Overheating

GARETH RENNIE

MEMBER
2014 FORD ECOSPORT
1.0L
3 CYL
TURBO
2WD
MANUAL
67,000 MILES

Car listed above uses petrol.
Vehicle keeps overheating. This has been a recurring problem for the last month with numerous back and forth to mechanics. The summarized version of the problem is:
While driving: temperature warning light comes on, the heater blows hot air but then air cools but keeps blowing through at same intensity.

Car stopped:
-Coolant boiling.
-Fan working extremely hard.
-The pipes all hot except the bottom radiator pipe which is cool and soft.

Just collected from mechanic who did full service; did pressure test, checked water pump, replaced head gasket, coolant reservoir; and thermostat.

Six months ago was in an accident which damaged the whole front of the car. The radiator and fan etc. Was replaced.

Any help would really be appreciated.

1 Reply

SCGRANTURISMO

MECHANIC
4,897 POSTS

Hello,

This sounds to me like you have an air pocket that is not allowing the coolant in the system to circulate. When you fill your cooling system is has to be filled at the highest point in the system or an air pocket will get into the system, not allowing the coolant to properly circulate, causing everything that you described to happen. I have a 1997 Ford Mustang GT with a 4.6L engine and when filling my cooling system this is how I do it.
I take the top cooling hose off of the thermostat neck(or where the radiator hose connects to the engine at.) This is the HIGHEST POINT of the cooling system. I hold the hose up in the air to ensure that it is the highest point of the cooling system and fill the system witha 50/50 mix of coolant and water. I continue to fill until the coolant runs out of the the thermostat neck where the upper radiator hose connects to the engine. I now know that the cooling system is completely filled with coolant and there are no air pockets present. I reconnect the upper radiator hose to the engine and clamp it in place. How do I know there are no air pockets present. Simple. Liquid MUST go to the lowest point possible, so when it comes out the top of the system, it has pushed all the air out of the system. Try this and get back to us with what you are able to find out, please.

Thanks,
Alex
2CarPros