Help Ka24de over heating - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

blazn240sx · 02-23-2006, 11:58 PM

hi my friend just bought a car recently found out no thermostat ok so we added one right the car now overheats we try everything to fix it but no response ok what we change are, waterpump, radiator and cap, clutch fan, and upper and lower hoses the coolant 3 times bleed it about 5 times and now thinkin about changing the heater core because at some time when it overheat and we turn on the heater it doesnt work but when it at normal driving tempature it works so im stumped i dont know what else to change please give ideas and it only happens when we are driving it on the street through stop and go but on the freeway it fine

breakindrifts · 02-24-2006, 12:17 AM

http://club240.com/forums/showthread.php?threadid=8769

Search noob. And type in a proper way that I can actually read wtf you are trying to communicate.

boosteds13 · 02-24-2006, 07:10 AM

Quote:

Originally Posted by breakindrifts

http://club240.com/forums/showthread.php?threadid=8769

Search noob. And type in a proper way that I can actually read wtf you are trying to communicate.

WTF kind of response was that? You linked him to an entirely different forum. The "search noob" flame only works if you link him to a thread local to the board you are on.

aznpoopy · 02-24-2006, 08:04 AM

you can try bypassing the heater core to see if thats causing blockage.

my friend is having the same issue with his cavvy. changed the radiator, e-fan, thermostat, waterpump... basically everything except the heater core. final diagnosis... blown headgasket. it was a very tiny leak. it didn't overheat at idle. but once you drove it at any appreciable speed, it overheated.

pr240sx · 02-24-2006, 08:30 AM

Air trapped in the system.
The heater is off the loop when the AC is in Cold position
At least on the S13

blazn240sx · 02-24-2006, 10:37 AM

thank to all the people responding will check headgasket

[HK]240sx · 02-24-2006, 10:42 AM

Quote:

Originally Posted by breakindrifts

http://club240.com/forums/showthread.php?threadid=8769

Search noob. And type in a proper way that I can actually read wtf you are trying to communicate.

blazn240sx · 02-24-2006, 10:43 AM

think im going to do a leakdown test

neverlift · 02-24-2006, 05:04 PM

blocked head, did you use rtv silicone on yor water pump?

blazn240sx · 02-25-2006, 09:35 PM

yes i did use rtv silicon and a gasket also the heater now dont work it only blow cold air now

TAMTANIUM · 02-25-2006, 10:02 PM

make sure you add more water than coolant...try that. Just keep adding water.

Agamemnon · 02-25-2006, 10:07 PM

Is it possible that you may have a coolant leak somewhere and that it has let some air in everytime you start the car?

I have the same prob. My heater doesnt work until about ten minutes into driving and I have small leak somewhere under the intake mani.

Irukandji · 02-25-2006, 10:23 PM

Quote:

Originally Posted by breakindrifts

http://club240.com/forums/showthread.php?threadid=8769

Search noob. And type in a proper way that I can actually read wtf you are trying to communicate.

it's funny when newbs call people newbs

sorry we don't search the entire interweb.

g6civcx · 02-25-2006, 10:23 PM

1) Did you install the thermostat with the jiggle valve in the proper orientation (pointed up)? If not, check it. Check that the thermostat operates properly and opens up for coolant flow when warm.

2) Did you pressure test the cooling system to determine if it's hold proper pressure and if there are any leaks? If not, do it. It should only cost you a few bucks. Any reputable shop will have the proper testing tool and know the proper procedures. Fix the problems, if any.

3) Did you perform a coolant flush? If not, do it. Not just a drain and refill since it will only clear out fluid in the radiator, but a complete flush and transfusion with new coolant.

4) Is your cooling fan working properly? Do you have the factory fan shroud? This will help airflow. Check to make sure that the shroud is not broken. Also check to see that the fan mechanism operates correctly.

