1DayIllBFast

Ok so when i start my car up it sounds fine like it is just cold at like 1700 then goes up to about 2500 and never goes down. When im driving and in between shifts or if its nuetral it goes to 2500 but when i come to a stop it goes down to like 1500. So my question is? what the heck is it? why would it idle super high when moving and only go down when im stopped or at a 3mph roll.

94doorgsr

ha

chads

Billy Idol?


wrong forum

1DayIllBFast

yeah it sucks going over like speed bumps or rolling to a stop light people prob think im just holding down the gas a little bit ha. but there isnt any vaccum leaks car pulls super hard

x4thGenCafe

wtf ??

itotech

lol....WRONG PLACE.Unless your post is followed by a few nice pics of your car....Repost it in the correct forum

White Fox

bad Idle Control Valve or the idle screw needs to be adjusted....?

APPEARANCE/COSMETIC = tech/engine question??

......

1DayIllBFast

my IACV i think is good. When you unplug it the RPM's go way down to 800 like it should and teh screen is clean. and the adjustment screw is good too and plus that wouldnt have anything to do with my high idle while moving problem.

809JDM

My friend was having a similar problem and when I checked it for him I came to find out his throttle was staying open. Check to make sure it's not staying stuck open

GSaura

Yep. Sounds like a sticking throttle to me, too. You can stick your toe under the accelerator pedal and pull it up to fix the problem when it happens if it's barely sticking. That's how it was with mine anyway for some reason.

1DayIllBFast

i have tried to pull the pedal up and it doesnt move. But if it was a sticking throttle then why would the idle go down once i come to a stop. does that make any sense?

GSaura

How do you know there aren't any vacuum leaks? There's no way the car knows when it's moving, so the idle issue would have to be related to brake engagement. The only thing that I can think of that would cause any idle change would be a bad brake booster. Take off the intake hose, clean the butterfly, and check to make sure the throttle isn't sticking before you do anything else.

1DayIllBFast

but it doesnt go down when im braking it goes down when im stopped so it cant be that. and we compression tested the motor once we put it in and checked and cleaned the IACV so im lost. Im going to check the FITV today to see.

daniel molano

did you already adjust the idle screw?

1DayIllBFast

yes i adjusted it all the way to the right and messed with that but nothing

1DayIllBFast

bump for ideas

flatblacksleeper

do you have an aftermarked tps?

1DayIllBFast

well its def. not my FITV because i dotn have one and no i dont have an aftermarket TPS that i know of anyway. i dont get a CEL for my tps though but if it was bad would it throw a code

MonkeyMagic

i know the feeling... keep reading my post

no its definately not a sticking throttle.

1dayillbfast, go back and set up your idle manually.

1)unhook iacv
2)jump service connector by the ecu
3)make sure the car is warmed up....
4)adjust throttle plate to ~700rpm
5)check TPS output voltage... should be less than .6 volts
(mine personally ONLY works right between .566 and .59volts, anything else and i either get no idle or a delayed pedal)
6)hook the tps back up
7)drive it around a bit and see if **** gets back to normal.

if this doesn't work, we'll start figuring out whats broken

1DayIllBFast

Thanks bro i will try all that this afternoon after work. thanks for the detailed reply. I pray this works

MonkeyMagic

good luck, let us know how it turns out.

if that doesn't fix it we'll get to some other stuff. but hopefully that fixes it

MonkeyMagic

missed this post earlier... your IACV may be shitty

1DayIllBFast

IACV is supposed to go down when you unplug it right? also i dont get a cel for it so i dont think its crap. maybe i just dont want it to be because its like 150 bucks or so i think for a new one

ELOYD

i have a check engine light it say evap purge flow. i have 96 ek with a 98 gsr any sugguetion

1DayIllBFast

trying to steal my thread ha j/k but yeah you prob dont have your evap system hooked up right for your ecu to read it or there is a malfunction in it.