98 cl with the 2.3 , has a very wierd problem , its overheating and it only happens when iam cruising , it will not overheat on idle or at a stop , both fan cycle , also check CO2 on the coolant with a block check and pass the test ,,, i have to turn the heater all the way to 90 for it to cool down


plz some helo with be greatly appreciated

 

sounds like a blockage somewhere(normally radiator) or water pump not working...instead of block test, compression test is more valuable

 

or a t-stat not opening all the way?

 

had same problem with my 97 turned out to be a clogged radiator the coolant wasnt going through all rows.