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Old 05-23-06, 03:47 PM   #1
sbman1990
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Default Location of coolant temp sensor on 90 ls400?

I was told the reason for my front two fans not working cause I need a coolant temperture sensor. I bought one but I cant figure out where it goes.... .Anyone have a diagram of the location?
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Old 05-23-06, 04:48 PM   #2
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Default location of coolant temp sensor 90 ls400

i cant find where it goes! Anyone have a diagram?
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Old 05-23-06, 08:42 PM   #3
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I guessing you’re talking about your thermostat. Its actually a 5min job, so your are in luck.

Here is the location, just have to undue a few screws. Be careful, you will have some coolant coming out, you can catch the coolant, and reuse it again if you wish.

NOTE: I strongly suggest you change the Thermostat's gasket.
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Old 05-24-06, 12:36 PM   #4
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no its not the thermostant! If it was that the car would overheat! The front fans are not coming on which is stopping the air from flowing. it is full of freon. it is called a Coolant temp sensor in back of of intake manifold.
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Old 05-24-06, 02:09 PM   #5
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Quote:
Originally Posted by sbman1990
no its not the thermostant! If it was that the car would overheat! The front fans are not coming on which is stopping the air from flowing. it is full of freon. it is called a Coolant temp sensor in back of of intake manifold.

Oh my bad, sorry then, my intake is VERY different from yours, so I wouldnt know.
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Old 05-24-06, 02:26 PM   #6
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What Year Is Yours? They Look The Same To Me.
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Old 05-24-06, 02:33 PM   #7
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My engine is different from the one pictured above (you can tell that one has a Toyota emblem) I just found that pic online.

But the 98+ have a different intake design all together. Here's a pic of my engine bay:
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Old 05-24-06, 02:44 PM   #8
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O Ok. Hmmmm Do U Know Where I Can Find A Diagram Of The Engine?
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Old 05-25-06, 05:08 PM   #9
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Quote:
Originally Posted by sbman1990
O Ok. Hmmmm Do U Know Where I Can Find A Diagram Of The Engine?

Sorry, i';ve seen them around, just dont remember where.
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Old 05-25-06, 07:19 PM   #10
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sbman....

private message with your e-mail & I will send you a .pdf file for the cooling system components & temperature switch...

Hope that helps

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Old 05-26-06, 06:23 AM   #11
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Coolant temp sensor is located at the aft lower left side (driver side) of the radiator. It has a simple two wire connector on the back. Coolant will flow out when you remove it so just switch it quickly to minimize coolant loss. You will need a new washer, and don't over torque it or you might be looking at a new radiator.
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Old 05-26-06, 03:38 PM   #12
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if you send me an e-mail address, i can send you a diagram.
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