robthedoc
civic disobedience
- Joined
- Feb 14, 2013
- Messages
- 1,533
Hi guys I'm having an issue with the expansion bottle filling up and the car running slightly higher temps, about 96-99 degrees. It doesn't over heat but definitely runs hotter than I would like. When the bottle fills up it doesn't go back down when the engine cools down, like right down over night. I'm thinking/hoping that the rad cap might be faulty? seems to be when temps go up and pressure rises coolant expands out into the bottle but when temps reduce the coolant is not taken back into the radiator this causing the coolant level to be lower than it should be... runs hotter? If I pour the coolant out the bottle back into the rad it runs cool again until it gets driven aggressively. Has anyone had anything like this before? Its a mishimoto radiator. Maybe also worth saying the temp gauge on the dash seems to be a bit unstable seems to rise and fall quite a bit. Seems to drop under boost?
Please don't say head gasket
Please don't say head gasket