My KA (SOHC) runs cold 24/7? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

doomviillain · 04-01-2010, 03:39 PM

I bought another 240sx hatch. when i bought it the guy says the motor was rebuilt 8000 miles ago and showed paper work. its all stock wit advanced ignition timing. I drove from north hollywood to lancaster and back (75 miles). the whole time my engine runs cold, maybe a little above the C, bear in mind it only has water in the radiator! I know its not the gauge because i turn on the heater and it really doesnt blow hot. Im thinking i probably dont have a therostat, I would go to a mechanic and check it out but I figured id ask first. any advice on what it could be?

redpanda87 · 04-01-2010, 03:42 PM

Its def your thermostat, its probably stuck open. easy fix.

doomviillain · 04-01-2010, 04:02 PM

wouldnt that be bad for the motor

buentellomma · 04-01-2010, 05:50 PM

thats your thermostat , my hard body pickup does the same thing

I LUV MY S13 · 04-01-2010, 05:52 PM

not bad, but running too cold isnt always good, you always want your motor running at the right temp...just replace with a nismo thermo, they're only like $40 and easy to install

doomviillain · 04-03-2010, 01:09 AM

will do, tnx guys

Slammed Assassin · 04-03-2010, 01:22 AM

agreed, its bad if you daily your car and dont reach proper running temps.

after you change it make sure you bleed out all the air.

rwtf · 01-16-2012, 07:06 PM

sorry to bump a old thread but i'm having the same problem.
I'm running a Koyo Rad with just a 12inch Efan in a remote switch.

I replaced the Tstat with a BRAND NEW one today and it still runs cold.

Any ideas?

Mishkin_707 · 01-17-2012, 12:22 PM

@rwtf, where did you get your new thermostat? Could be bad if you got it from autozone, that or you just need to bleed the system a bit more

Pro ViZIon · 01-17-2012, 02:30 PM

Well if he had air in the system he would probably overheating.

04-01-2010, 03:39 PM	#1
doomviillain Zilvia Junkie Join Date: Jul 2009 Location: North Hollywood CA Age: 34 Posts: 420 Trader Rating: (5) Feedback Score: 5 reviews	My KA (SOHC) runs cold 24/7? I bought another 240sx hatch. when i bought it the guy says the motor was rebuilt 8000 miles ago and showed paper work. its all stock wit advanced ignition timing. I drove from north hollywood to lancaster and back (75 miles). the whole time my engine runs cold, maybe a little above the C, bear in mind it only has water in the radiator! I know its not the gauge because i turn on the heater and it really doesnt blow hot. Im thinking i probably dont have a therostat, I would go to a mechanic and check it out but I figured id ask first. any advice on what it could be?

04-01-2010, 05:52 PM	#5
I LUV MY S13 Post Whore! Join Date: Dec 2008 Location: Norwalk, Los Angeles Age: 34 Posts: 3,349 Trader Rating: (35) Rides Gallery: I LUV MY S13 Feedback Score: 35 reviews	not bad, but running too cold isnt always good, you always want your motor running at the right temp...just replace with a nismo thermo, they're only like $40 and easy to install __________________ -Jorge

04-03-2010, 01:22 AM	#7
Slammed Assassin Nissanaholic! Join Date: Feb 2007 Location: Oxnard/SV Posts: 2,065 Trader Rating: (34) Feedback Score: 34 reviews	agreed, its bad if you daily your car and dont reach proper running temps. after you change it make sure you bleed out all the air. __________________

01-16-2012, 07:06 PM	#8
rwtf Zilvia Addict Join Date: Jun 2011 Location: Maryville, TN Age: 32 Posts: 830 Trader Rating: (3) Feedback Score: 3 reviews	sorry to bump a old thread but i'm having the same problem. I'm running a Koyo Rad with just a 12inch Efan in a remote switch. I replaced the Tstat with a BRAND NEW one today and it still runs cold. Any ideas? __________________

01-17-2012, 02:30 PM	#10
Pro ViZIon Zilvia Junkie Join Date: Dec 2008 Location: Las Vegas, NV Age: 33 Posts: 415 Trader Rating: (0) Feedback Score: 0 reviews	Well if he had air in the system he would probably overheating. __________________ 1990 Nissan 240SX w/KA24DE - New project 1984 Mazda RX-7 GSL-SE 13B

04-01-2010, 03:42 PM	#2
redpanda87 Join Date: Mar 2010 Location: Lower NY Posts: 9 Trader Rating: (0) Feedback Score: 0 reviews	Its def your thermostat, its probably stuck open. easy fix.

04-01-2010, 04:02 PM	#3
doomviillain Zilvia Junkie Join Date: Jul 2009 Location: North Hollywood CA Age: 34 Posts: 420 Trader Rating: (5) Feedback Score: 5 reviews	wouldnt that be bad for the motor

04-01-2010, 05:50 PM	#4
buentellomma Zilvia Junkie Join Date: Mar 2010 Location: Goodyear AZ Age: 38 Posts: 480 Trader Rating: (6) Feedback Score: 6 reviews	thats your thermostat , my hard body pickup does the same thing

04-03-2010, 01:09 AM	#6
doomviillain Zilvia Junkie Join Date: Jul 2009 Location: North Hollywood CA Age: 34 Posts: 420 Trader Rating: (5) Feedback Score: 5 reviews	will do, tnx guys

01-17-2012, 12:22 PM	#9
Mishkin_707 Zilvia Addict Join Date: Jul 2009 Location: everywhere Age: 42 Posts: 732 Trader Rating: (1) Feedback Score: 1 reviews	@rwtf, where did you get your new thermostat? Could be bad if you got it from autozone, that or you just need to bleed the system a bit more