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

 

[chasingomas]

hey y'all; fan still wont turn on. I've replaced the coolant temp sensor, the ccrm, thermostat, hoses. Relay was checked and good. when electricity went through the fan from the battery directly, it spun. What am I missing y'all? feeling super dejected but determined i guess

 

[chasingomas]

hey y'all; fan still wont turn on. I've replaced the coolant temp sensor, the ccrm, thermostat, hoses. Relay was checked and good. when electricity went through the fan from the battery directly, it spun. What am I missing y'all? feeling super dejected but determined i guess

the pigtail connector to the sensor seems a bit damaged and I got a new one to replace it; could this be causing the issue? Weird that it still isn't turning on for a/c I'd assume

 

[ttocs]

yes if the harness has got hot enough over time it can cause a bad connection.

 

[chasingomas]

yes if the harness has got hot enough over time it can cause a bad connection.

and this would affect the a/c being able to turn on too? I'm still learning

 

[chasingomas]

fixed the connector. still no fan. stumped!

 

[ttocs]

did you ever check the fuses? Last I saw you were getting the energy to do it. Both under the hood and inside, check them all.

 

[chasingomas]

I checked the one under the hood. Is it supposed to be a 40 or 50? and I didn't check the one on the inside, will check.

 

[chasingomas]

I checked the one under the hood. Is it supposed to be a 40 or 50? and I didn't check the one on the inside, will check.

can't find the one in the cabin, the fan relay in the shopbook says 50, while the one in my car is 40, would that cause issues?

 

[chasingomas]

can't find the one in the cabin, the fan relay in the shopbook says 50, while the one in my car is 40, would that cause issues?

found the one in the cabin, checked it; it's good.

 

[ttocs]

it seriously takes less time to pull and inspect each fuse than it does to look through the book and then we can be sure they are all good. Some circuits feed multiple things.

 

[chasingomas]

it seriously takes less time to pull and inspect each fuse than it does to look through the book and then we can be sure they are all good. Some circuits feed multiple things.

will do. replacing the 40 amp fuse with a 50 amp from o'riellys should be ok? The manual says it should be a 50 but a 40's in the car

 

[ttocs]

if you are sure you have the right fuse, then go ahead. Otherwise it is a bad idea to upgrade fuse ratings on your own.

 

[chasingomas]

if you are sure you have the right fuse, then go ahead. Otherwise it is a bad idea to upgrade fuse ratings on your own.

I'm sure I have the right fuse. I have the shop manual and all the other ones match but that one. But could that cause the fan not turning on?

 

[cobrajeff96]

Probe the black wire on the harness to any ground, listen for the beep.