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Ford Fiesta Zetec engine, year 2000. overheats after getting up to temperature, stays on normal for 1-2 kilometers, then gauge shoots over to the red. I stop, can hear water bubbling, wait till it cools and back to normal reading, goes 1-2 km then does the same. Ok going downhill and ok mostly on the flat. Have had head gasket changed, fan, thermostat. The car doesnt lose hardly any water. The garage say they need to change a sensor on the Air conditioning unit.

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  • honeymokey
    honeymokey May 23, 2011

    Be sure the engine is full of coolant, sound like all of the air is not out of it. You may hav to disconnest the small hose by the thermostat housing to get all of the coolant in .

  • JOCK WHYTE Jun 01, 2011

    Thank-you honeymokey, it seems there was an airlock. We drained the coolant, then re-filled it with engine running. Then drove it quite hard up and down some hills and so far all is ok. Thank-you very much for your advice.

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  • 26 Answers

1. Check the radiator cap.
2. Check the reserve tank, whether water level is maintained or getting filled. If it's getting filled, there should be a leak in the radiator or gasket

Posted on Jun 13, 2017

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

SOURCE: 2004 ford ranger. temperature gauge

is the coolant flowing thru the radiator check bottom hose should be same temp as top hose if not could be clouged radiator or week water pump

Posted on Jul 27, 2008

  • 46 Answers

SOURCE: 2000 Honda Accord - engine overheats when stopped

There are only a couple things you can check. First, I would make sure the gauge is reading properly by checking the fluid temperature manually. Newer model cars have temperature sensors that can malfunction but they will usually set your check engine light off it that is the case. Check your radiator fluid. While the engine is cold!! See if it looks dirty. Rub it between your fingers and see how viscous it feels. Make sure the radiator is full. You may just need to get your radiator flushed. A lack of flow will cause an overheating condition. When your back in motion the engine has more pressure to circulate the fluid. When the car is moving there is airflow that also aids in the cooling process as well. Other than that you have a thermostat which could be sticking and causing it to overheat. Or the water pump is bad. A flush and fill and replacing the thermostat are fairly cheap and usually a lot easier to do than replacing the water pump. Especially on a Honda. Usually you will hear a squealing noise if your water pump is going out and there is, I think it is called a weep hole on the pump itself that will start to leak when the pump is going bad.

Posted on Oct 06, 2008

autodr
  • 260 Answers

SOURCE: EXHAUST LEAK INTO COOLING SYSTEM?

i assume its a 4 cyl?? will this car ever overheat if just sitting idle? when it begins to overheat, hows the heat in the cab? sounds like maybe the radiator is partially clogged or restricted somehow. i would change the radiator cap and make sure the overflow is set to proper level. (incl. radiator level) i wouldnt jump to headgasket just yet, they are pretty durable from what ive seen

Posted on Dec 16, 2008

  • 1 Answer

SOURCE: BMW 318 i se M43 engine

dounds like maybe your thermostat is not openin properly. maybe slightly but not all the way . i had the same problem a year ago!

Posted on Jan 24, 2009

  • 1214 Answers

SOURCE: 98 328IS OVERHEATING AFTER CHANGING THERMOSTAT

Are you putting the thermostat in correctly? It it will not work backwards.

And to confirm that there isn't a different problem, take the thermostat out all together and see if it overheats.

Engine not fully warming up is not usually caused by the thermostat. Stats usually fail closed, not open.

You will want to check the water temperature sending unit or gauge after verify the water temperature with an external calibrated thermometer. You can attach and insulate the external thermometer to the housing where thermostat is located.


Reply back what you figure out. I will be happy to help you further.

Posted on Feb 03, 2009

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