Cooling question

[LittleD]

So yesterday i took a trip down to New Britain and noticed the jeep was running hot when i was at a constant 65/70, but when i slowed to around 50 and cranked the heat, it went right back down to 210 where it normally is.

A colder thermostat wouldn't help in this case would it? any ideas before someone says "don't drive 65/70"?

[ninetysix-ex-jay]

When you put the heat on it removes engine heat because the coolant goes through the heater core and removes the heat into the cab. Did you put the heat on around your cruising speed? Sounds like you need a radiator flush

[LittleD]

Staying at 65/70 with the heat on did absolutley nothing. only when i slowed down it cooled off. And i know how it all works, just wondering why it only worked at a slower speed

[ninetysix-ex-jay]

Less heat due to less power strokes per second. Still think you should do a radiator flush

[Ruepart Hoaxley]

Less heat due to less power strokes per second. Still think you should do a radiator flush

This.

Just flush it anyway, good practice to do it occasionally.

[LittleD]

I deff gonna do a flush, it's prolly full of shit from when the coolant bottle exploded and had to run it on pretty much no coolant

[ninetysix-ex-jay]

If that's the case I would do the flush and if it continues I would replace the pump

[crosbike]

what kind of thermostat do you run? i ran a failsafe and it failed within 200 miles and at higher speeds my jeep would get hot cuz the coolant would flow too fast. look into that too perhaps