Engine overheating. - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

dmaestro · 06-27-2002, 09:26 PM

Alrighty, my 93 240SX engine is overheating.  It keeps going past the top line and gets pegged on the H.  So I changed my oil, replaced my radiator, and replaced my thermostat. So I did that and that helped a lot.  It no longer gets pegged on the H, buuuuttt the little dial on the meter doesnt stay in the middle, it is probably about 3/5-3/4 the way to the H and doesnt fluctuate much, so its a little past the middle.  I have a HUD, I dont know if it is suppose to run a little past the middle...sooooo...help!  I bought a new coolant temperature sensor but I dont see where I install it at, anyone know where?  Doesnt say where it is located in my manual, just shows a pic of the sensor.

tnord · 06-27-2002, 09:34 PM

try water wetter from redline........it kept my friends race car from overheating.......lots of people use it

also check to make sure all fans are running when they should be

guidot · 06-27-2002, 11:56 PM

My thermostat on my S14 runs my gauge hot...its about 3/4 way up, but that is all the time...from 30 degrees outside to 90 degrees with A/C on ( like yesterday...I hate the heat)
<img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt='

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kumanchu · 07-01-2002, 01:06 AM

i heard from someone one the amarok list that the  temp sensor is pretty much 3 position when he tested it out. he said it went from extremely cold, went to operating temperature, and above that just shot straight up to hit the h.  i think he used some sort of voltage across the leads to test it out. so basically it may be that your new thermostat is just putting out a slightly higher voltage than your previous one.

just speculation ^_^

06-27-2002, 11:56 PM	#3
guidot Zilvia Junkie Join Date: Feb 2002 Location: Cape Cod, MA Age: 45 Posts: 443 Trader Rating: (0) Feedback Score: 0 reviews	My thermostat on my S14 runs my gauge hot...its about 3/4 way up, but that is all the time...from 30 degrees outside to 90 degrees with A/C on ( like yesterday...I hate the heat) <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/tounge.gif" border="0" valign="absmiddle" alt=''> __________________ -Jeff T. 96 240SX 240SXONE http://www.240sxone.com

06-27-2002, 09:26 PM	#1
dmaestro Zilvia Junkie Join Date: Sep 2001 Location: Sacramento Age: 40 Posts: 304 Trader Rating: (0) Feedback Score: 0 reviews	Alrighty, my 93 240SX engine is overheating.  It keeps going past the top line and gets pegged on the H.  So I changed my oil, replaced my radiator, and replaced my thermostat. So I did that and that helped a lot.  It no longer gets pegged on the H, buuuuttt the little dial on the meter doesnt stay in the middle, it is probably about 3/5-3/4 the way to the H and doesnt fluctuate much, so its a little past the middle.  I have a HUD, I dont know if it is suppose to run a little past the middle...sooooo...help!  I bought a new coolant temperature sensor but I dont see where I install it at, anyone know where?  Doesnt say where it is located in my manual, just shows a pic of the sensor.

06-27-2002, 09:34 PM	#2
tnord Nissanaholic! Join Date: Dec 2001 Posts: 1,975 Trader Rating: (0) Feedback Score: 0 reviews	try water wetter from redline........it kept my friends race car from overheating.......lots of people use it also check to make sure all fans are running when they should be

07-01-2002, 01:06 AM	#4
kumanchu Leaky Injector Join Date: Mar 2002 Location: No VA / Chicago Posts: 136 Trader Rating: (0) Feedback Score: 0 reviews	i heard from someone one the amarok list that the  temp sensor is pretty much 3 position when he tested it out. he said it went from extremely cold, went to operating temperature, and above that just shot straight up to hit the h.  i think he used some sort of voltage across the leads to test it out. so basically it may be that your new thermostat is just putting out a slightly higher voltage than your previous one. just speculation ^_^