thermostat replacement - Toyota Yaris Forums

Klink10 · 01-09-2011, 11:52 AM

Follow bottom radiator hose to block. It attaches to a plastic fixture behind which is the thermostat. You don't have to remove any hoses, just unbolt the fixture with hose attached and pull off, thermostat rests in the opening. Carefully remove to save the o-ring. I went with OEM replacement. You will have to drain radiator. Make sure you put the new one in the same way as the jiggle valve has to be in the 12 o-clock position.

auxmike · 01-09-2011, 01:24 PM

New O ring comes in the box if you go OEM.
I did this job, it was easy. Just don't tighten too much or you can crack the plastic cover. Use a torque wrench...

bankrobber · 01-09-2011, 10:58 PM

Quote:

Originally Posted by Klink10

Follow bottom radiator hose to block. It attaches to a plastic fixture behind which is the thermostat. You don't have to remove any hoses, just unbolt the fixture with hose attached and pull off, thermostat rests in the opening. Carefully remove to save the o-ring. I went with OEM replacement. You will have to drain radiator. Make sure you put the new one in the same way as the jiggle valve has to be in the 12 o-clock position.

Thanks, I was thinking it was there. I got a good look today as I was putting in new spark plugs.

How often should it be replaced. I am thinking with a fail safe thermostat it can go much longer as no danger of becoming stuck closed.

When I refill radiator can I just use Prestone or Peak brand Anti freeze?

01-09-2011, 01:24 PM	#2
auxmike Drives: 2008 HB, A/T, Power W/L/M Join Date: Oct 2008 Location: LI, New Yawk Posts: 2,063	New O ring comes in the box if you go OEM. I did this job, it was easy. Just don't tighten too much or you can crack the plastic cover. Use a torque wrench... __________________ Never take eyes off opponent - Bruce Lee

Thread Tools
Show Printable Version Email this Page
Display Modes
Switch to Linear Mode Hybrid Mode Switch to Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
clutch replacement	vwtech	General Yaris / Vitz Discussion	44	06-23-2017 02:06 PM
PCV Valve Replacement	devinlamothe	DIY / Maintenance / Service	27	03-17-2013 12:06 AM
Single Tire Replacement - Using Pressure Sensor?	1stOne	Wheels, Tires and Suspension Forum sponsored by The Tire Rack	3	09-13-2010 11:25 AM
Parking Light replacement	Doug007	DIY / Maintenance / Service	1	11-06-2008 07:28 PM
TRD Thermostat	Jerkratt	Performance Modifications	9	07-25-2007 10:39 PM

01-09-2011, 11:52 AM	#1
Klink10 View User's Garage Drives: 2007 Yaris Liftback Join Date: Sep 2007 Location: 910 Posts: 1,229	Follow bottom radiator hose to block. It attaches to a plastic fixture behind which is the thermostat. You don't have to remove any hoses, just unbolt the fixture with hose attached and pull off, thermostat rests in the opening. Carefully remove to save the o-ring. I went with OEM replacement. You will have to drain radiator. Make sure you put the new one in the same way as the jiggle valve has to be in the 12 o-clock position.