Toyota Yaris Forums - Ultimate Yaris Enthusiast Site
 

 


 
Go Back   Toyota Yaris Forums - Ultimate Yaris Enthusiast Site > Technical Forums > Performance Modifications
  The Tire Rack

Reply
 
Thread Tools Display Modes
Old 12-16-2022, 07:22 PM   #1
Compeer
 
Drives: NCP90 TRD Yaris Manual
Join Date: Oct 2022
Location: Auckland, NZ
Posts: 272
Quote:
Originally Posted by Rattlesnake View Post
Thanks pal, tried all these and still the same :(
" Quite common problem - unstable or too low idle speed, sometimes supplemented by power loss at medium speed. There are not definite cause and universal solution, but these engines like cleanness - washing of the throttle body, ISCV, MAF-sensor, PCV valve may have an effect. However, the owners overly fixated on the washing, forgetting that sometimes ISCV, MAF, ignition coil or VVT actuator just have to be changed."

from the engine manual. So next is to clean idle control valve, and throttle body if you didnt do that one already.

After that im afraid you need a friend with the same cay to try swap parts to see which fixes it...Or a really cool scrappy who will let you do that and then buy the parts you need.

If you can find a crashed one, buy them one at a time, have the guy mark them so you can rerturn it if it doesnt help. they are easy to install so could do it at the wreckers shop. Problem is it could be any of those things listed. So you cant tell till you swap them out one at a time ansd see which fixes it.

Start with the chepest on the list and work your way forward. Also the coils can be tested and you can probably look up what they should be at to see if they are weak, would be strange tho that all four are weak.
Compeer is offline   Reply With Quote
Reply


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


All times are GMT -4. The time now is 01:45 PM.




YarisWorld
Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2025, vBulletin Solutions Inc.