Rep Power: 0

Hi,

My dependable 1992 Civic CX has overheated twice on 30 degree mornings. I have a 30 mile commute and both times it has overheated the cabin heat is very low (fan on high, temp at highest setting barely warms me up). The car runs just fine but then overheated at the 25 mile mark.

When it happened the first time I filled the radiator with about 4 cups of water, then took it for a test drive (no overheating) and put a piece of cardboard under the car to check for leaks, no leaks. Happened again on the way into work this morning but I haven't checked the radiator levels again.

In reading online it looks like my coolant mix is probably incorrect which is leading to some of the coolant freezing in the radiator. Do you think a system flush and proper coolant refill will help with this situation?

Thanks In Advance,
Ben

 
Rep Power: 192

Yea its probably incorrect. If your using cups to fill the radiator your probably using tap water which has minerals and will grow on the inside of everything coolant flows through. Try to flush it and see if that works. But if you have a lot of that mineral it might have messed up your thermostat and beginning to lock up your water pump. It clogs the inside so coolant can't flow freely.