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2002 Ford Focus LX Base 4dr Sedan

2002 Ford Focus
Trim Info:
Front Wheel Drive, 4 Door Sedan, Compact
28 mpg city / 36 mpg hwy
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July 14, 2012, 3:36 am

Alex G

Question: Why the engine overheats on 110 km/h ?

Hi I have a Ford Focus 2001 /1.6 (Automatic,Zetec SE) and I have noticed that in the last couple of days on the highway if I push it over 100 km/h the engine temperature is rising suddenly to maximum .If i drop the speed below 100 km/h the temp. is dropping back to the safe zone.
I should mention that the cooling liquid is on the normal level,but I did find it one time on minimum (the first time when this rising temp occurred) .
And I had changed the engine oil 1 month ago I am using now Castrol 5w30 A1
I am wondering is it the cooling system pipes (probably stacked somewhere ) or maybe the new oil I am using causes the overheating or the Thermostat sensor (temp sensor)
I live in Cyprus (35-40 degrees Celsius)
Thank you in advance .

July 23, 2012, 6:10 pm

Ron W
Expert Mechanic

Have the cooling system pressure tested. If it was low, it may not be pressuring correctly. basically it doesn't work as well if it isn't pressurized. there may also be a restriction in the radiator or a weak water pump. Both could reduce the coolant flow.

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