ThumperNC24

iTrader: (1)

For some reason the car is having trouble finding an idle all of a sudden.

The car hasn't stalled out of me since I got it (6k miles) and I have having to continually jab the throttle to keep the thing running on the way back from the store.

After I got back the car dropped down to like 450 rpms then came back up to normal idle and continued to idle fine.

Oil pressure and everything seemed fine. The car also seemed to run fine when I had it in gear and just driving around, if I tried to coast it wanted to die though.

any idea what could be going on here?

mods are in sig, cam is 230/232 but it is tune and has never had a problem before. Normal idle ~975 rpm.

eseibel67

iTrader: (10)

Your IAC motor might be crapped out, or it may be dirty.

First I would remove it and clean the plunger with carb or intake cleaner. Also clean the hole it came out of in the throttle body.

ThumperNC24

iTrader: (1)

is this just in the side of the throttle body?

does it need any adjustment or anything going back in?

also, took it out today for a really short trip and it started up and idle normally.....wierd.

STREET99

iTrader: (3)

HEre is a Pic, It is the Sensor that in on the top of the throttle body

eseibel67

iTrader: (10)

And no adjustment needed when re-installing.

LS6427

iTrader: (2)

Failing 02 sensors will cause your issues too. And you won't get an SES light or a code till it fails totally or until it gets really bad. While they're failing they will also have good and bad times.


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ThumperNC24

iTrader: (1)

I cleaned it off and it helped a little but I think she is going to need replaced.....

any way to tell between the o2s and the IAC?

wouldn't the car being running weak all the time if the o2s were having issues?

The car runs great other than idle.

ThumperNC24

iTrader: (1)

bump, I really would like to avoid firing the parts cannon - considering how that IAC is $105 and o2s aren't that cheap either......

LastHawk

FWIW, I'm just throwing this out there because I had a similar problem a few weeks ago. Car would not keep idle unless I kept the throttle up.

Got home and my positive terminal on the battery was loose.....

Tightened it up, fixed.