Ed992

hey so ive been out of town for more than a month and my cars been sitting in the garage. I started it up and the idle is really low and it sputters. Ive driven it for a few days and its still the same. any solutions?? its a stock d16y7 btw. thanks

dth0ng69

i kinda have the same problem, except my idle is really low when I first start it up in the morning, and throughout the day it progressively gets better, until the next morning again..

Former User

Is the CEL ON?

You may to clean the IACV on the throttle body.

Tractor_Boy

yeah, sounds like an IAC valve problem

AphexMatt

Will an IACV problem always throw a code? I have a similar problem yet no CEL.

Tractor_Boy

only if the ECU senses a signal problem........ but as long as its between low and high limit it wont think anything is wrong

superd16girl

I had a similar problem and it was the TPS.

Tractor_Boy

thats also a possible cause, and the same rule stated above applies

Ed992

k thanks ill check that out, and yea the cel is on but its cuz i need a new o2 sensor. getting a new pcv valve should help too right??

Former User

Pull the CEL codes again to make sure a new one has not popped up. A clogged PCV valve may also cause a low idle, so it's worth checking too. Regarding the O2 sensor code, does the low idle only happen after the engine has warmed up?

Ed992

actually yea thats what happens. after it warms up it just dies down. thats related to the o2 code??

Former User

Test: Unplug the primary O2 sensor to see whether the problem goes away.