RPM fluctuating at idle issue

wdkwang · 07-28-2015, 01:25 AM

47k miles on a '10.
When I'm stopped at a light or just idling the car, the RPM would periodically drop to about 450 and then quickly move back up to normal around 700. Car has never stalled on me randomly, but it's been a concern for the last 1.5-2 years that this has been happening. Anyone else have this issue or can provide insight to what the problem may be? Thanks.

DIGItonium · 07-28-2015, 09:14 AM

Have you cleaned the throttles and/or sensors?

JARblue · 07-28-2015, 09:55 AM

Time for a throttle body cleaning.

wdkwang · 07-28-2015, 05:03 PM

I will look into that. Thanks so much guys.

GZ3 · 07-28-2015, 06:24 PM

Clean your maf too

falicfr · 07-29-2015, 09:27 AM

Quote:

Originally Posted by GZ3

Clean your maf too

SouthArk370Z · 07-29-2015, 10:03 AM

I'd try cleaning the MAFs first - easy and cheap. If that doesn't make things better, attack the TBs.

chuckie311 · 08-01-2015, 07:49 PM

Clean the throttle bodies then do a throttle body relearn

juld0zer · 08-09-2015, 07:41 AM

relearn is a must. there is 3 relearns you must do, and follow the steps to a T.

Jsolo · 08-09-2015, 02:15 PM

Quote:

Originally Posted by juld0zer

relearn is a must. there is 3 relearns you must do, and follow the steps to a T.

There's the idle air volume, what are the other 2?

critical · 08-09-2015, 02:35 PM

x 3 Throttle bodies . I never did a relearn and it fixed it

Jsolo · 08-09-2015, 11:13 PM

^^What?

07-28-2015, 01:25 AM	#1 (permalink)
wdkwang Track Member Join Date: Nov 2010 Location: N/A Posts: 899 Drives: slidewayz Rep Power: 20	RPM fluctuating at idle issue 47k miles on a '10. When I'm stopped at a light or just idling the car, the RPM would periodically drop to about 450 and then quickly move back up to normal around 700. Car has never stalled on me randomly, but it's been a concern for the last 1.5-2 years that this has been happening. Anyone else have this issue or can provide insight to what the problem may be? Thanks. __________________ Powerhouse Amuse \| K&N Typhoon Intakes \| MotorDyne ART Pipes \| Borla Catback Exhaust \| B&M Short Shifter \| Intake Ducts \| Ichiba 25mm F/R Spacers \| Carbon Fiber Interior Vinyl Wrap \| Tints \| 10000k HIDs \| Vtak, yo!

07-28-2015, 09:14 AM	#2 (permalink)
DIGItonium A True Z Fanatic Join Date: Jan 2009 Location: Kansas Posts: 3,800 Drives: 09 Z34-TT 6MT Rep Power: 42	Have you cleaned the throttles and/or sensors? wdkwang and Smashley like this. __________________

07-28-2015, 09:55 AM	#3 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,449 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	Time for a throttle body cleaning. wdkwang and Smashley like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

07-28-2015, 05:03 PM	#4 (permalink)
wdkwang Track Member Join Date: Nov 2010 Location: N/A Posts: 899 Drives: slidewayz Rep Power: 20	I will look into that. Thanks so much guys. __________________ Powerhouse Amuse \| K&N Typhoon Intakes \| MotorDyne ART Pipes \| Borla Catback Exhaust \| B&M Short Shifter \| Intake Ducts \| Ichiba 25mm F/R Spacers \| Carbon Fiber Interior Vinyl Wrap \| Tints \| 10000k HIDs \| Vtak, yo!

07-28-2015, 06:24 PM	#5 (permalink)
GZ3 A True Z Fanatic Join Date: Dec 2009 Location: SATX Posts: 3,296 Drives: Z Rep Power: 21	Clean your maf too __________________ 09 GT-R 12' 370Z 7AT HANDED DOWN 12'+13' 5.0 SOLD

07-29-2015, 10:03 AM	#7 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324197	I'd try cleaning the MAFs first - easy and cheap. If that doesn't make things better, attack the TBs. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

08-01-2015, 07:49 PM	#8 (permalink)
chuckie311 Enthusiast Member Join Date: Jul 2012 Location: las vegas Posts: 313 Drives: Q50/G37 Rep Power: 12	Clean the throttle bodies then do a throttle body relearn __________________ Tuned by (Seb@Specialty-Z) 2011 G37 Cam'd FBO 347whp 280wtq Corn Fed 4.08 Gears

08-09-2015, 07:41 AM	#9 (permalink)
juld0zer Enthusiast Member Join Date: Nov 2012 Location: Sydney Posts: 428 Drives: 11 Nissan 370Z MB M6 Rep Power: 138	relearn is a must. there is 3 relearns you must do, and follow the steps to a T.

08-09-2015, 02:35 PM	#11 (permalink)
critical A True Z Fanatic Join Date: Oct 2012 Location: Washington Posts: 1,252 Drives: 09' 370z 7AT Rep Power: 15	x 3 Throttle bodies . I never did a relearn and it fixed it __________________ Quaife w/ gears \|Stillen Gen 3\|SOLD FI Resonated Test Pipes \|SOLD FI 18'' \| 25row Stillen Race \| Progress 35mm/25mm sways \| Swifts/Koni\|Volk G25's\| Stoptech SS lines\|\|SPL Front/Rear Arms\|

08-09-2015, 11:13 PM	#12 (permalink)
Jsolo Track Member Join Date: Dec 2011 Location: chicago Posts: 783 Drives: '12 G37 6MT Rep Power: 14	^^What? __________________ G37S Sedan 6MT, Eibach swaybars, Invidia Exhaust, Weaker Clutch Pedal Spring For sale links

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