Question about 2005 Toyota Yaris 1.3

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Engine temp light blue flashing on and off while driving

My engine temp dashboard light comes on blue as normal when car starts and then goes off as per normal once running for a few minutes, but has now started to turn on and off for intermittent periods when driving. Engine definately warm as hot air can be blown through heaters. Any ideas?

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 54 Answers

SOURCE: Intermitant temperature

Check to make sure your thermostat works right by monitoring the warming up of your engine. With a completely cold engine, start and run the engine for a few minutes, then put your hand on the top radiator hose to monitor if and when it gets warm as the thermostat opens more and more and note the gauge reading( if it works) the top radiator hose should be unbearably hot within 5-8 minutes. If the therm. opens right it should close right aswell, staying open a little while eventhough the radiator may have cooled may be what you are experiencing causing the rapid cooling and is nothing to worry about. The Hose should not get warm very soon after starting the engine. Regarding you gauge, lets take one step at a time, verify proper op. or the therm.

Posted on Jan 20, 2009

blueextc3221
  • 15935 Answers

SOURCE: 1993 V6 camry engine over heats and check engine light comes on

The thermostat housing is located by grabbing the upper radiator hose, and following it back to the engine block.
The housing that the hose is connected to is the thermostat housing.
Changing the thermostat will fix your problem!

Thanks for using FixYa - a FixYa rating is appreciated!!

Posted on Jan 31, 2009

  • 73 Answers

SOURCE: 1994 Toyota Corolla hard to start when warm

does it have a cold start injector seperate from the other injectors usually on the upper intake somewhere with a fuel line going to it

Posted on Apr 15, 2009

  • 1 Answer

SOURCE: 1996 Toyota Tacoma wont start when the engine is hot and sits a few minutes

I Hope You All Appreciate This FAST and EASY Inexpensive Repair That Even The Toyota Dealers Dont Seem To Know How To Fix !!! The Problem Is The Air filter temp sensor. Look On The Left Side Of the Air Filter Housing and Disconnect The Plug Thats Attached To The Spark Plug Like Plastic Sensor Mounted on The Side Of the Air Filter Housing, Now Go Start Your Truck !!! Your Truck Will Start And RUN Fine Now ! Replace The Sensor Approx $59 at Autozone... This Should Fix 90% Of Your Problems If your In the other 10% and it does not Fix it , Email Me and Ill See If I Can Help ! People Have Spent Hundreds and into The Thousand Dollar Area Trying to Resolve This Intermittant Problem At Inept Shops with Illiterate Mechanics ! If Your Happy With This Fix, BE Generouse ! I Do Accept Donations at Paypal Send to donsgirl89@yahoo.com Thank You JOE Mechaniac

Posted on May 18, 2009

  • 16 Answers

SOURCE: Check engine light comes on when it gets warm outside.

could be your water temperature sensor

Posted on Jun 01, 2009

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