View Single Post
  #27  
Old 10-31-2017, 06:18 PM
ROLLGUY's Avatar
ROLLGUY ROLLGUY is offline
ROLLGUY
 
Join Date: Oct 2007
Posts: 7,260
Quote:
Originally Posted by 97 SL320 View Post
Pull the radiator and have it rodded out, it is clogged. When driving up a hill, there is more heat to reject from coolant, the clogged rad is just too "small".

The upper and lower should feel about the same temp when the engine is fully warmed up, ( like after a drive ) . This test is also valid for a heater core however a clogged one won't cause your problem.

Also, the fan clutch isn't the problem because the lower hose is very cold. If the fan wasn't working the lower hose would be nearly as hot as the top.
First of all, these radiators cannot be rodded out. Second, it is a new radiator (third post).
Reply With Quote