Veteran Ford Member
Join Date: Jan 2003
Location: Melbourne, Australia
Re: Cooling systrem: Whats causing this?
Check the thermostat firstly.
I jumped the gun when mine over heated last week, thinking a 2 month old thermostat couldn't be faulty, ripped my radiator out for no reason at all.
If you think the radiator is suspect get the end tanks taken off and rodded.
How to's eh?
Thermostat check/change - this is a piece of piss. Take off the two upper thermostat housing bolts. You'll get a bit of coolant leakage. Save it if you can. Pull the thermostat out, chuck it in a pot of boiling water, should open up. If it doesn't open or it's stuck open, get a new one, a 92 degrees one. Scrape any of the remaining gasket off, replace the gasket (or use gasket goo as I do), whack the new thermostat in and do the bolts back up to 20nm (I guestimated in lieu of torque wrench).
Removing radiator/cooling system flush - remove lower radiator hose from the radiator (or you could do it at the water pump but coolant all over your alternator probably isn't good. If you're not using new coolant retain the coolant.
Undo the clutch fan, 32mm reverse thread, it can be tricky (read; I can't get the fooker off!). Undo the fan shrowd screws, take the fan and shrowd out.
Undo upper radiator hose, side tank hose, the hose running to the top of the coolant tank and the auto cooler lines (if it's an auto). Undo the radiator bolts and lift the whole thing out. Get it checked/give it a half arsed flush with the garden hose. I wouldn't bother trying to rod it yourself, but I'm sure many people do.
You could go about flushing it numerous ways, this is what I did;
Remove the upper thermostat housing and thermostat. Chuck garden hose in the thermostat housing, turn on. Open the heater tap (I turned the ignition to on and ran the heater). When the water runs clear from the bottom radiator hose, turn it off.
Refiting is the reverse of removal.
Cooling system capacity is 15 litres, however there's 5 litres or so you can't get out of the block. For this reason, when refilling with new coolant, pour about 5 litres of coolant in first, then top up with water until you get to the full line on the coolant tank.
Turn the engine on, run the heater. Turn engine off, refil if needed.
Presto, in a nut shell. Though it always ends up being harder, I had to cut my lower radiator hose to get it off and the side tank hose wasn't much fun getting back on.
Water pump removal - I haven't actually done this myself (need the fan off/uni joint for the socket kit/decent angled ring spanners). With the fan off and radiator out; remove lower radiator hose from water pump. Remove the drive belt. Undo the 4 bolts on the face of the water pump. 10mm IIRC. Simply pulls out after that. Replacing is the exact reverse. 20nm on the 4 bolts.
Last edited by psycho chicken; 03-03-04 at 06:46 AM.