View Single Post
  #6  
Old 01-10-2013, 08:25 PM
Droptop85 Droptop85 is offline
Officially Welcomed to the 'Fest
Location: Fresno
 
Join Date: Oct 2011
Posts: 351
Mein Auto: 03 Z4 3.0i
These cars have a fail safe thermastate. Once the thermastate reaches a certain amount of high psi it is forced open. This explains the engine overheating and then cooling down a bit. I would replace the thermastate, water pump, and exansion tank at the same time as these typically all fail at the same time.
Reply With Quote