Strange idle.. help needed..

Papa13 · 03-07-2010, 06:25 PM

I've been having this problem for the past couple weeks. Occasionally when coming to a slow stop the car will shudder, and lunge forward. Seems to me like the behaviors of a car that is starving for gas, therefore I thought it was a fuel problem, so I had my fuel pump replaced and that did not solve the problem. Anyone else ever have symptoms like this on a n54? And what was the cause?

The car is a 135i with jb3, catless dp and intake. Automatic.

Thanks for any help guys.

Syndicategt · 03-07-2010, 06:48 PM

Are the RPM bouncing from 600-2000 ? If that's the case, then you might need your injectors replaced. I had this happen a while back and the new injectors fixed the hard idling. It started doing it again recently, I threw some Techron in it and seemed to have stopped it.

Marcadelic · 03-07-2010, 09:03 PM

Same thing is happening to me, thats what my car was doing a few days ago, then yesterday it go worse and now the car shakes when ever I excellerate, I would call bmw and see what they say

03-07-2010, 06:25 PM	#1
Papa13 Go Gators! 91 Rep 1,621 Posts Drives: e82 / e90 / e53 / e46 Join Date: Nov 2005 Location: Tampa / SoCal iTrader: (5) Garage List 2009 135i [0.00]	Strange idle.. help needed.. I've been having this problem for the past couple weeks. Occasionally when coming to a slow stop the car will shudder, and lunge forward. Seems to me like the behaviors of a car that is starving for gas, therefore I thought it was a fuel problem, so I had my fuel pump replaced and that did not solve the problem. Anyone else ever have symptoms like this on a n54? And what was the cause? The car is a 135i with jb3, catless dp and intake. Automatic. Thanks for any help guys. __________________ e90 M-Tech 330i JB/Terra / e82 n54 135i AW/CR 420rwhp 444rwtq - RIP e53 X5 4.8is M///BLUE/M///SUEDE - 357whp 369wtq - The Snow Beast! n54 135i JB/CR JB4 FBO - Tc Kline D/A Coils - 11.5 @ 122mph 1/4 mile 18' Blue/Black SEL Premium R-Line 4 Motion Tiguan - Mods on order
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03-07-2010, 06:48 PM	#2
Syndicategt Brigadier General 156 Rep 3,730 Posts Drives: 335i Join Date: Sep 2009 Location: Nor Cal iTrader: (11)	Are the RPM bouncing from 600-2000 ? If that's the case, then you might need your injectors replaced. I had this happen a while back and the new injectors fixed the hard idling. It started doing it again recently, I threw some Techron in it and seemed to have stopped it. __________________ 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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03-07-2010, 09:03 PM	#3
Marcadelic Instagram: @Marcadelic 243 Rep 2,697 Posts Drives: 335is Join Date: Jan 2010 Location: Tampa iTrader: (4)	Same thing is happening to me, thats what my car was doing a few days ago, then yesterday it go worse and now the car shakes when ever I excellerate, I would call bmw and see what they say __________________ \| New: 2018 F80 M3 \| Old: 335i / 335is \| Instagram: Marcadelic \|
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