Rough Idle

13M5F10 · 01-25-2016, 06:11 PM

Can anyone replicate this?

When you turn the steering wheel all the way to your left or right while in P. Do your RPMs bounce some?

Dealer said its normal. I'm not buying that

NightM · 01-25-2016, 08:31 PM

Happen to me all the time when its on Idle only tho, rpm drops like it will stall, its normal to me, then when you straighten the wheels it goes back to normal

13M5F10 · 01-25-2016, 08:32 PM

Quote:

Originally Posted by F10M5Manual

Happen to me all the time when its on Idle only tho, rpm drops like it will stall, its normal to me, then when you straighten the wheels it goes back to normal

Good to know. Thanks bro

When idle without wheels turned I don't see it as much. Sometimes feel the car vibrate and see the rpm move but nothing crazy.

NightM · 01-25-2016, 08:39 PM

Quote:

Originally Posted by 13M5F10

Good to know. Thanks bro

When idle without wheels turned I don't see it as much. Sometimes feel the car vibrate and see the rpm move but nothing crazy.

it only does it when you fully engage the turn on park, try going all the way till you can't turn no more you'll see and hear it...

BMWM5NYC · 01-25-2016, 11:14 PM

Most cars will do this if you turn to full lock it builds pressure in the power steering pump which in turn increases resistance on pulley which is driven by the engine, which in turn will make idle fluctuate. It is actually not good for the pump to hold at full lock for any extended time.

13M5F10 · 01-26-2016, 06:18 AM

Quote:

Originally Posted by bmwm3nyc

Most cars will do this if you turn to full lock it builds pressure in the power steering pump which in turn increases resistance on pulley which is driven by the engine, which in turn will make idle fluctuate. It is actually not good for the pump to hold at full lock for any extended time.

Agreed, I just didn't think it would bounce as bad as it does. I do not lock the steering wheel. Did it on accident one day and saw the RPM bounce.

01-25-2016, 06:11 PM	#1
13M5F10 Hide! My wife's coming! 812 Rep 2,816 Posts Drives: 2013 BMW M5 \| MSR Stage 3 Join Date: Jun 2015 Location: Las Colinas, TX iTrader: (5)	Rough Idle Can anyone replicate this? When you turn the steering wheel all the way to your left or right while in P. Do your RPMs bounce some? Dealer said its normal. I'm not buying that __________________ * SOLD * 2013 BMW M5 \| Space Grey \| MSR Stage 3 Tune \| Catless Downpipes \| MSR Intake and Charge Pipes \| MSR Exhaust (Prototype) \| Vorsteiner Rear Diffuser \| RW Carbon Front Lip \| RW Carbon Trunk Spoiler\| Vorsteiner VS-310 Forged Wheels \| Escort 9500CI w/Laser Jammers
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01-25-2016, 08:31 PM	#2
NightM Lieutenant Colonel 450 Rep 1,519 Posts Drives: Bmw Join Date: Nov 2015 Location: NY iTrader: (0)	Happen to me all the time when its on Idle only tho, rpm drops like it will stall, its normal to me, then when you straighten the wheels it goes back to normal
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01-25-2016, 11:14 PM	#5
BMWM5NYC Captain 496 Rep 812 Posts Drives: 2013 F10 Monte Carlo Blue M5 Join Date: Dec 2008 Location: NYC iTrader: (0)	Most cars will do this if you turn to full lock it builds pressure in the power steering pump which in turn increases resistance on pulley which is driven by the engine, which in turn will make idle fluctuate. It is actually not good for the pump to hold at full lock for any extended time.
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