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

Drftn93SR · 02-26-2009, 03:10 PM

So I've been experiencing some temperature issues now that we are starting to have warmer days... First off let me tell you my coolant setup, i have a Koyo Aluminum radiator, with 2x Flex - A - Lite fans and the thermostate is set to 190F... It has plenty of coolant, and when i start getting into stop and go traffic or anything besides for cruising for a distance, it wants to run really hot... I have a Greddy Informeter that is wired into an OBD2 harness... It is telling me that my average temp when cruising is 170F when i start and stop it begins to climb and ive had it go up to 230F, the needle on my cluster climbs to Hot and by then i get nervous and blast the heat and turn the car off... Any suggestions or input on my situation, thanks in advance...

SilviaSR20DET · 02-26-2009, 11:33 PM

when you added coolant did you bleed air out of the system completely? Air in the system could overheat your engine.

Drftn93SR · 02-28-2009, 10:50 AM

No i didnt put the coolant in, i recently had a company rebuild my engine with internals, so i will try that and see what happens, if it continues... I do remember when i turn my engine off i noticed a gurgling sound coming from my engine bay... could that be the air resettling?

projectRDM · 02-28-2009, 11:54 AM

Quote:

Originally Posted by Drftn93SR

No i didnt put the coolant in, i recently had a company rebuild my engine with internals, so i will try that and see what happens, if it continues... I do remember when i turn my engine off i noticed a gurgling sound coming from my engine bay... could that be the air resettling?

Bingo. Air pocket. Bleed it profusely.

rising_sun13 · 03-01-2009, 09:59 AM

That would suck if its just air and the company couldn't even bleed the system.... oh well

codunc · 03-01-2009, 10:03 AM

You would be surprised how many people don't know the proper way to bleed a coolant system

Drftn93SR · 03-01-2009, 10:46 PM

Just to warn anyone, it was JGY Customs, they took a year to rebuild an engine... and the rebuild it self seems ok (so far) but they did a shotty job putting it back in...

DCP94 · 03-02-2009, 09:10 PM

damn a year? hmm did they send you the same motor back? lol just kidding, but thats ridiculous that it took that long and they didn't even bleed the coolant..i'm sorry man better check over everything else again

godsmack · 03-03-2009, 08:58 AM

yes bleed your radiator. but something else to help while in traffic. if you can throw in an on switch on top of the thermo switch for the fans so you know that the fans will stay on while sitting there. if you do this just remember to turn the switch off eventually. lol

Drftn93SR · 03-16-2009, 02:36 PM

Just wanted to show some closure... I hate when you read a thread and dont know if the issue is resolved... I bleed the radiator and it didnt fix the problem, what i did end up noticing is that my fans didnt kick on, which i didnt understand at first until i pushed on the fuse and they kicked on... i inspected the housing and noticed that it had actually been getting really hot, when i removed the fuse i could bend it! Im guessing it was getting to hot being tapped against my power wire comin from my battery from the trunk, so i replaced the entire housing and replaced the fuse and moved it off the power wire and i has been working like a champ ever since, i can sit in one spot and it never goes above 190F... Problem fixed... For now!

02-26-2009, 03:10 PM	#1
Drftn93SR Join Date: Sep 2007 Location: Roanoke, VA Age: 33 Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	Heat Issues So I've been experiencing some temperature issues now that we are starting to have warmer days... First off let me tell you my coolant setup, i have a Koyo Aluminum radiator, with 2x Flex - A - Lite fans and the thermostate is set to 190F... It has plenty of coolant, and when i start getting into stop and go traffic or anything besides for cruising for a distance, it wants to run really hot... I have a Greddy Informeter that is wired into an OBD2 harness... It is telling me that my average temp when cruising is 170F when i start and stop it begins to climb and ive had it go up to 230F, the needle on my cluster climbs to Hot and by then i get nervous and blast the heat and turn the car off... Any suggestions or input on my situation, thanks in advance...

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02-26-2009, 11:33 PM	#2
SilviaSR20DET Zilvia FREAK! Join Date: Mar 2002 Location: Seattle, WA Posts: 1,221 Trader Rating: (9) Feedback Score: 9 reviews	when you added coolant did you bleed air out of the system completely? Air in the system could overheat your engine.

02-28-2009, 10:50 AM	#3
Drftn93SR Join Date: Sep 2007 Location: Roanoke, VA Age: 33 Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	No i didnt put the coolant in, i recently had a company rebuild my engine with internals, so i will try that and see what happens, if it continues... I do remember when i turn my engine off i noticed a gurgling sound coming from my engine bay... could that be the air resettling?

03-01-2009, 09:59 AM	#5
rising_sun13 Join Date: Mar 2009 Location: Tokyo Age: 39 Posts: 3 Trader Rating: (0) Feedback Score: 0 reviews	That would suck if its just air and the company couldn't even bleed the system.... oh well

03-01-2009, 10:03 AM	#6
codunc Zilvia Junkie Join Date: Sep 2006 Location: Denver, CO Age: 31 Posts: 316 Trader Rating: (2) Feedback Score: 2 reviews	You would be surprised how many people don't know the proper way to bleed a coolant system

03-01-2009, 10:46 PM	#7
Drftn93SR Join Date: Sep 2007 Location: Roanoke, VA Age: 33 Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	Just to warn anyone, it was JGY Customs, they took a year to rebuild an engine... and the rebuild it self seems ok (so far) but they did a shotty job putting it back in...

03-02-2009, 09:10 PM	#8
DCP94 Zilvia Member Join Date: Nov 2007 Location: Richmond Age: 32 Posts: 228 Trader Rating: (6) Feedback Score: 6 reviews	damn a year? hmm did they send you the same motor back? lol just kidding, but thats ridiculous that it took that long and they didn't even bleed the coolant..i'm sorry man better check over everything else again

03-03-2009, 08:58 AM	#9
godsmack Zilvia Addict Join Date: Feb 2009 Location: Allentown, PA Age: 36 Posts: 652 Trader Rating: (0) Feedback Score: 0 reviews	yes bleed your radiator. but something else to help while in traffic. if you can throw in an on switch on top of the thermo switch for the fans so you know that the fans will stay on while sitting there. if you do this just remember to turn the switch off eventually. lol

03-16-2009, 02:36 PM	#10
Drftn93SR Join Date: Sep 2007 Location: Roanoke, VA Age: 33 Posts: 33 Trader Rating: (0) Feedback Score: 0 reviews	Just wanted to show some closure... I hate when you read a thread and dont know if the issue is resolved... I bleed the radiator and it didnt fix the problem, what i did end up noticing is that my fans didnt kick on, which i didnt understand at first until i pushed on the fuse and they kicked on... i inspected the housing and noticed that it had actually been getting really hot, when i removed the fuse i could bend it! Im guessing it was getting to hot being tapped against my power wire comin from my battery from the trunk, so i replaced the entire housing and replaced the fuse and moved it off the power wire and i has been working like a champ ever since, i can sit in one spot and it never goes above 190F... Problem fixed... For now!