ukv894

Overheating problem, any ideas?

1995 ford f150 5.8

Flushed cooling system 3 times, with a water hose hooked up to any port possible only allowing one open port for pressure to build. Blew tons of crap out.

replaced:

fan clutch
thermostat 160F
water pump
coolant; tested for -30F

added 10" electric fan to radiator

100% full tune up all around the truck.
No check lights, truck seems to run nice and has great power.

texasedition

Try a new radiator lol. Did the water pump spin nice and easy?

ukv894

I do not suspect the radiator in the least.

The water pump seamed find when I bought it. And spun nice. Water flow is felt by hand gabbing the top radiator hose during running.

texasedition

Well. That and the water pump are the only things really left. Just caused it was flushed well doesn't mean it still doesn't have clogs in it. Does it lose any fluid?

texasedition

I wonder if there is a clog in the block

ukv894

I am wondering the same thing. The heater core was clogged; and I flushed the junk out of it. I did flush what I could out of the block.

I am searching for a block cooling port schematic to see if I can tell if a clock would happen, and if so were and how if it would make it over heat.

ukv894

http://sbftech.com/index.php?topic=4912.0

texasedition

Are the freeze plugs still in the block?

dennism

Hi I have a 1995 F150 5.0 and a friend who also had a 1994 F150 5.0
and their Ford van with a 5.0 all had an overheating issue did the same as all
the other people posted above ,thermostats of all kinds and coolant flushes and still no resolve until a buddy of mine got me a can of K & W block seal orange can sold at parts stores it worked for me all of these motors are high miles trucks no more over heating.