importedboi

I have a 1988 rx7, cruising the temp gauge stays at quater way. When i start smashing on it it starts to go up past halfway. If I start going fast like full throttle second and third thats when it starts to past the halfway mark. It mainly happens when I stay in boost to long in any gears. Is this normal or should I start upgrading my cooling system?

cdaleracer669

iTrader: (1)

check coolant level?it runs hotter when its getting low. radiator fins clogged up or bent all kinds? anything past halfway is too hot.

NZConvertible

Unless you have a very powerful modified engine, no it's not normal. The most likely causes are low coolant level caused by leaks (but that should sound the warning buzzer), a stuck thermostat, low system pressure from a faulty radiator cap or a clogged radiator (either clogged tubes reducing coolant flow or clogged fins reducing airflow. It's not the fan because it only heats up under load.

A good start would be to use a chemical flush on the cooling system, and a refill with a fresh coolant/water mix. Install a new thermostat and radiator cap from Mazda at the same time.