Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - just installed koyo radiator, question now.

niSm095 · 04-08-2007, 06:37 AM

thanks for the help everyone. To clarify a couple things, I'm talking about using the stock gauge, and "normal" temperature as compared to the stock radiator.

thanks for the info on the coolant temp sensor. Just to give you guys some more background as to why I changed out the radiator now. About a month ago, I had driven the car to work, which is about 8 miles away, 6 or so of it on the interstate. I got to work fine, then on the way home that evening (ambient temperature outside about 68) on the interstate, the temp needle on the dash starts going up. I pulled off the interstate, checked to make sure nothing was blocking the radiator, etc etc. Started the car back up after about 10 minutes, and only got about half a mile before it started overheating again, this time faster.

I parked it on the side of the interstate, came back the next day, quickly got the car home after it had time to cool completely, and decided to change the thermostat. I replaced the thermostat with a generic one I found at oreilley's, sealed everything up, refilled the fluid and bled the system. For the next week or so everything ran fine, I noticed that the needle on the temp gauge read slightly higher than it used to and attributed that to the thermostat having a higher temperature at which it opened. So, last saturday afternoon the car began overheating again. I got on the interstate about the same place I get off to go to work, cut the heater on full blast and managed to get home. At that point I found a new radiator and put it in this weekend. Anybody have any idea if there may be an underlying problem here?

04-08-2007, 06:37 AM	#11
niSm095 Zilvia FREAK! Join Date: Mar 2003 Location: S. Carolina Age: 39 Posts: 1,201 Trader Rating: (14)	thanks for the help everyone. To clarify a couple things, I'm talking about using the stock gauge, and "normal" temperature as compared to the stock radiator. thanks for the info on the coolant temp sensor. Just to give you guys some more background as to why I changed out the radiator now. About a month ago, I had driven the car to work, which is about 8 miles away, 6 or so of it on the interstate. I got to work fine, then on the way home that evening (ambient temperature outside about 68) on the interstate, the temp needle on the dash starts going up. I pulled off the interstate, checked to make sure nothing was blocking the radiator, etc etc. Started the car back up after about 10 minutes, and only got about half a mile before it started overheating again, this time faster. I parked it on the side of the interstate, came back the next day, quickly got the car home after it had time to cool completely, and decided to change the thermostat. I replaced the thermostat with a generic one I found at oreilley's, sealed everything up, refilled the fluid and bled the system. For the next week or so everything ran fine, I noticed that the needle on the temp gauge read slightly higher than it used to and attributed that to the thermostat having a higher temperature at which it opened. So, last saturday afternoon the car began overheating again. I got on the interstate about the same place I get off to go to work, cut the heater on full blast and managed to get home. At that point I found a new radiator and put it in this weekend. Anybody have any idea if there may be an underlying problem here?