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Overheating At Speed

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#1 Danni68


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Posted 16 July 2021 - 05:34 PM


We have a 2006 grand voyager 2.8crd that will happily sit in traffic in hot weather but once you drive over 60mph the temp goes up quickly and you have to have the heat on and slow down to stop it overheating. It has had a new water pump and timing belt, new coolant tank cap and we have flushed the system a couple of time but still it does it. Any ideas why this happens?? Thanks in advance

#2 bignev


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Posted 17 July 2021 - 10:31 PM

Have you checked for crud build up on the radiator affecting airflow?
Or it could be that the rad is clogged up internally, despite the flushing.
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#3 Thun377


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Posted Today, 04:58 AM

Could be a thermostat problem and you may have to do the mod (video on you tube) its easy to do with the parts being cheap, it sorted all my temperature problems out, am hour well spent

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