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idle is going up and down #323594 Nov 11, 12:08am Nov 11, 12:08am
Joined: Sep 2003
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01 Liquid Silver Toyota Celica
trdhondakiller OP
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01 Toyota Celica

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Posts: 160
idle is going up and down
when @ idle my car goes between like 500rpm and like 1200rpm just going up and down up and down. wtf is going on here? that happen to anyone here on their celi.

Re: idle is going up and down [Re: trdhondakiller] #323595 Nov 11, 12:17am Nov 11, 12:17am
Joined: Sep 2003
Posts: 753
Southeastern, Illinois
blackcel
Senior Member
2000 Toyota Celica GT
blackcel
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2000 Toyota Celica GT

Joined: Sep 2003
Posts: 753
Southeastern, Illinois
MAF sensor. It is the sensor on your Intake. Mine did it, and many others did it when they got dirty. Just take that sensor off and give it a good cleaning, and you will be ready to go.


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Re: idle is going up and down [Re: blackcel] #323596 Nov 11, 12:37am Nov 11, 12:37am
Joined: Aug 2003
Posts: 4,278
Pomona, CA
Virgilson
TheFilipinoCrew
2000 Toyota Celica GT
Virgilson
TheFilipinoCrew
2000 Toyota Celica GT

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Posts: 4,278
Pomona, CA
yups clean the MAFS

Re: idle is going up and down [Re: blackcel] #323597 Nov 11, 12:37am Nov 11, 12:37am
Joined: Jan 2004
Posts: 744
Freehold, NJ
2000 Spectra Blue Mica Toyota Celica
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Freehold, NJ
Clean your IAC (Idle Air Control) valve. It's a little square inlet inside your throttle body, facing towards the front. It gets clogged by oil and gas vapors from the PCV system, and gets stuck every now and then, causing an irratic idle.

Re: idle is going up and down [Re: Blue_Bomber] #323598 Nov 11, 9:36am Nov 11, 9:36am
Joined: Jun 2004
Posts: 1,337
Pittsburgh, PA
celicadragon
Specialist
2002 Toyota Celica
celicadragon
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if thats not it i had to change plugs once and that worked


respect the gt-s
Re: idle is going up and down [Re: celicadragon] #323599 Nov 11, 11:27am Nov 11, 11:27am
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Posts: 160
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trdhondakiller OP
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trdhondakiller OP
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Thanks a ton. I"m almost done changing motors.

Re: idle is going up and down [Re: trdhondakiller] #323600 Nov 11, 12:14pm Nov 11, 12:14pm
Joined: Nov 2004
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risa
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risa
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Yeah thats what i just went through with my GTS. I cleaned the MAF and IAC and still had the problem. The dealer wanted $1100 to replace the IAC but i bought the part myself for $190 and installed it.

Re: idle is going up and down [Re: risa] #323601 Nov 11, 7:06pm Nov 11, 7:06pm
Joined: May 2004
Posts: 300
Puerto Rico
2003 Silver Toyota Celica GT
Miketrd
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2003 Toyota Celica GT
Miketrd
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Puerto Rico
can someone take a picture of the IAC, just to have a better idea of what i will see, also do i used the same stuff that we use to clean the maf, to clean the IAC??

Re: idle is going up and down [Re: Miketrd] #323602 Nov 11, 7:17pm Nov 11, 7:17pm
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trdhondakiller OP
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i'll take a pic and someone can tell me if it's the right thing.

Re: idle is going up and down [Re: trdhondakiller] #323603 Nov 11, 7:17pm Nov 11, 7:17pm
Joined: Sep 2003
Posts: 160
01 Liquid Silver Toyota Celica
trdhondakiller OP
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trdhondakiller OP
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ok maybe I won't. my camera is in jeep and jeep is out of town w/ wife.

Re: idle is going up and down [Re: trdhondakiller] #323604 Nov 11, 7:28pm Nov 11, 7:28pm
Joined: May 2004
Posts: 2,979
925 Nor Cal
RookieGTS
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RookieGTS
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925 Nor Cal
yeah clean throttle body too..

Re: idle is going up and down [Re: risa] #323605 Nov 12, 1:29pm Nov 12, 1:29pm
Joined: Jan 2004
Posts: 744
Freehold, NJ
2000 Spectra Blue Mica Toyota Celica
Blue_Bomber
Senior Member
2000 Toyota Celica
Blue_Bomber
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2000 Toyota Celica

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Posts: 744
Freehold, NJ
Originally Posted by risa
The dealer wanted $1100 to replace the IAC

eek eek eek eek eek eek eek eek eek eek eek eek eek eek eek eek eek eek

WTF are they smoking?

Originally Posted by Miketrd
can someone take a picture of the IAC, just to have a better idea of what i will see, also do i used the same stuff that we use to clean the maf, to clean the IAC??

The actual IAC housing is bolted to the bottom of the throttle body. The inlet to it is inside the throttle body, on the bottom half facing the front, right before the throttle plate. It's a square shaped hole. Just spray a ton of throttle body cleaner into it and let it sit for a few min, then start up the car and let it idle for a while to flush out all the gunk.

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