sr with koyo overheating on freeway??? wtf??? help please!!! - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

uthemofo · 07-10-2007, 12:35 AM

Ok so i just put in a koyo that i got used with some dule flex-a-lite fans, yes i now know that they are crap but i got the fans and the koyo for $200 so no complaints. So after one track day i decided to take those fans out and get my self a tarus fan, I installed the fan and actually made my self a piece of aluminum that covers the whole rad. this fan works way way better. i have it wired to a auto temp sensor that come on between 180 and 220 and i can adjust it, i have it set at 170 and it runs cool all day long. UNTILL i got on the freeway, i was cruzin on the freeway at like 65 or 70 and then it started to climb in temp... im like wtf why would it do that especially since its a nice cool night on the freeway.

it did this all the way home, i would stop let it cool then it would heat back up again, stop cool and same thing.

my question is WHY why would it do this? maby the rad is partly clogged??? maby my thermostat is being wack? stock one by the way

i honestly dont know

please help me

thanks
matt

07-10-2007, 12:47 AM

i have those fans - i like them, regardless of what people say.

anyway, check to make sure you dont have air in your system.

homegaragespl · 07-10-2007, 12:52 AM

check these, fluid levels, belt tension, maybe your fan shroud (oem is the cheapest and best), and of course water pump and thermo stat....in that order..

Vision Garage · 07-10-2007, 12:56 AM

he has a custom shroud already made for the taurus fans. It could be water pump failed at track and you didnt know. or thermo failure. I woudl say do was homegarage said.

uthemofo · 07-10-2007, 12:57 AM

yea all the fluids are perfect belt tension as well, i'm running tarus fan so thats good, my water pump is beginning to leak from the weep hole (pin hole) im guessing thats it? maby as well as the thermostat?

Vision Garage · 07-10-2007, 02:22 AM

Okay if the weep hole is leaking that means your waterpump is out or going out. Replace it and you are good to go. Part should be less than 50 for KA. Not so sure on SR.

uthemofo · 07-11-2007, 04:58 AM

yea its a little more than that for a sr because i can go down to local auto parts store and pick it up...but through my sponcer VEX MOTOR SPORTS it will be a fair price.

hehe totally promoting their name by doing that but yea thanks guys your replies were great.

thanks
matt

*fliprayzin240sx* · 07-11-2007, 05:13 AM

If you have to change your water pump, might as well change your thermostat. Go to Kragens/Pepboys/auto zone and have them match you a colder thermostat. Itll work just as well as the nismo thermostat but cost less than $20. They just gotta cross reference the stock sr thermostat's part number and they should be able to give you something thats colder.

blu808 · 07-11-2007, 05:32 AM

Might as well replace your thermostat while your at it. Also did you bleed all the air from the system?

07-10-2007, 12:35 AM	#1
uthemofo Zilvia Junkie Join Date: Apr 2006 Location: san jose Posts: 425 Trader Rating: (2) Feedback Score: 2 reviews	sr with koyo overheating on freeway??? wtf??? help please!!! Ok so i just put in a koyo that i got used with some dule flex-a-lite fans, yes i now know that they are crap but i got the fans and the koyo for $200 so no complaints. So after one track day i decided to take those fans out and get my self a tarus fan, I installed the fan and actually made my self a piece of aluminum that covers the whole rad. this fan works way way better. i have it wired to a auto temp sensor that come on between 180 and 220 and i can adjust it, i have it set at 170 and it runs cool all day long. UNTILL i got on the freeway, i was cruzin on the freeway at like 65 or 70 and then it started to climb in temp... im like wtf why would it do that especially since its a nice cool night on the freeway. it did this all the way home, i would stop let it cool then it would heat back up again, stop cool and same thing. my question is WHY why would it do this? maby the rad is partly clogged??? maby my thermostat is being wack? stock one by the way i honestly dont know please help me thanks matt __________________ My Feedback

07-10-2007, 12:52 AM	#3
homegaragespl Zilvia Junkie Join Date: Feb 2007 Location: Los Angeles Posts: 506 Trader Rating: (0) Feedback Score: 0 reviews	check these, fluid levels, belt tension, maybe your fan shroud (oem is the cheapest and best), and of course water pump and thermo stat....in that order.. __________________ Buddy club driver side rails for sale $130 obo

07-10-2007, 12:56 AM	#4
Vision Garage Nissanaholic! Join Date: Apr 2007 Location: USDM Land Posts: 1,799 Trader Rating: (9) Feedback Score: 9 reviews	he has a custom shroud already made for the taurus fans. It could be water pump failed at track and you didnt know. or thermo failure. I woudl say do was homegarage said. __________________

07-10-2007, 12:57 AM	#5
uthemofo Zilvia Junkie Join Date: Apr 2006 Location: san jose Posts: 425 Trader Rating: (2) Feedback Score: 2 reviews	yea all the fluids are perfect belt tension as well, i'm running tarus fan so thats good, my water pump is beginning to leak from the weep hole (pin hole) im guessing thats it? maby as well as the thermostat? __________________ My Feedback

07-10-2007, 02:22 AM	#6
Vision Garage Nissanaholic! Join Date: Apr 2007 Location: USDM Land Posts: 1,799 Trader Rating: (9) Feedback Score: 9 reviews	Okay if the weep hole is leaking that means your waterpump is out or going out. Replace it and you are good to go. Part should be less than 50 for KA. Not so sure on SR. __________________

07-10-2007, 12:47 AM	#2
ixfxi Guest Posts: n/a	i have those fans - i like them, regardless of what people say. anyway, check to make sure you dont have air in your system.

07-11-2007, 04:58 AM	#7
uthemofo Zilvia Junkie Join Date: Apr 2006 Location: san jose Posts: 425 Trader Rating: (2) Feedback Score: 2 reviews	yea its a little more than that for a sr because i can go down to local auto parts store and pick it up...but through my sponcer VEX MOTOR SPORTS it will be a fair price. hehe totally promoting their name by doing that but yea thanks guys your replies were great. thanks matt __________________ My Feedback

07-11-2007, 05:13 AM	#8
fliprayzin240sx Man w/ CTSV & a Car Seat Join Date: Aug 2002 Location: Tampa Posts: 17,998 Trader Rating: (19) Rides Gallery: fliprayzin240sx Feedback Score: 19 reviews	If you have to change your water pump, might as well change your thermostat. Go to Kragens/Pepboys/auto zone and have them match you a colder thermostat. Itll work just as well as the nismo thermostat but cost less than $20. They just gotta cross reference the stock sr thermostat's part number and they should be able to give you something thats colder. __________________ If you think Zilvia has too many assholes... CLICK HERE!!!

07-11-2007, 05:32 AM	#9
blu808 Post Whore! Join Date: Dec 2002 Location: Campbell, Ca Age: 42 Posts: 5,010 Trader Rating: (3) Feedback Score: 3 reviews	Might as well replace your thermostat while your at it. Also did you bleed all the air from the system? __________________