radiator fan on start up?

[chasingomas]

Last question thats kind of left field. Is replacing the entire engine harness as easy is unclipping everything on the old and clipping in the new?

 

[Miltoid]

Turning the heat on doesn't do anything for burping air out of the system, so forget about roasting yourself in summer time.

Thermostat has nothing to do with fan activation. The temp sensor detects hot water independently of thermostat operation. Thermostat only exists to allow cooled water from radiator to enter the engine block.

There is a strong possibility of trapped air within the system. If you saw the white smoke coming out of the tailpipes, your engine has a blown head gasket and may already be ruined and need of a rebuild. If the white smoke came from under the hood, there's a chance that boiling/overflowed coolant simply leaked onto something hot like an exhaust manifold.

Chasing any remaining air out of the coolant system should be the current focus. Taking the car to a shop with a professional OBD Sanner to run a test of the coolant fan should also be a high priority.

The first that came to mind for me was also the head-gasket, If you rev it up cold and see bubbling and turbulence in the coolant you may have a problem.

 

[chasingomas]

The first that came to mind for me was also the head-gasket, If you rev it up cold and see bubbling and turbulence in the coolant you may have a problem.

hey thanks for communicating. will do today to double check

 

[chasingomas]

ccrm went in today. too exhausted to even test. replacing the coolant temp sensor in the morning and praying to god overnight.

 

[SnakeBit!]

I did not read through this entire thread, however, in case not mentioned, fan doesn't come on with the ignition unless the a/c is on. otherwise, the fan comes on once the car gets to operating temp and the temp set in the ECU if changed from stock.

 

[chasingomas]

I did not read through this entire thread, however, in case not mentioned, fan doesn't come on with the ignition unless the a/c is on. otherwise, the fan comes on once the car gets to operating temp and the temp set in the ECU if changed from stock.

understandble lol! wasn't turning on with a/c. replaced ccrm and replacinggg coolant temp sensor cause I was being a detective. Thanks for saying it plainly too