really high idle SOLVED

what huh · Post by **what huh** » Wed May 28, 2008 9:34 pm

I unplugged my IAC and thats drops my idle from 4000 to 2500 rpms so thats not the problem.

Anybody else have any other ideas, as to a solution?

ciper · Post by **ciper** » Wed May 28, 2008 9:46 pm

I'd say no.

Ej22TIM · Post by **Ej22TIM** » Thu May 29, 2008 3:31 am

you need a new iac.

or if you have a topmount make sure your intake boot isnt ripped.

Post by **Legacy777** » Thu May 29, 2008 5:35 pm

Before you go and replace anything, can you give a little more info as to the background of the engine setup, etc. Did this all of a sudden occur, are you doing some work, and not have everything complete, etc.

what huh · Post by **what huh** » Thu May 29, 2008 5:52 pm

this project started in three peices: shell, engine, tranny . . . the major peices anyways.

It has been going this since the first start up, but hasn't been runnig for more than 30 secs each time it has been started

the IAC would make since tho, because when i got the car it was dangling by the wire

Post by **Legacy777** » Thu May 29, 2008 6:03 pm

unplug the IAC connector, start the car and see if you get the same high idle characteristics.

what huh · Post by **what huh** » Thu May 29, 2008 7:29 pm

ah . . . . . thats a good idea

you know if it wasn't for you all, the world would be a Legacy-less place.

There are a countless number of people with a countless number of answer and i don't know what i would do with out them

Fkyx · Post by **Fkyx** » Thu May 29, 2008 8:52 pm

My car jumps up to about 2500 when I start it up, and it doesn't normally drop below 1000 (when it does drop) until it's at operating temperature.

Maybe yours will drop if you let it warm up a little more.

what huh · Post by **what huh** » Thu May 29, 2008 11:09 pm

yeah thats what my buddy was thinking

ericem · Post by **ericem** » Fri May 30, 2008 12:18 am

what huh wrote:yeah thats what my buddy was thinking

Maybe your coolant sensor is the problem? The ECU one then.

what huh · Post by **what huh** » Sat May 31, 2008 1:42 am

i unpluged the IAC and the idle dropped to 2k rpms.

so im going to get a new one and see what happens

ciper · Post by **ciper** » Sat May 31, 2008 3:42 am

Did you try turning the shaft while the car was running?

what huh · Post by **what huh** » Sat May 31, 2008 6:54 pm

you mean like trying to drive it

what huh · Post by **what huh** » Wed Jun 04, 2008 11:34 pm

Ok so i unpluged the the IAC and the idle dropped down to 2500 from 4000.

Any Ideas on to why the idle is still high?

ChesterKV · Post by **ChesterKV** » Thu Jun 05, 2008 12:32 am

what huh wrote:Ok so i unpluged the the IAC and the idle dropped down to 2500 from 4000.

Any Ideas on to why the idle is still high?

Have you tried cleaning the IAC ? On the EJ22 n/a (I'm guessing yours is similiar or identical) you remove the IAC from the intake manifold and then it comes apart into two sections. Some coolant will spill so only do this when the engine is cold. Buy a new gasket for reinstalling the IAC or you can try reusing the old one.

IAC on left (throttle body on right) removed from intake manifold

Mark the position of the screws with a marker of some kind... you may still see the white factory marks so you can also use those. I can't remember if the brake cleaner cleans off the factory white marks so perhaps it's best to use a permanent marker.

Popping the top off....... there's some funky magnetic resistance but it'll come off.

Shoot a lot of brake cleaner into this green area while rotating the shaft around. You should see black residue come out. All you're really doing is cleaning the area enough to allow the shaft to rotate correctly again. Don't forget to apply brake cleaner to the hole in the top that you removed.

Reinstall everything taking care to have the top EXACTLY where it was before you removed it from the main body. Reinstall IAC with new (perhaps used depending upon condition) gasket. Try pinching the skinny coolant lines to help purge the air out.

You should be good to go now.

When I did this my high idle (I think it was over 3,500 rpm) at start up immediately went away.

-Chester

.

what huh · Post by **what huh** » Thu Jun 05, 2008 12:47 am

k i will d this as soon as i get another gasket, because mine is bad.

ciper · Post by **ciper** » Thu Jun 05, 2008 1:27 am

what huh wrote:k i will d this as soon as i get another gasket, because mine is bad.

Uhh... I'd wager that was the problem in the first place!

what huh · Post by **what huh** » Thu Jun 05, 2008 3:29 am

because of the bad gasket comment?

ciper · Post by **ciper** » Thu Jun 05, 2008 3:33 am

If the gasket is bad it will let air into the intake after the throttle plate! That would raise the idle substantially.

what huh · Post by **what huh** » Thu Jun 05, 2008 3:42 am

yeah but i dont know if it was bad before i took it off. But it did break when i pulled it off

So now i have to replace it haha

WOOOHOOOOO Second Gear

what huh · Post by **what huh** » Tue Jul 22, 2008 12:07 am

that wasn't the problem

what huh · Post by **what huh** » Thu Jul 24, 2008 8:40 pm

anybody

what huh · Post by **what huh** » Sun Jul 27, 2008 3:05 am

could it be my throttle position sensor

what huh · Post by **what huh** » Sun Jul 27, 2008 10:40 pm

So I get done putting in the new IAC gasket and same problem 4000rpm idle

And then i checked for vacuum leaks . . . NONE

and then me and friend were staring at my car and i noticed that the . . .

FRECKING SET SCREW IS SCREWED IN

so i turned it back and she idled at 800rpm and then i started to smile. And i dont think im going to sell her anymore

94SS_Canada · Post by **94SS_Canada** » Mon Jul 28, 2008 12:15 am

What is the Set screw?

Does that regulate idle?

pm me please

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really high idle SOLVED

really high idle SOLVED