02-23-2006, 11:58 PM	#1
blazn240sx Leaky Injector Join Date: Oct 2003 Location: Frisko Age: 39 Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	Help Ka24de over heating hi my friend just bought a car recently found out no thermostat ok so we added one right the car now overheats we try everything to fix it but no response ok what we change are, waterpump, radiator and cap, clutch fan, and upper and lower hoses the coolant 3 times bleed it about 5 times and now thinkin about changing the heater core because at some time when it overheat and we turn on the heater it doesnt work but when it at normal driving tempature it works so im stumped i dont know what else to change please give ideas and it only happens when we are driving it on the street through stop and go but on the freeway it fine

02-24-2006, 12:17 AM	#2
breakindrifts Zilvia FREAK! Join Date: Apr 2005 Location: Agoura Hills, CA Age: 36 Posts: 1,006 Trader Rating: (0) Feedback Score: 0 reviews	http://club240.com/forums/showthread.php?threadid=8769 Search noob. And type in a proper way that I can actually read wtf you are trying to communicate. __________________ [

02-24-2006, 05:04 PM	#9
neverlift Zilvia Member Join Date: Jan 2006 Location: DUVAL Posts: 166 Trader Rating: (0) Feedback Score: 0 reviews	blocked head, did you use rtv silicone on yor water pump? __________________ derp derp

02-24-2006, 08:04 AM	#4
aznpoopy Post Whore! Join Date: Mar 2003 Location: New Jersey Age: 44 Posts: 5,013 Trader Rating: (1) Feedback Score: 1 reviews	you can try bypassing the heater core to see if thats causing blockage. my friend is having the same issue with his cavvy. changed the radiator, e-fan, thermostat, waterpump... basically everything except the heater core. final diagnosis... blown headgasket. it was a very tiny leak. it didn't overheat at idle. but once you drove it at any appreciable speed, it overheated.

02-24-2006, 08:30 AM	#5
pr240sx Zilvia Addict Join Date: Jan 2002 Posts: 627 Trader Rating: (0) Feedback Score: 0 reviews	Air trapped in the system. The heater is off the loop when the AC is in Cold position At least on the S13

02-24-2006, 10:37 AM	#6
blazn240sx Leaky Injector Join Date: Oct 2003 Location: Frisko Age: 39 Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	thank to all the people responding will check headgasket

02-24-2006, 10:43 AM	#8
blazn240sx Leaky Injector Join Date: Oct 2003 Location: Frisko Age: 39 Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	think im going to do a leakdown test

02-25-2006, 09:35 PM	#10
blazn240sx Leaky Injector Join Date: Oct 2003 Location: Frisko Age: 39 Posts: 52 Trader Rating: (0) Feedback Score: 0 reviews	yes i did use rtv silicon and a gasket also the heater now dont work it only blow cold air now

02-25-2006, 10:02 PM	#11
TAMTANIUM Zilvia FREAK! Join Date: Apr 2005 Location: Socal. wc Age: 38 Posts: 1,022 Trader Rating: (1) Feedback Score: 1 reviews	make sure you add more water than coolant...try that. Just keep adding water.

02-25-2006, 10:07 PM	#12
Agamemnon Post Whore! Join Date: Sep 2003 Location: Lake Stevens, WA Age: 42 Posts: 2,667 Trader Rating: (20) Feedback Score: 20 reviews	Is it possible that you may have a coolant leak somewhere and that it has let some air in everytime you start the car? I have the same prob. My heater doesnt work until about ten minutes into driving and I have small leak somewhere under the intake mani.

02-25-2006, 10:23 PM	#14
g6civcx Post Whore! Join Date: Apr 2004 Location: Virginia, USA Posts: 5,764 Trader Rating: (5) Feedback Score: 5 reviews	1) Did you install the thermostat with the jiggle valve in the proper orientation (pointed up)? If not, check it. Check that the thermostat operates properly and opens up for coolant flow when warm. 2) Did you pressure test the cooling system to determine if it's hold proper pressure and if there are any leaks? If not, do it. It should only cost you a few bucks. Any reputable shop will have the proper testing tool and know the proper procedures. Fix the problems, if any. 3) Did you perform a coolant flush? If not, do it. Not just a drain and refill since it will only clear out fluid in the radiator, but a complete flush and transfusion with new coolant. 4) Is your cooling fan working properly? Do you have the factory fan shroud? This will help airflow. Check to make sure that the shroud is not broken. Also check to see that the fan mechanism operates correctly.