95 sc400 operating temp.

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Dec 29, 2010 | 03:51 PM

skirts

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From: TN

95 sc400 operating temp.

Is this normal operating temp? It's 46 degrees here. It was like this last winter also? Heat isn't that hot but I've been driving my new FJ Cruiser lately and it's heat gets hot fast.

Dec 29, 2010 | 05:28 PM

BenStoked

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From: Okc, OK

no, not normal.
mine does it, too. getting a new thermostat should fix it, though.

Dec 29, 2010 | 10:39 PM

aporozco

Driver

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From: 60614

mine too, my thermostat is out of an LS400 tho.

Dec 29, 2010 | 10:52 PM

ucmysc400

Pole Position

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From: IL

mine was doing the same till a new thermostat.

Dec 30, 2010 | 06:56 AM

skirts

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From: TN

Ok thanks guys just wanted to make sure before I buy a new one. Have you replaced with oem or aftermarket?

Dec 30, 2010 | 08:39 AM

fazy_uk

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Skirts: I went with aftermarket last year and my temp sat constantly below the middle (JDM Soarer V8)

I changed to OEM a couple of weeks ago and it runs much better. My heating system has improved too

Feb 10, 2014 | 10:19 PM

driftlex

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From: florida

so what is normal operating temp then ...where should the temp needle be

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Feb 12, 2014 | 09:53 AM

TaninAuto

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From: WI

If it's not the thermostat, it's common for the gauge needle motors to become sluggish and slow over time and higher mileage.

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Feb 12, 2014 | 10:58 PM

#10

Maeve

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From: California

Also while you are at it, replace your coolant temperature sensor.
it's a 20 minutes job: https://www.clublexus.com/forums/ls4...ange-pics.html

When you're done, don't forget to burp it .... to get the trapped air out off the cooling system.

Feb 13, 2014 | 07:57 AM

#11

1JZPWRD

1JZ Single SC400

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From: Alabama, Roll Tide!

This thread is over 3 years old. Skirts (Nick) has sold this car like over a year ago. He is now into Saleen Mustangs.

Feb 13, 2014 | 07:07 PM

#12

Maeve

Instructor

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From: California

Quote:

Originally Posted by 1JZPWRD

This thread is over 3 years old. Skirts (Nick) has sold this car like over a year ago. He is now into Saleen Mustangs.

Oh wow ... LOL. thanks!
I didn't even pay attention to the date.

Jul 7, 2025 | 11:14 PM

#13

ESCEE400

Driver

Joined: Oct 2022

Posts: 52

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From: Washington

Quote:

Originally Posted by Studiogeek

Around 3 o'clock .

3 o’clock seems like the middle point but mine goes up to the second notch and stays there. If it goes to the third notch then it’s over the middle point.