Originally Posted by
RSMK4TURBO
Changed fan switch and does the same,it's has if once idling stationery the coolant is not being pushed around the system enough. Water pump is new and car is 1.8zvh. Is the standard cvh water pump upto the job?
are there any mods done to the cooling when being converted to zvh that may cause a restriction in the system?
My sons ST170 engine did something similar again with a newish water pump. Turned out to be the impeller on the pump wasn’t tight on the shaft.