73brewstersd

iTrader: (1)

How do you lower idle RPM's? Is it by tune or old school?

NHRAMAN

iTrader: (1)

I use my VINCI/CRANE Tuner......there is a screw under the throttle body u can adjust also though...someone else should chime in..I know you need a small ALLEN WRENCH.

davered00ss

iTrader: (4)

Like said, a tune is the way to go but you can play with the bump stop on the throttle blade.

ringram

If you mess with the stop the IAC is likely to open more to get it back to the ECU set idle

kokingSS

iTrader: (2)

tune!

RE AND CHERYL

iTrader: (31)

You have to retune the PCM. ALthough backing out the screw on the TB will lower the idle, the idle bypass solidoid will be maxed out and the engine won't idle at all when cold.

Why do you want to lower the idle??? Is your current idle rpm too high?? If so you have a problem elsewhere. Probably a bad or sticking idle solinoid.

Re'

73brewstersd

iTrader: (1)

My car before I put it away for the winter was idling about 1300-1500RPM even when warm. Normal is 1K, I was just wondering if something was up. I'll have to check the solenoid to see if that's the case. I also plan on putting a bigger Cam in and would like it to idle at a lower RPM stricly for a nice lumpy sound

jmm98LS1

iTrader: (28)

Sounds like you might have a vacuum leak.

JoePZ28

iTrader: (2)

x2 or a IAC going out. Check the intake gaskets and the map sensor Oring.

black01_WS6

iTrader: (13)

or it is just cold outside with oil that is made for the summer. I know my car hated the cold weather and would do the same up north. When I came down to florida it never did it again.

kyles2000z

iTrader: (8)

oil thats made for the summer?

you can adjust idle by tune OR by screw.

Bad Blue WS6

iTrader: (41)

they are talking about oil weight...im guessing.

4mula4ever

iTrader: (4)

[QUOTE=kyles2000z;8751015]oil thats made for the summer?QUOTE]


I don't know for sure but he is probably refering to a heavier oil for the summer compared to a lighter one for the winter.

Scoggin Dickey

iTrader: (34)

Don't try to adjust it with the screw, it will likely just end up worse. If it is mysteriously idling higher, look for a vacuum leak etc as suggested above. Your idle speed didn't just raise itself to a point that requires adjustment.