correct idle rpms

stick · 12-29-2004, 11:46 AM

do any of you out there in titan land know what the correct (read:what the factory setting/best for gas mileage is) idling rpms should be? when my truck is in park it seems to idle around 1000-1200 and when it has a load (at a stop light in drive with the brake on) it runs a little under 1000. the reason i ask is it seems like its idling a little 'hot'. so i don't know if a 'hot' idle could be a sign of something that needs to be adjusted that may also help with gas mileage. thanks

Optimist · 12-29-2004, 01:00 PM

Yes that’s high, don’t know off hand but a sticker under the hood should tell correct warm idle.

scr38 · 12-29-2004, 01:20 PM

Correct idle speed (with engine warmed up) is 650 RPM +- 50 RPM.

stick · 12-29-2004, 01:30 PM

can you adjust it yourself or is it a dealer issue? technically if nothing needs to be adjusted, how long before the idle should drop to 650-700?

scr38 · 12-29-2004, 02:53 PM

Take it to the dealer; there may be other issues involved. The lenght of time it takes to drop to 650 depends on several factors - outside temp, load on engine, etc. But it should drop to the proper RPM quickly if warm; it may take 5-10 minutes if it is cold.

dman · 12-29-2004, 04:56 PM

Quote:

Originally Posted by scr38

Correct idle speed (with engine warmed up) is 650 RPM +- 50 RPM.

Is this in gear or park? Seems like that would be in gear (drive).

scr38 · 12-29-2004, 07:15 PM

Quote:

Originally Posted by dman

Is this in gear or park? Seems like that would be in gear (drive).

In park or neutral.

stick · 12-29-2004, 10:33 PM

if it is running 'hot' does that affect gas mileage when you are driving or is it just during idle? (ie. does high idle indicate something that will affect other gas mileage issues?)