Previous Thread
Next Thread
New Reply
Print Thread
Joined: Dec 2013
Posts: 3
Farrell
New Member
Farrell
New Member

Joined: Dec 2013
Posts: 3
CA, USA
Dec 13, 9:09pm - #449756 
2005 Celica GT, intermittent idle problems

Hello,

I have a 2005 GT, automatic, all stock, with 130K miles on it. It will intermittently have idle problems where it will idle too low (400 - 500 RPM) but then realize the problem and bring the idle back up to 900 RPM. Then it lets it fall back down after a second or two. It will sometimes repeat this slowing down/speeding up once every few seconds. Unfortunately it is intermittent, occurring maybe 2 - 3 times a month. It seems to happen just after I fill up my gas tank, but also happens at other random times. This problem only occurs at idle, and only when the engine is warm. Engine is smooth at any speed other than idle.

Since this happens more often after refueling, I thought the gas cap was the problem. I replaced it with a new one from Toyota. I also cleaned my MAF sensor, even though it looked brand new. I pulled off my Intake, and the throttle body looked brand new too -- not even the slightest film of dust or dirt. I didn't proceed with cleaning the IAC valve. Should I? Anything else I should check or try?

Perhaps unrelated, when starting the engine in the morning, or after letting the engine cool down to ambient, the idle seems high. It will initially rev to about 2200 RPM, then back down to 1800 RPM after a few seconds. If I let it sit it will slowly rise or fall maybe 300 RPM every ten seconds, until the temp gauge gets to that first angle. Then it gradually lowers the idle as it warms up. I'm in Southern California, so "cold" is only 50F ... not like I'm in the snow. Is this normal? If I recall correctly, my cold engine would idle at a constant 1300 RPM when the car was new. It just slowly got worse over the years.

My car always passes smog tests, and the check engine light has never come on, if that makes any difference.

Thanks,

-Farrell

Joined: May 2002
Posts: 464
CaffeineKid
CelicaSpecialist
CaffeineKid

CelicaSpecialist
2008 Scion tC

Joined: May 2002
Posts: 464
California
Dec 13, 9:28pm - #449757 
iirc, this is normal for the 2000+ celica. it revs higher during idle from a cold start, to warm itself up. And after a while of driving, when the engine is already hot and the air temp is also hot, the engine idles around or below 1k.

Join the conversation - Register Now or Log In to add your comment


Moderated by  isaac 

Member Spotlight
Proffitt
Proffitt
2002 Toyota Celica
CALIFORNIA CITY, CA

Posts: 130
Joined: December 2002
Thanks: Thanks to everybody on ECelica.
Show All Member Profiles 
Recent Topics
Head light problems
by Dtorres13. 08/19/2017 2:57 PM
Cargo Cover 2000 GT?
by Rosay559. 08/17/2017 8:46 PM
WTB: GTS Brake assembly, seats
by Edwyn. 08/17/2017 5:56 AM
BRS Fender Flares ?? are they still around ??
by djTOY2000. 08/16/2017 3:35 PM
93 GT what's broken now? Let's find out!
by 719GOD. 08/15/2017 1:40 AM
New Member, '01 GT-S
by GoldMan27. 08/14/2017 4:56 PM
WTB: Authentic TRD full body kit?
by Midori. 08/13/2017 3:52 AM
New here, need help with tire size
by Lizzypop. 08/11/2017 6:49 AM
Customize Your Toyota Celica Privacy Policy · About · Contact
Privacy Policy · About · Contact
CelicaHobby.com is an independent Toyota Celica enthusiast website. CelicaHobby.com is not sponsored by or affiliated with Toyota Motor Sales, USA, Inc. in any way. The Toyota and Celica names and logos are trademarks owned by Toyota Motor Sales, USA, Inc.
© CelicaHobby.com, 2001-2017
Powered by UBB.threads™ PHP Forum Software 7.6.1
(Snapshot build 20170611)