Heater Core Control Valve Delete? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

240nessx · 11-13-2011, 09:34 PM

Is it possible to remove this control valve, and block off that pinhole where the rod comes out?

rcdad123 · 11-13-2011, 10:24 PM

yes it is possible, but the heater core will always be hot, that would suck in the summer or during hot days.

240nessx · 11-14-2011, 09:56 AM

i dont care if its hot during the summer, i just want heat during the winter.

jacobs13 · 11-14-2011, 11:42 AM

why would you want to remove that? You still have heat with it as long as its open

240nessx · 11-14-2011, 07:49 PM

i dont have heat and im pretty sure its stuck closed, so by removing it, if i get heat i know thats my problem

jedi03 · 11-14-2011, 09:09 PM

try disconnecting ur heater hoses an run water through it...if flows freely will be open...if not stuck closed

jacobs13 · 11-15-2011, 12:30 PM

Did you not take that pic? Looks open to me. Just take it off and clean it out and out some lub on the hinge and put it back in so it works properly

240nessx · 11-15-2011, 01:44 PM

Lol no I found that on google...ill try lubing it and cleaning it thanks.

EDacIouSX · 11-17-2011, 06:15 AM

yea I need to fix mine too... let me know if that works for you

240nessx · 11-21-2011, 07:56 AM

I disconnected the heater hoses and ran water through both sides. No blockage either way, so its not the control valve.i also disconnected the top and lower heater hose while the car was running and coolant was running through the heater core so its not air locked. Now I'm really stumped. You can hear the blend door moving and hear the sound difference. But the temp stays the same.

jedi03 · 11-21-2011, 08:35 PM

if you have electric fans install controller that will turn them off so your motor can heat up

240nessx · 11-22-2011, 06:11 PM

i have a clutch fan...but i held that stopped to heat it up...and still no heat

jedi03 · 11-23-2011, 07:43 PM

leave ur rad cap off while running the car...see if it bubbles as it runs...if so you got a bad headgasket..if not you may have block in ur lines somewhere

11-13-2011, 10:24 PM	#2
rcdad123 Zilvia Addict Join Date: Jul 2011 Location: san diego Posts: 639 Trader Rating: (0) Feedback Score: 0 reviews	yes it is possible, but the heater core will always be hot, that would suck in the summer or during hot days.

11-14-2011, 09:56 AM	#3
240nessx Leaky Injector Join Date: Jun 2010 Location: 631 New York Age: 32 Posts: 83 Trader Rating: (0) Feedback Score: 0 reviews	i dont care if its hot during the summer, i just want heat during the winter.

11-14-2011, 11:42 AM	#4
jacobs13 Zilvia FREAK! Join Date: May 2009 Location: Long Beach Age: 33 Posts: 1,061 Trader Rating: (27) Feedback Score: 27 reviews	why would you want to remove that? You still have heat with it as long as its open

11-14-2011, 07:49 PM	#5
240nessx Leaky Injector Join Date: Jun 2010 Location: 631 New York Age: 32 Posts: 83 Trader Rating: (0) Feedback Score: 0 reviews	i dont have heat and im pretty sure its stuck closed, so by removing it, if i get heat i know thats my problem

11-14-2011, 09:09 PM	#6
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,842 Trader Rating: (8) Feedback Score: 8 reviews	try disconnecting ur heater hoses an run water through it...if flows freely will be open...if not stuck closed

11-15-2011, 12:30 PM	#7
jacobs13 Zilvia FREAK! Join Date: May 2009 Location: Long Beach Age: 33 Posts: 1,061 Trader Rating: (27) Feedback Score: 27 reviews	Did you not take that pic? Looks open to me. Just take it off and clean it out and out some lub on the hinge and put it back in so it works properly

11-15-2011, 01:44 PM	#8
240nessx Leaky Injector Join Date: Jun 2010 Location: 631 New York Age: 32 Posts: 83 Trader Rating: (0) Feedback Score: 0 reviews	Lol no I found that on google...ill try lubing it and cleaning it thanks.

11-17-2011, 06:15 AM	#9
EDacIouSX Post Whore! Join Date: Nov 2004 Location: Los Angeles Age: 39 Posts: 4,566 Trader Rating: (53) Rides Gallery: EDacIouSX Feedback Score: 53 reviews	yea I need to fix mine too... let me know if that works for you

11-21-2011, 07:56 AM	#10
240nessx Leaky Injector Join Date: Jun 2010 Location: 631 New York Age: 32 Posts: 83 Trader Rating: (0) Feedback Score: 0 reviews	I disconnected the heater hoses and ran water through both sides. No blockage either way, so its not the control valve.i also disconnected the top and lower heater hose while the car was running and coolant was running through the heater core so its not air locked. Now I'm really stumped. You can hear the blend door moving and hear the sound difference. But the temp stays the same.

11-21-2011, 08:35 PM	#11
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,842 Trader Rating: (8) Feedback Score: 8 reviews	if you have electric fans install controller that will turn them off so your motor can heat up

11-22-2011, 06:11 PM	#12
240nessx Leaky Injector Join Date: Jun 2010 Location: 631 New York Age: 32 Posts: 83 Trader Rating: (0) Feedback Score: 0 reviews	i have a clutch fan...but i held that stopped to heat it up...and still no heat

11-23-2011, 07:43 PM	#13
jedi03 Nissanaholic! Join Date: Jul 2008 Location: albuquerque Posts: 1,842 Trader Rating: (8) Feedback Score: 8 reviews	leave ur rad cap off while running the car...see if it bubbles as it runs...if so you got a bad headgasket..if not you may have block in ur lines somewhere