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xbucux 11-13-2011 01:17 AM

2000 GC 4.7 2wd

After about 10 minutes going 65-70 mph on the freeway, my temp gauge rises to the line after 210 degrees. It stays there for about 5 minutes then drops back down to 210.

What could be causing this?


hoffmanestates 11-13-2011 11:00 AM

Re: Temperature
My 4.7 runs 210 all day idk if its suppose to..shortly afterthat now I'm looking into why cylinder #8 is taking on coolant.I found my radiator LEAKING Thermostat really flimsy.air in cooling system

Frango100 11-13-2011 07:34 PM

Re: Temperature
Its most probably the thermostat which is sticking somewhat. You could try a new one and see if that changes anything.

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