Why does my coolant temp when driving highway speeds drop down to near cold? Not all the way cold but it will drop alot

Asked by Nov 01, 2015 at 05:18 PM about the 1983 Chevrolet C/K 10

Question type: Maintenance & Repair

At idle it runs at 195 just fine. just
when driving freeway speeds. (55-
60mph)

2 Answers

42,815

Either your thermostat is stuck open, or someone removed it altogether.

1 of 1 people found this helpful.
85,675

You need a new thermostat.

1 of 1 people found this helpful.

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