Coolant Temp Sensor Location

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Altiman94
Posts: 5891
Joined: Sun Jun 22, 2003 12:13 pm
Car: 1989 Nissan 240SX

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I was told my Coolant Temp Sensor is bad causing my bobbing idle. I wanna know the location of this sensor and how I can check to verify that it's indeed causing my problem. It is the one for the ecu, not the gauge cluster. Thanks in advance. Also, a part number would help out as well as any advice you have for putting this in correctly.


groundhogday1976
Posts: 346
Joined: Thu Jan 09, 2003 2:17 pm
Car: 2015 Altima 2.5 S

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On the DE, it's next to the intake mani where the top rad hose goes in, just below the air burp hole (for getting air out of coolant). Not sure about the E.

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allthrottlenobottle
Posts: 254
Joined: Thu Aug 28, 2003 5:18 pm
Car: 91 s13
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i believe the ecu sensor is right beside the gauge sensor.single wire with a black clip.

Altiman94
Posts: 5891
Joined: Sun Jun 22, 2003 12:13 pm
Car: 1989 Nissan 240SX

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that's what I was told, that it was a single wired connector. I'm going to replace this as soon as I get my car back from the shop.

Altiman94
Posts: 5891
Joined: Sun Jun 22, 2003 12:13 pm
Car: 1989 Nissan 240SX

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hopefully it corrects my idle.

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allthrottlenobottle
Posts: 254
Joined: Thu Aug 28, 2003 5:18 pm
Car: 91 s13
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it should, i did mine at the same time and my idle smoothed out (but i didn't have a real bobbing idle,just some variation)hope it goes well

dbhittin
Posts: 93
Joined: Wed Nov 05, 2003 7:16 am

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where is the one for the gauge, cause my gauge isn't working. my car is a 89

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allthrottlenobottle
Posts: 254
Joined: Thu Aug 28, 2003 5:18 pm
Car: 91 s13
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2 wire plug where rad hose meets engine block by thermostat housing

DriftBandit
Posts: 157
Joined: Sun Oct 19, 2003 7:54 pm
Car: this is my 3rd 240sx

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Does anybody know where it is on an s14 sr20det, I Have weird idle problems. Sometines when i shift my rpms wont go back down, they will stay at 2500-3000 rpms for a while even when i am stopped and in neutral??

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corn322
Posts: 1572
Joined: Tue Apr 22, 2003 10:11 am
Car: 1993 240sx
Location: Austin, TX

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so on the kae, the ECU temp gauge is single wire, and gauge cluster one is 2 wire?

crap.

NISTECH
Posts: 10585
Joined: Sun May 25, 2003 4:17 am

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you guys have the sensors backwards. the 2 wire is the ecu input sensor the single wire is the gauge sensor.

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corn322
Posts: 1572
Joined: Tue Apr 22, 2003 10:11 am
Car: 1993 240sx
Location: Austin, TX

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good to hear. nistech saves the day, once again


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