infosponge

Hi there, I have a 00 gs300 black on black. A few weeks ago i noticed my radiator was seeping fluid so i replaced it with a denso unit And topped off my coolant (red) but now the car will only heat up if I'm idling, i can drive 80mph for 30 minutes and the car doesn't heat up to operating temp. I believe the thermostat might be the cause. This leads me to the question of where is the thermostat located? Off the water pump or up top where the upper radiator hose goes into motor?


Thanks Josh

tmf2004

iTrader: (15)

it would be where the upper radiator hose goes into the neck held by 2 10mm bolts..

infosponge

How do you remove that neck then? I saw two 12 mm nuts and 1 12mm bolt, i can add pics when i get home. A pic would be helpful tho

tmf2004

iTrader: (15)

you probably need to pry if off since its held on by strong gasket sealer...

burny

part # 16331A in the pic

http://lexus.sewellparts.com/oem-cat...S300-2000.html

infosponge

Well i grabbed it and moved it hard enough to shake the car but it didn't budge. just to confirm that is the correct location for the thermostat right?

LexiBlue

iTrader: (2)

actually the thermostat is located behind the alternator in water pump housing connected to the lower radiator hose.

infosponge

Thank you i had taken a pic of that area to post and ask but you've confirmed It. Are there any abnormal steps to draining refilling and replacing thermostat?

infosponge

2000 gs300 thermostat location




Here's a pic incase someone else has this question.
Also a pic of the ride


Got the new thermostat in today problem solved the old one had a broken internal gasket.