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1991 Nissan 300ZX Engine Temperature Sensor

Tiny
SLYDVOX
  • MEMBER
  • 1991 NISSAN 300ZX
  • 6 CYL
  • 2WD
  • MANUAL
  • 18,000 MILES
My 91 Z ran absolutely smoothly until one day it just ran like it had one cylinder running poorly. Nissan dealer did a very quick look at some plugs while working on something completely different and said it was running extremely rich. This jibes with the ECU that indicated that something was wrong with the engine temp sensor. One very cold morning, it ran as smoothly as it used to, until after it warmed up (about 3-5 min.) and snapped right back into it's rough state. This wouldn't be much of a problem to fix if I could just learn the ETC's location. This is NOT supposed to be the same as the engine COOLANT temperature sensor which I replaced just in case. I've actually found the part but no manual ever says where it is. I've really been looking and found nothing helpful.


http://www.2carpros.com/forum/automotive_pictures/370920_300zxETS_1.jpg



http://www.2carpros.com/forum/automotive_pictures/370920_300zxETS_2.jpg

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Thursday, June 18th, 2009 AT 4:16 PM

1 Reply

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Mitchell shows a "cylinder head temp sensor" located behind the thermostat housing on the front of the engine. It also shows the "coolant temp sensor" on the thermostat housing. Hope this helps
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Friday, June 19th, 2009 AT 8:04 AM

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