Guidance/advice needed here:
I have Honda civic exi 2006 ---- having couple of issues,
1) Temperature Guage:
when the car is idle, say at a toll plaza, the gauge starts going up (it even touches H), but when the car starts moving, it comes back to normal. (There's no sign of overheat)
2) Coolant decreases:
Travelled motorway ( round trip 500 km),
After reaching the destination (without A/C), checked coolant level next day early morning, had to pour 1/2 liters coolant in radiator+ reservoir bottle was below minimum.
After reaching back to home (with A/C), heard boiling sounds from reservoir bottle -- let the car cool down, than pour water in reservoir bottle which went below minimum.
Have got radiator serviced+ all relevant pipes checked --- No visible sign of any leakage --- Radiator cap replaced couple of months ago.
Help would be appreciated.
Thank you.
