low rpm problem

rosskie · 09-06-2011, 06:14 PM

well when im driving 1-3rd gear is find since its higher rpm in those gears i have no problem but in 4th 5th and 6th if its like 1k to 1.6k rpm and i give it gas it feels like the whole car is shaking and u can hear the intake sucking and stoping on and off. rpms jump up and down couple hundred and after it hits over 1.6k rpm its perfect.

i think it might be the throttle body but im not sure so just asking.

Syndicategt · 09-06-2011, 06:18 PM

When was the last time the coils, injectors, and plugs were changed? Any codes come up?

rosskie · 09-06-2011, 06:24 PM

no codes what so ever. all sparks were checked 1 was replaced.

**335i** · 09-06-2011, 06:31 PM

how many miles u have on your car?

rosskie · 09-06-2011, 06:33 PM

60k

the shop only replaced 1 since it was black but all others worked good

Syndicategt · 09-06-2011, 07:40 PM

Have them take another look at them (coils, injectors, plugs). Also, a good intake valve cleaning my help too, after 60K I bet they are pretty gunked up.

rosskie · 09-06-2011, 07:52 PM

how much does a valve cleaning cost? by a dealer

Beemw335 · 09-06-2011, 07:55 PM

Its alot of work to clean the valves! Forget the dealer theure gonna
Charge you a fortune.

ErvGotti · 09-06-2011, 08:23 PM

How do you justify just replacing one plug with 60k miles? Maybe the DME needs to readapt to that plug/cylinder as it was used to that plug running shitty.

rosskie · 09-07-2011, 09:29 AM

its been over 2k miles

Express · 09-07-2011, 09:30 AM

downshift?

Jeff@TopGearSolutions · 09-07-2011, 09:47 AM

Replace all the plugs. I never heard of someone replacing just one... they are so inexpensive just replace all.

If the car hasnt had updated HPFP, or injectors those could pose a problem as well. However,I think its the plugs they should all be replaced around 20-25K.

Eleventeen · 09-07-2011, 11:58 AM

Quote:

Originally Posted by rosskie

no codes what so ever. all sparks were checked 1 was replaced.

That's like shitting your pants, wiping your ass, and putting the same underwear back on...

09-06-2011, 06:14 PM	#1
rosskie Major 34 Rep 1,118 Posts Drives: 335 Join Date: Sep 2010 Location: albany or iTrader: (11)	low rpm problem well when im driving 1-3rd gear is find since its higher rpm in those gears i have no problem but in 4th 5th and 6th if its like 1k to 1.6k rpm and i give it gas it feels like the whole car is shaking and u can hear the intake sucking and stoping on and off. rpms jump up and down couple hundred and after it hits over 1.6k rpm its perfect. i think it might be the throttle body but im not sure so just asking.
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09-06-2011, 06:18 PM	#2
Syndicategt Brigadier General 153 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	When was the last time the coils, injectors, and plugs were changed? Any codes come up? __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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09-06-2011, 06:24 PM	#3
rosskie Major 34 Rep 1,118 Posts Drives: 335 Join Date: Sep 2010 Location: albany or iTrader: (11)	no codes what so ever. all sparks were checked 1 was replaced.
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09-06-2011, 06:31 PM	#4
335i Colonel 184 Rep 2,320 Posts Drives: TOYOTA & 2008 E92 335i 6MT Join Date: Jul 2007 Location: Swiss iTrader: (4) Garage List 2008 335i [9.00]	how many miles u have on your car? __________________ E92 335i Black Saphire 6MT PROcede V5, BMS DCI, Big Tom IC, AR CL-DP's 3", AR Design OC, Forge DV's, OEM M3 side skirts, BMW Performance Wheels 19 inch 269 Black Gloss+Continental ContiSportContact 5P (400hp and 550nm) https://www.youtube.com/user/aistis7..._as=subscriber
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09-06-2011, 06:33 PM	#5
rosskie Major 34 Rep 1,118 Posts Drives: 335 Join Date: Sep 2010 Location: albany or iTrader: (11)	60k the shop only replaced 1 since it was black but all others worked good
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09-06-2011, 07:40 PM	#6
Syndicategt Brigadier General 153 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Have them take another look at them (coils, injectors, plugs). Also, a good intake valve cleaning my help too, after 60K I bet they are pretty gunked up. __________________ 2008 BMW 335i e90 - Sold - Rob Beck Turbos / PROcede V5 / Aquamist HFS-4 / AR Downpipes / AE Exhaust / ER Comp FMIC / ER CP / TiAL BOV / Custom Intake / RPI Scoops / Quaife LSD / Swift-Koni Coilovers / DSS HS / Morr VS8.2 Sig Black / Michelin PSS / P3 Boost Guage / M3 body / M3 steering wheel / Adam's Rotors / Hawk HPS / SS lines /
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09-06-2011, 07:52 PM	#7
rosskie Major 34 Rep 1,118 Posts Drives: 335 Join Date: Sep 2010 Location: albany or iTrader: (11)	how much does a valve cleaning cost? by a dealer
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09-06-2011, 07:55 PM	#8
Beemw335 Colonel 62 Rep 2,013 Posts Drives: 335i Join Date: Mar 2011 Location: My car is my home iTrader: (2)	Its alot of work to clean the valves! Forget the dealer theure gonna Charge you a fortune.
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09-06-2011, 08:23 PM	#9
ErvGotti Major 124 Rep 1,362 Posts Drives: 2008 135i 6MT Join Date: Jul 2010 Location: Aviano iTrader: (5) Garage List 2008 135i [6.00]	How do you justify just replacing one plug with 60k miles? Maybe the DME needs to readapt to that plug/cylinder as it was used to that plug running shitty.
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09-07-2011, 09:29 AM	#10
rosskie Major 34 Rep 1,118 Posts Drives: 335 Join Date: Sep 2010 Location: albany or iTrader: (11)	its been over 2k miles
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09-07-2011, 09:30 AM	#11
Express Major General 369 Rep 8,693 Posts Drives: 06 330i Join Date: Dec 2008 Location: The Promise Land iTrader: (17) Garage List 2006 BMW 330i [8.30]	downshift?
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09-07-2011, 09:47 AM	#12
Jeff@TopGearSolutions 3441 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	Replace all the plugs. I never heard of someone replacing just one... they are so inexpensive just replace all. If the car hasnt had updated HPFP, or injectors those could pose a problem as well. However,I think its the plugs they should all be replaced around 20-25K.
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