I own a Ford Mondeo 1.8 petrol. The director gasket be just this minute fixed but overheats on longer journey?

It works fine on short journeys, but anything over nearly 40 mins and it overheats. If I slow down to below 50 mph the temperature assess drops back down. The adherent works really hard to cool the engine down as resourcefully. Why is this happening on longer journey and above a certain warmth? any suggestions gratefully received


Answers:    You need to transform your thermostat I have even see new thermostats that are defective, my best guess is that it is stuck fairly open. You should or the shop should enjoy flushed and inspected your cooling system. A poor head gasket repair will show up inside a few miles.
put a new radiator surrounded by it. it is most likely restricted.
Was the gasket fixed by a reputable garage? It could be that the 'fix' be a bad position.

Check the oil trilby for a greeny or creamy gunge, if it exists then it could be a sign that the headgasket is gone again.

It may also be the thermostat, or conceivably the radiator is broken.
i need a lil info i requirement to know if you ave changed the water pump and/or thermostat?
Have the radiator flow checked it may be moderately clogged or failing

1986 and up Fords started using a weird epoxy to gum plastic tanks onto radiators metal center cored nouns...

over time the epoxy goes desperate and starts to disintegrate... and cause a radiator problem...

I discovered this while I have the radiator out repairing the headgaskets on a 1989 Ford Taurus with a 3.8 liter V6...

I notice the radiator had a wan dry powdery substance at the tanks that looked approaching bee pollen

I took it to my Professional Radiator Shop to have them check it and they told me yep see lots of those going desperate that way....

they have an all metal better replacement for the astoniching wholesale price of $105.00 my cost...(dirt sheap)

my customer be thrilled to have a tentative radiator that reasonable and the coup¨¦ still repaired under $900.00 total,
parts, labor and contraption work...

Walt
ford not good buy chevy....
Not au fait with finicky model. Old Chrysler 225 engines used to run hot above 50mph if they had no thermostat or it be stuck open. Water moved too in a hurry all the time to verbs the heat. Even checked an iron by licking your finger and slapping the iron beside it. Sizzles the spit but it don't burn your finger because it's moving too fast! If you slowed to below 50 mph the temp would drop now. One other possibility, most of the newer cars have a specific radiator overrun proceedure. Some have bleed valve that must be open at the initial swarm or air will be trapped within the system. It looks full but the thing will get hold of red hot when you go down the road. Unfortunately copious "professionals" ignore this step and go and get to sell their customers another organizer gasket or engine. Try the high speed try-out again. You won't have to shift far and if you slow down it will probably cool down. If not, turn on the heater full blast and it will support to cool the engine. The thermostat has to cycle the wet. It lets it stir around contained by the engine for a little while to harvest the heat next it opens and sends the roast to the radiator. If it cools down when you slow down, you probably have a fruitless thermostat (stuck open). If it was stuck closed the vehicle would overheat sitting still at idle. The radiator be a good Idea because when you run it down the road a stopped up radiator cannot cool the marine and it gets hot faster. Of course you said that have been see to and no reason to suggest that's the problem now. Keep it full of hose down while you test it and don't forget the oven trick. Many of my customers have save their engines and head gaskets by rolling down the window and let the oven act resembling an extra radiator to cool things down. Good luck and post back next to updates.
sounds like a cracked herald, the head gasket undertaking didnt do the trick i would think it have to be a crack in the combustion chamber on one of the cylinders
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