Rep Power: 0

I just replaced my head gasket for the second time because I kept loosing coolant. Today was a really hot day and I was sitting in drive through and the fan didn't turn on until my temp gauge was at 3/4. It does turn on eventually but I don't like seeing the needle go that high. I have a OBD2 tool that tells me it doesn't go on until my coolant gets to 230-235F. I've taken the connector off the sensor and stuck a wire in it and the fans turn on. For some reason they just turn on really late. I replaced the sensor about a year ago because my fans were not kicking on.

Anyone ever have this problem before? I'm letting the car cool down right now so I can open the radiator cap and see if maybe its low on coolant. I really hope the head gasket didn't go again. I changed the headgasket on saturday and sunday but this week so far I haven't driven that far and today on thursday I sat in drive through and saw it. I also had my A/C running at the time so I don't know if that has anything to do with it.

 
Rep Power: 222

Did you use an OEM sensor?

 
Rep Power: 210

Try replacing the radiator cap (Honda genuine only). Is the reservoir gaining coolant?
While you're looking inside the radiator with engine running...rev the engine a note the coolant flow to rule out a water pump issue. Also, get a high temp thermometer and insert it into the radiator neck for a true temp reading.

 
Rep Power: 0

I got the sensor from autozone. i don't remember the brand.

 
Rep Power: 0

The radiator is only 3 months old. The cap came with it. On the coolant line that feeds my heater core I have a filter that is clear and I can see the coolant flowing when i turn the heater on so I think I have water pressure. One thing I did notice was that my thermostat is missing that little brass piece and just has a hole in it.




With the thermometer I'll have to get back with you on that because I don't have one so I'll have to go pick one up.

 
Rep Power: 222

so that's a no,
probably needs the proper one