My basic 2007 Honda Fit is over heating. I have replaced the radiator, timing belt, thermostat, both temperature sensors, and water pump, all with Honda factory parts purchased from the dealer. The car is still overheating. Does anyone have any ideas as to what could the problem be? It does not yet appear to have a blown head gasket or cracked head or block. Any suggestions?

 

You may have an air pocket in the cooling system.... Try burping the baby by finding an area where you can park where the left front of your elevated and the radiator and cap is higher than the rest of the system... Crank the engine up and let the engine run at an idle the radiator cap removed until the cooling fan as kicked on once or twice and the water level at the cap should go down and you can add more water.. If you have someone sit in the car to rev the engine to 3000 RPM, so that coolant will be pulled from the radiator and into the engine so you can add coolant to the top of the radiator before replacing the cap... I have had the same problem on other cars and since I have always parked with the front of the car raised high when adding coolant.

 

Have a local mechanic do a head gasket test. It's easy for them and requires a little pump and some special fluid. If that comes up negative, radiator.

 

We had a car overheating and tried to burp, flush etc but ended up replacing radiator and it fixed the issue.

 

I replaced the radiator last month with a new Honda radiator. Is it possible to get a bad radiator?

 

Argh I didn't see you had replaced the radiator. Do you know if the hoses were replaced and or the rad cap?

 

First and foremost, was the coolant for the cooling system ever replaced prior to the overheating and what was its level when cold? Its usually recommend by Honda to have that taken care of ever 60k miles or 5 years; which ever comes first.

Secondly, the Fit doesn't have a timing belt, it has a chain. If you paid for a timing belt (and not a serpentine belt) you got ripped off.

Did you get the radiator pressure tested prior replacing it? Did you ever pressure test the radiator cap or check the thermostat's and fan's state of function prior to replacement?