Replacing the Engine Temperature Sensor

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Apr 20, 2019 | 05:19 PM

#46

Peacebay

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Joined: May 2018

Posts: 647

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From: Ct

Thing is, the coolant temp sensor will never really fail, in a tangible sense. So a lifetime warranty is really useless.

A well functioning, quality sensor will send the most accurate data to your ECM, keeping your fuel trims optimal.

I spent $35 bucks on my OEM Lexus sensor. Cheap insurance.

Apr 20, 2019 | 05:24 PM

#47

westopill

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Joined: Nov 2013

Posts: 310

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From: Minnesota

Quote:

Originally Posted by Peacebay

Where did you find it for $35?? I looked around and even Mylparts sells it for at least $60. If I could get it for that price I'll just return the one I got..

Apr 20, 2019 | 05:36 PM

#48

Peacebay

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From: Ct

Quote:

Originally Posted by westopill

Where did you find it for $35?? I looked around and even Mylparts sells it for at least $60. If I could get it for that price I'll just return the one I got..

eBay is your friend

Apr 20, 2019 | 07:03 PM

#49

westopill

Intermediate

Joined: Nov 2013

Posts: 310

Likes: 35

From: Minnesota

Quote:

Originally Posted by Peacebay

eBay is your friend

Hah, I wouldn't have thought eBay for my OEM parts. Seems a little sketchy but the seller seems reputable. I'll hop on this when I get the chance, and in the mean time I'll run with the Oreilly brand and see if my MPG improves.

Apr 20, 2019 | 10:55 PM

#50

ls430w140

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Joined: Dec 2017

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From: FL

Quote:

Originally Posted by westopill

Amayama has good deals for oem coolant sensor last starting from 31 dollars plus small delivery fee, in case if you don’t trust eBay (which I understand as I am in the same position sometimes).

Apr 28, 2019 | 12:32 PM

#51

Nphoops

Driver

Joined: Apr 2014

Posts: 64

Likes: 24

From: WI

I changed out the sensor yesterday. Engine cold, no coolant spilled out. Bought a sensor at Advance Auto (25% off). The replacement came with thread tape! Very easy replacement, took 15 minutes.

Aug 9, 2019 | 12:16 AM

#52

bd3471

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Joined: Jan 2019

Posts: 26

Likes: 10

From: TX

Any update on MPG? I get 21 MPG max on HWY but envious of those who report 27.

Aug 10, 2019 | 06:39 AM

#53

Bigno366

Driver School Candidate

Joined: Aug 2019

Posts: 1

Likes: 0

From: Texas

Sensor

Hey can anyone help my LS430 it seems to try to run hot when the AC is on but soon as I turn it off after a few minutes temperature drop to normal what could it be

May 1, 2021 | 08:05 AM

#54

Notyoujohn

Driver School Candidate

Joined: May 2021

Posts: 1

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From: Notyoujohn

Qstn

My lexus 3uz engine its not recording temperature bt i have seen some cables cut on the cluster connector so im thinking that where there problem is. So i got 2 questions here
1. What is the cable colour for temperature gauge ?
2 . From the temperature sensor does it goes through the engine control box (computerbox)?
please help

Feb 14, 2022 | 08:56 AM

#55

ThomasD94

Pit Crew

Joined: Feb 2019

Posts: 204

Likes: 95

From: Scotland

Quote:

Originally Posted by Lavrishevo

I put in my new engine temperature sensor today. It was actually very easy. Just remove the air tube between the air filter and the throttle body and you have easy access. A 19mm deep well socket will easily remove it. Also gave the throttle body a little cleaning and the little idle port on top as well. I did not know about the port until DockOf-Bay mentioned it. Between cleaning the idle port and replacing the sensor she is really running great. A lot accomplished today.

A few pics of the process and the old sensor. In my opinion, antifreeze really does a number on the sensor and it should be replaced at the 90K service.

Thank you so much for this!