Replacing the Engine Temperature Sensor
Advanced
Joined: May 2018
Posts: 647
Likes: 258
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.
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.
Intermediate
Joined: Nov 2013
Posts: 310
Likes: 35
From: Minnesota
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.
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.
Advanced
Joined: May 2018
Posts: 647
Likes: 258
From: Ct
Intermediate
Joined: Nov 2013
Posts: 310
Likes: 35
From: Minnesota
Advanced
Joined: Dec 2017
Posts: 716
Likes: 168
From: FL
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).
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Driver School Candidate
Joined: May 2021
Posts: 1
Likes: 0
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
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
Pit Crew
Joined: Feb 2019
Posts: 204
Likes: 96
From: Scotland
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.
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.
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