Overheating Issue - Toyota Yaris Forums

Bluevitz-rs · 10-17-2011, 01:43 PM

^The thermostat wouldn't affect the heater, the heater bypasses it.

Have a look on the underside of your hood for a pinkish spray line directly above the belts. If there is one, your water pump is shot and you're loosing the coolant through that. For now, top it up and monitor the level. Make sure you top up the rad AND the overflow container to the MAX level. If the coolant is low enough you'll need to idle the motor from cold and top it up.

DO NOT open the rad when it's hot. You can be scolded with hot steam or coolant.

Klink10 · 10-17-2011, 07:43 PM

Quote:

Originally Posted by Bluevitz-rs

^The thermostat wouldn't affect the heater, the heater bypasses it.

Have a look on the underside of your hood for a pinkish spray line directly above the belts. If there is one, your water pump is shot and you're loosing the coolant through that. For now, top it up and monitor the level. Make sure you top up the rad AND the overflow container to the MAX level. If the coolant is low enough you'll need to idle the motor from cold and top it up.

DO NOT open the rad when it's hot. You can be scolded with hot steam or coolant.

Yea but a stuck closed thermostat would have issue with running a bit hot. It was just a thought on my part.

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10-17-2011, 01:43 PM	#1
Bluevitz-rs 1NZ-6spd View User's Garage Drives: '05 6-Spd Vitz RS Join Date: Oct 2008 Location: Oshawa, Ontario, Canada Posts: 2,967	^The thermostat wouldn't affect the heater, the heater bypasses it. Have a look on the underside of your hood for a pinkish spray line directly above the belts. If there is one, your water pump is shot and you're loosing the coolant through that. For now, top it up and monitor the level. Make sure you top up the rad AND the overflow container to the MAX level. If the coolant is low enough you'll need to idle the motor from cold and top it up. DO NOT open the rad when it's hot. You can be scolded with hot steam or coolant.