wax seal in the collant flow. it wears out ove time and needs replaced. Not a hard job. GOOD LUCK!
My mechanic (who I trust) replaced my O2 sensor and exhaust manifold and the problem went away.
Viscuous coupling in the transfer case has gone bad.
front pump or clutches more than likely its the clutches
ECM
blown head gasket
because the air warms as it moves down
under the back seat, dont try to rip the seat up cause its bolted down xx kitty xx (unbolts in the center)
Your body temperature (which is warm) warms the seat when you are sitting.
With those symptoms, you Need to check the fluids level, sound like it is low.
The fluctuating RPM in a 1993 Honda Accord until it warms up can be attributed to the engine's need to reach its optimal operating temperature. Cold engine conditions can cause the fuel-air mixture to be less efficient, leading the engine control unit (ECU) to adjust the idle speed to compensate. Additionally, components like the idle air control valve (IAC) may struggle to regulate airflow effectively until the engine warms up, resulting in unstable RPMs. Once the engine reaches its proper temperature, it generally stabilizes, allowing for smoother operation.
In the 2012 Honda Civic, the back seat does not fold down in the sedan model. However, the coupe version has a rear seat that can be folded down to expand the trunk space. If you need more cargo room, it's best to check the specific model type of the Civic you have.
The 1997 Honda Civic OBD 2 port is on drivers side,connector faces down