overheating on the highway

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05-22-2003, 01:08 AM

yomammaZ

Guest

Posts: n/a

overheating on the highway

Do any of you guys know what might be causing my Z to run really hot on the highway? As far as I know, there are no leaks in the cooling system. The car does have the original water pump and radiator, however. The fan clutch is brand new too.

thanks

05-22-2003, 09:07 AM

icice9

Super Siver & Black Stud

Join Date: Apr 2003

Location: Hayward Ca

Posts: 1,526

you might need to change your thermostat... its not opening at the right temp and might cause it to overheat....

05-22-2003, 10:43 AM

lifegrddude

Externally Wastegated

Join Date: Oct 2001

Location: San Diego

Posts: 1,220

If the above doesn't work, check the pump and then the radiator. My Z had a bad radiator when I first got it. Took 5 hours to get home instead of 40 minutes! When I replaced it and took a look in the old one... Oh man, the amount of stuff on the inside was frightening.
John 82ZXT

05-28-2003, 09:58 PM

duckyz

Registered User

Join Date: Jun 2002

Location: Alameda, CA

Posts: 903

You might want to replace the upper and lower radiator hoses as well. Mine had the same problem. I found out that the upper hose, connecting to the thermostat, was weak and collapsed after a few minutes when the motor was up to temp.