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Old 02-06-18, 10:07 AM
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hazmatkid8
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2003 lexus es 300 thermostat location
Old 02-06-18, 10:40 AM
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seanddd
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Driver side of the engine. Need to remove air filter box, throttle body and battery. Get 1-gal SLL 50/50 mix ready.

Originally Posted by hazmatkid8
2003 lexus es 300 thermostat location
Old 02-06-18, 11:28 AM
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LeX2K
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Old 02-06-18, 12:28 PM
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hazmatkid8
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So its take air cleaner assembly an battery out the 12 mm but an 3 10mm but on the housing swap out with dot facing up refill an resemble and good to go
Old 02-07-18, 07:14 PM
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speedkar9
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Thanks for posting my video, hope it helped.
Old 02-08-18, 07:50 AM
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hazmatkid8
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is it a hard replacement just take the battery aircleaner assembly out and it the 3 bolts like in the video bout an hour or 90 min worth of work
Old 02-08-18, 01:22 PM
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HomerJay
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You have an excellent DIY video explaining in detail the procedure. Overall not difficult, but only you know if you have the skill level to move forward.
Old 02-08-18, 01:25 PM
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hazmatkid8
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I've done full suspension replacement on brand new cars rebuilt motors aint much I cant do I know it says 90 min in the book but doesn't look like 90 min
Old 02-08-18, 01:27 PM
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I put a blower an full face suspension on a 2015 ss Camaro brand new less than 60 miles with hand tools and a floor jack
Old 02-08-18, 02:04 PM
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crwys
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Lol oh boy. If you have done all this other work you shouldn't have to ask for help on something as simple as a thermostat location.
Old 02-10-18, 01:04 AM
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artbuc
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Originally Posted by crwys
Lol oh boy. If you have done all this other work you shouldn't have to ask for help on something as simple as a thermostat location.
Was thinking the same. Like asking where the engine is located because he wants to install a new timing belt, a job he has done many times before.
Old 04-07-18, 11:27 AM
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Trying to get this job done this weekend. Ran into trouble, need help. Metal pipe that connects lower radiator hose to thermostat housing. I can't get it to lock into the housing end. There is a lip to it that I assume needs some force to pop into place. But no matter how hard to work it I can't get it to lock in. Am I missing something? Try harder? Thanks
Old 04-07-18, 03:41 PM
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TJEDunn
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HAha.... that pipe has rubber o-ring that fell under car. Got everything together. Not a complicated diy but time consuming and a pain due to location of stat housing.

weird think is that the engine temp is still not getting up to normal. I noticed my 2003 es300 was generally running under normal temp. Then I got a p0128 code. Assumed it was stat and replaced. If code return I guess I'll have to look at the sensor. ����*♂️
Old 04-09-18, 06:34 AM
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Update: after driving to work today looks like I'm all good. Vehicle wasn't warming up sitting in the driveway, but a ten minute drive got it to normal temp and stayed there. I think (but not sure) part of the reason it wasn't warming up at first is that the computer was resetting the idle. Anyway. If u do this job take a drive for a while before judging the results.
Old 04-09-18, 08:26 AM
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HomerJay
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Glad you figured it out. To avoid leaks it's best to replace the o-ring, hopefully it will not be a problem reusing the old one.


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