2 things:
1st, Is the fan coming on?
2nd, if not could it be the temp sender failing? This happened to me and it was a faulty water temp sender thingy that tells the fan to come on at a
set temp.
the fan is permanently on unless i switch it off so no senders in the system to be faulty.
tis right annoying now! i should be out actually using some of the road tax i've just put on it but insted it's in bits in the garage again
if you just want to get it up and running, i've a 1.6 pinto that has never given me a second of trouble for 900 miles. fancy a straight swap?
sorry i couldn't be of more help, but from the other thread, i'm clean out of ideas. mine's piped up identical to pat's and
it'll run all day at 75/80 degrees. i had very siilar problems to what you describe when i had my header tank t'd into the manifold/heater
circuit, as it was pumping water into the bottle, thus forcing the air into the rad, so the fan switch wouldn't kick in.
hope you get it sorted soon
tom
Watch it everyone it's catching, my bloody water pumps started leaking! Good old Halfords unit, brand new 4000 miles ago!
is the head gasket gone and pressurising the cooling system..... I only say this due to the pipes being "like steel".
could also be that the water pump is not working properly.
i was suspecting the head or head gasket but it's taking a while to pressurise so i'm very doubtfull of it being that now.
just got back from the local raditor guy and he can make me a custon "race spec" raditor that he swears will cure the problem.
just gotta hope a 17x19 rad will fit in without having to mod too much!