Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Technical Forums > DIY / Maintenance / Service
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 11-03-2009, 08:08 PM   #1
cpnnz
I've made a post!
 
Drives: 2002 Toyota Vitz
Join Date: Nov 2009
Location: New Zealand
Posts: 1
Cold Idle Speed Question...

Hi. This is my first post. I'm in Christchurch New Zealand.
My 2002 Vitz ( which is a Japanese model Yaris ) seems to have a very high cold idle speed, which takes a while to come down to a 'normal' idle speed.
Driving when cold, the car seems to want to accelerate even when the gas pedal is not being used. And car is in gear ( it's a 1.3L manual trans )
Once warmed up, the idle speed seems normal, and drives normally.
It takes a few minutes for coolant temp light to go off.
Is there any adjustment for this cold idle speed? that won't affect the normal idling speed when warm?
Thanks very much for any assistance : )
Chris
cpnnz is offline   Reply With Quote
Old 11-03-2009, 08:45 PM   #2
Yaris Hilton
Half a Bubble Off Plumb
 
Yaris Hilton's Avatar
 
Drives: 2009 Yaris Sedan
Join Date: Mar 2009
Location: Bristol, Tennessee, USA
Posts: 1,593
Smile

I'd think it's programmed into the ECU.
Yaris Hilton is offline   Reply With Quote
Old 11-03-2009, 09:00 PM   #3
kustom play
pink wheels are cool
 
kustom play's Avatar
 
Drives: 07 liftback
Join Date: Oct 2008
Location: Phoenix
Posts: 1,407
cold start injector issue?
__________________


http://www.4055design.com
kustom play is offline   Reply With Quote
Old 11-03-2009, 09:02 PM   #4
1NZYaris1
 
1NZYaris1's Avatar
 
Drives: Yaris
Join Date: Oct 2008
Location: New Zealand
Posts: 2,566
Hi Chris
where abouts in Christchurch are you
i might be able to help you out , but i am in Auckland for another
2 weeks .
Oh and i live in Rolleston , normally, lol
1NZYaris1 is offline   Reply With Quote
Old 11-03-2009, 09:05 PM   #5
Morgan
 
Morgan's Avatar
 
Drives: 07 MM LB
Join Date: Oct 2008
Location: PCB, FL
Posts: 504
Having owned several later model Toyotas, they all pretty much come standard with the 'cold/high rev' setting when the coolant temp is below a specified point. During the summer, my "cool" light never comes on, but since the temperature is getting colder here lately, it will stay on for several minutes. The higher revs and lower gear (for automatics) will get the car up to operating temperature faster.

You may want to try a different weight oil, if you use 5w30, you may want to try 0w40. The oil numbers are the oil's viscosity ranges - the later number is basically how viscous the oil is when warm, the initial number is the oil when cool.

The idling problem may be due to the engines preprogrammed set up to get the engine up to temperature quicker, but if its noticeable enough to want to move the car - you may want to take it to the dealer and have them check your idle setting. Has this been a recent problem or has the engine always behaved this way (under the same conditions - ambient temp/only on start up)?
__________________

Last edited by Morgan; 11-03-2009 at 09:28 PM. Reason: corrected!
Morgan is offline   Reply With Quote
Old 11-03-2009, 09:15 PM   #6
Lafiro
 
Drives: 06 Yaris Sedan
Join Date: Jun 2006
Location: NYC
Posts: 694
Send a message via AIM to Lafiro
And here I thought in the cold it was better to use a lower number: 5w20, instead of 5w30..... ????????????????????
Lafiro is offline   Reply With Quote
Old 11-03-2009, 09:21 PM   #7
Morgan
 
Morgan's Avatar
 
Drives: 07 MM LB
Join Date: Oct 2008
Location: PCB, FL
Posts: 504
Ok:



so yes, I had it backwards originally - sorry!
__________________
Morgan is offline   Reply With Quote
Old 11-04-2009, 03:01 AM   #8
yaris-me
Learn to Relax
 
Drives: 2007, Meteorite, LB
Join Date: Dec 2008
Location: Anaheim, CA
Posts: 2,070
Is the high cold idle speed recent or has it always been that way? If it is recent then there are some issues. When was the last tune up, etc...?
yaris-me is offline   Reply With Quote
Old 11-04-2009, 04:58 PM   #9
rob323
Don't drive it, RALLY it!
 
Drives: 1999 echo PRC rally car
Join Date: Oct 2008
Location: Joyner, Brisbane
Posts: 321
Sounds pretty typical for an Echo/ Vitz.
rob323 is offline   Reply With Quote
Old 11-04-2009, 05:31 PM   #10
TheSilkySmooth
 
TheSilkySmooth's Avatar
 
Drives: 08 3DR 5M Bayou Blue; 09 Fos
Join Date: Oct 2008
Location: New Hampshire
Posts: 622
Quote:
Originally Posted by Lafiro View Post
And here I thought in the cold it was better to use a lower number: 5w20, instead of 5w30..... ????????????????????
This is a thermostat controlled, water cooled engine - you dont change the second viscosity # (oil grade or weight) for winter use unless its extremely severe - like sustained 10F below zero and a short tripper. The first number really means NOTHING** other than the lower the # the bettter the extreme cold flow properties. Motor oil is ALWAYS MUCH THICKER when cold than at 200F. It would be actually better to use a 10w-30 and have a block heater than go to a 5w or 0w. Remember the piston clearance is large when cold and the oil has to be of sufficient viscosity to prevent galling and slap during that critical 5 min warm up drive. It also has to be thin enough to pump and flow. A HD diesel oil like Rotella T 10w-30 has a -40C/F pour point and is easily good for cold starting at 10 above F. A truely remarkable dino oil that has almost universal application from Motorbike to diesel tractor to Yaris to 350HP 327 Chevy II to 3HP Briggs Lawnmower.


** 5W means Winter and may exhibit oil flow similar to how a SAE-5 grade oil would flow if chilled at ~ 0deg C. This will be much thicker than a hot SAE 30wt but substantially thinner than a chilled SAE 30wt. You could call a modern single grade SAE 20 oil a 10W-20 because it would most likely demonstrate 10W cold flow - or better, due to the improved oil refining process compared to that 15 years ago. And GASP! most ALL USA sold synthetics are just refined, conventional paraffin oil. Big oil loves taking your monies and stickin it to ya.

Last edited by TheSilkySmooth; 11-05-2009 at 09:56 AM. Reason: wt not W / sp
TheSilkySmooth is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Have an Cold Air Intake question... TitaniumBarbell Performance Modifications 10 06-02-2009 04:24 PM
what is the idle speed on stock 09 HB ezhacker1 General Yaris / Vitz Discussion 5 05-17-2009 08:49 AM
Intake Systems Decision Maker.. Blenjar Performance Modifications 25 09-15-2007 10:07 PM
Help with low idle from Venezuela Yarisvene DIY / Maintenance / Service 5 06-23-2007 08:23 AM
Low idle speed gonzo452001 DIY / Maintenance / Service 9 02-21-2007 08:41 PM


All times are GMT -4. The time now is 01:24 PM.




YarisWorld
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.