Driving along and my temperature gauge rises to hot. Sometimes it the temp. will drop on the gauge, some times it won't.
Honda Q&AAsk Your Question
2002 Honda Civic Si Question: My temp. gauge climbs to HOT; not sure what to replace - Thermostat or Fan relay
Answer #1Greg's Orange Auto (14262 Answers) , Orange, CA - (714) 361-9386globalhelper September 17, 2013, 12:42Master
does the fan work? if fan works relay is good
Answer #2goodguy September 18, 2013, 03:55Master
I would try changing the t stat if that doesnt work then I would check the head gasket
Answer #3ziptie12 September 18, 2013, 09:48Master
Have you checked the coolant level (cold), in both rad. and reservoir?