scooterstang

i have an 88 mustang that still overheats. I have replaced the radiator with a ford racing aluminum 2 row radiator, went to a new t-stat, ran 80% water with a bottle of watter wetter. I also replaced the fan clutch about a year ago. The temp will continue to rise anytime im at an idle, or at a slow speed. Anytime i am at a faster speed it will cool down real quick.

The water pump was relpaced sometime before i purchased the car, but makes no noise and does not leak.

PRO50SC

Sounds like a fan/clutch problem. What temp is it running at?

mjr46

try more of a 50/50 or 60/40 mix of coolant vs water and possible replace fan clutch as Pro says

scooterstang

it'll continue to rise until i start driving faster to cool it down. i figured it was the fan clutch. Is there anything in particular i can look for?

PRO50SC

Well the fact that it cools as you drive says some type of flow problem. Make sure there is no debris in front of the radiator. You do have a shroud on it correct?

scooterstang

i just replaced the radiator sunday, there is no debris in front.

The only things that i can think of is the fan clutch, a head gasket or head bolt, or my water pump. i don't know much, so someone help me eliminate some of these

scooterstang

bump

MikeVa

Did you replace the radiator cap? Sounds silly, but a bad cap will raise the temp of the overall system.

tmajikman

It is the fan clutch or fan I bet.

scooterstang

yea i did replace the cap. Is there something real quick that i can look for to tell if its the fan clutch?