Quote:
Originally Posted by Dunk
31, that could be my issue with the 48 Merc 59AB. Finally found a temp sensor that worked after changing both water pumps. Have old 180 in there and temp gage goes 3/4 then higher on idle. I understand 160 stats send gage to 1/2 if cooling system OK. Car has 2000 miles on total rebuilt engine, bored +60 in 1975. Did notice recently that radiator is hot at top and NOT hot at lower hoses. I'm flushing with Thermo-cure and installing 160s. If that doesn't do it.... I'm in trouble. This is a 990 point Dearborn car. Anybody wanna jump in on this?
|
I would not change the thermostats, unless they are hanging up (not opening).
It is very unlikely they are the issue. Thermostats determine the lower end of the operating temperature (in this case 180) not the upper range. That is determined by a lot of factors listed in previous post.