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Originally Posted by johngriff
Well just to put it out there. There are two temp sensors, one that is complete shit, and one that is really good. If you have an ems system, you can calibrate it to read the EXACT temp off this sensor.
The dummy guage blows.
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They are both pretty much complete shit, reading off the ems is the way to go.
I would still reccomend an after market gauge or brand new oem sensor, thats waht i did.
The one in the display gauge in dash just routes a ground circuit iirc. theres not two fully independent sensors on older model nissans that route information intot he car...
**R240NA** got it right , thanks
To orig poster: Take your car to a good machine shop an dhave them use a straigth ede wtiha feeler gauge then compare to oem "you could do taht yourself" but you seem kind of flustered. Re-machining (not jsut resurfacing the head) but machining to make up for minor warp is like 25 bucks at a good machine shop.
hope everything works out for you.
cheers