75]	The problem is that even if they get one they wont know how to use it...
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09-08-2016, 07:58 PM	#19
speedracer2169 New Member 8 Rep 21 Posts Drives: 07 335i Sedan Join Date: May 2015 Location: Downey, Ca iTrader: (0)	What scan tool do you guys recommend?
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10-19-2016, 07:17 PM	#20
speedracer2169 New Member 8 Rep 21 Posts Drives: 07 335i Sedan Join Date: May 2015 Location: Downey, Ca iTrader: (0)	Throttle body map sensor replaced, map sensor on the piping was cleaned, fuel pressure regulator replaced still having the idle problem. anything else that I'm missing?
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10-19-2016, 09:01 PM	#21
eyzz21 Private First Class 31 Rep 142 Posts Drives: BMW 435i GC Join Date: Apr 2015 Location: Rowland Heights iTrader: (2)	I had the exact same problem. Its the injectors. I was not getting any codes either. After i got 6 new index 12 injectors and got them coded, the problem was fixed.
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