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James J

James J 6/27/2019

2000 Honda CR-V SE 4 Cyl 2.00L


Over heating when idling but cools when engine is revving

I recently just did a coolant flush on my Honda crv when it is idling the temperature gauge raises up but when I revved it up the temperature gauge falls back down to normal temperature is this a thermostat issue?

1 Answer


Jimm 9/3/2019

First question - is the coolant at the correct mixture of 50/50 water and anti-freeze?

The fact that the car runs cooler when moving indicates that the cooling system seems to be fine with air moving across the radiator. Have you checked the fan fuses? With the car sitting especially if it is hot (ambient temperature) the fan(s) should be running - especially with a/c turned on.

Could be clogged coolant passages; (radiator, engine, heater core), or a faulty thermostat not opening enough - which can cause low water pump flow which doesn't let enough coolant through at low rpms.

Try these various on-line parts resources; www.autopartswarehouse.com; www.partsgeek.com; www.rockauto.com - to list only a few.

Thermostat = GATES part #33340S - or it's equivalent


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