Ford Mondeo II (1996 - 2000) - 98 2.5 Duratec - overheating.

Honest John Back Room » Technical matters
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Mon 27 Oct 2008 19:55
98 2.5 Duratec - overheating. - trigs
Hello all,
This is my first time on a internet forum so sorry if i make any mistakes.
I have a Mondeo on a 98 with a V6 duratec and up untill last week i have had no problems, then out of no where she starts to over heat, not a rapid rise in temp but a slow increase untill the fan kicks in, which has no effect. I thought head gasket, which i have changed (Needed a de-coke anyway) still overheating, checked thermosat which is fine. I have read that water pumps are poor on these engines any ideas anyone as i am out.

Edited by Pugugly on 27/10/2008 at 19:56

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Mon 27 Oct 2008 22:11
98 2.5 Duratec - overheating. - Screwloose

How well is the heater working? Can you get access to a laser thermometer?
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Tue 28 Oct 2008 08:45
98 2.5 Duratec - overheating. - trigs
have not checked the heater and what is a laser thermometer
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Tue 28 Oct 2008 09:14
98 2.5 Duratec - overheating. - Collos25
Radiator bunged up.
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Tue 28 Oct 2008 13:04
98 2.5 Duratec - overheating. - Screwloose
have not checked the heater and what is a laser thermometer


A laser thermometer is a very handy tool for checking water-flow. You point it's laser beam at the area you want to measure and read off the temp on it's little screen.

Cheap ones [sub £20] need to be held close and aren't terribly accurate - the good ones are something else.

Find out whether the heater is getting hot.
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Thu 30 Oct 2008 17:16
98 2.5 Duratec - overheating. - trigs
Found out what was wrong. Water pump impeller has broke away from shaft, common problem due to plastic impeller. Fitted new pump with metal impeller and all is well.
Thank you for all your suggestion
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Thu 30 Oct 2008 17:39
98 2.5 Duratec - overheating. - Screwloose

Not uncommon; that was why I asked about the heater.
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