Nissan 370Z Forum - View Single Post - Can someone explain to me RPM at Idle and why it changes …

BossJ · 08-24-2021, 10:31 AM

Hey guys,

So I’ve always wondered about this, and I’m not sure I’m asking google and searching the right question…

My question is - Why does RPM change at idle. Let me expand on that.

So I get why AC affects RPM - You’ll have a much lower RPM with no AC than with AC.

But for instance, I live in FL - it seems that weather affects the RPM range at idle as well?

Some days at idle, with AC on - I’m between 800-837 and other days I’m 865-880 (something like that)

Why is this?

Why I ask - is because it makes quite a different in idle volume in the cab

Thanks.

08-24-2021, 10:31 AM	#1 (permalink)
BossJ Base Member Join Date: Oct 2015 Location: Florida Posts: 116 Drives: 16 370z Nismo 6MT Rep Power: 9	Can someone explain to me RPM at Idle and why it changes … Hey guys, So I’ve always wondered about this, and I’m not sure I’m asking google and searching the right question… My question is - Why does RPM change at idle. Let me expand on that. So I get why AC affects RPM - You’ll have a much lower RPM with no AC than with AC. But for instance, I live in FL - it seems that weather affects the RPM range at idle as well? Some days at idle, with AC on - I’m between 800-837 and other days I’m 865-880 (something like that) Why is this? Why I ask - is because it makes quite a different in idle volume in the cab Thanks. __________________ 2016 Pearl White 370Z Nismo (6ma) \|\| Z1 CAI \|\| Greddy GT X \|\| FI Resonated Test Pipes \|\| Ported Manifolds \|\| Fuel Pump: aem50-1200 \|\| 1050cc Fuel Injectors \|\| E85 \|\| RJM Performance Clutch \|\| ECUTECH - SpecialtyZ (Seb)