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Joined: Sep 2003
Posts: 160
trdhondakiller
Member
trdhondakiller Nov 11, 7:08am - #323594 
01 Liquid Silver Toyota Celica
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01 Toyota Celica

Joined: Sep 2003
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.
Joined: Sep 2003
Posts: 753
blackcel
Senior Member
blackcel Nov 11, 7:17am - #323595 

Senior Member
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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Joined: Aug 2003
Posts: 4,278
Virgilson
TheFilipinoCrew
Virgilson Nov 11, 7:37am - #323596 

TheFilipinoCrew
2000 Toyota Celica GT

Joined: Aug 2003
Posts: 4,278
Pomona, CA
yups clean the MAFS
Joined: Jan 2004
Posts: 744
Blue_Bomber
Senior Member
Blue_Bomber Nov 11, 7:37am - #323597 
2000 Spectra Blue Mica Toyota Celica
Senior Member
2000 Toyota Celica

Joined: Jan 2004
Posts: 744
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.
Joined: Jun 2004
Posts: 1,337
celicadragon
Specialist
celicadragon Nov 11, 4:36pm - #323598 

Specialist
2002 Toyota Celica

Joined: Jun 2004
Posts: 1,337
Pittsburgh, PA
if thats not it i had to change plugs once and that worked

respect the gt-s
Joined: Sep 2003
Posts: 160
trdhondakiller
Member
trdhondakiller Nov 11, 6:27pm - #323599 
01 Liquid Silver Toyota Celica
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01 Toyota Celica

Joined: Sep 2003
Posts: 160
Thanks a ton. I"m almost done changing motors.
Joined: Nov 2004
Posts: 113
risa
Member
risa Nov 11, 7:14pm - #323600 

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2002 Toyota Celica

Joined: Nov 2004
Posts: 113
VA
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.
Joined: May 2004
Posts: 300
Miketrd
Member
Miketrd Nov 12, 2:06am - #323601 
2003 Silver Toyota Celica GT
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2003 Toyota Celica GT

Joined: May 2004
Posts: 300
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??
Joined: Sep 2003
Posts: 160
trdhondakiller
Member
trdhondakiller Nov 12, 2:17am - #323602 
01 Liquid Silver Toyota Celica
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01 Toyota Celica

Joined: Sep 2003
Posts: 160
i'll take a pic and someone can tell me if it's the right thing.
Joined: Sep 2003
Posts: 160
trdhondakiller
Member
trdhondakiller Nov 12, 2:17am - #323603 
01 Liquid Silver Toyota Celica
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01 Toyota Celica

Joined: Sep 2003
Posts: 160
ok maybe I won't. my camera is in jeep and jeep is out of town w/ wife.
Joined: May 2004
Posts: 2,979
RookieGTS
Boobie Vision
RookieGTS Nov 12, 2:28am - #323604 

Boobie Vision
2000 Toyota Celica

Joined: May 2004
Posts: 2,979
925 Nor Cal
yeah clean throttle body too..
Joined: Jan 2004
Posts: 744
Blue_Bomber
Senior Member
Blue_Bomber Nov 12, 8:29pm - #323605 
2000 Spectra Blue Mica Toyota Celica
Senior Member
2000 Toyota Celica

Joined: Jan 2004
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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