Engine Temp Staying at Running (1 Viewer)

[schmeb2000]

Hello,
I’ve noticed that after driving my 100 series the engine stays warm for extended periods of times after turning it off. It stays at the running temp (180 degrees Fahrenheit) for maybe 30 min to an hour. I just replaced the thermostat and it has plenty of coolant. I need to do the timing belt in the next 20k miles and will do the water pump at the same time. Should I do this sooner or is this normal?

 

[Foehammer]

The cast iron block retains heat better than aluminum blocks, this making it longer to cool off. I wouldn't chalk it up to anything bad if it's holding good temps and your coolant levels are good.

 

[schmeb2000]

The cast iron block retains heat better than aluminum blocks, this making it longer to cool off. I wouldn't chalk it up to anything bad if it's holding good temps and your coolant levels are good.

Yea coolant stays good no leaks or anything and it doesn’t chug through it.

 

[2001LC]

Engine coolant temp within block, goes up, just after engine shut down. Then drops over hours. How fast it drops, depends on OAT. But as rule of thumb, cool down takes 8 hours.

That's why I always say, let cool down overnight. Then check coolant level under radiator cap, before sun up.

 

[schmeb2000]

Engine coolant temp within block, goes up, just after engine shut down. Then drops over hours. How fast it drops, depends on OAT. But as rule of thumb, cool down takes 8 hours.

That's why I always say, let cool down overnight. Then check coolant level under radiator cap, before sun up.

Just checked, the radiator had normal levels but the overflow was low. I've only driven it for two days after draining and refilling the coolant (no flush). I filled the overflow to max and in the two days it was at the low level. Not sure if this is something to worry about or if its just the rest of the air getting worked out. When refilling the air was already mostly let out so I'm not sure if its burning through it like no other or if its just normal after this.

 

[2001LC]

Sounds good.

Best park with front end higher than rear, at minimum on level ground. Check under radiator cap in the morning before sunup and sun heats the air.

 

[schmeb2000]

Sounds good.

Best park with front end higher than rear, at minimum on level ground. Check under radiator cap in the morning before sunup and sun heats the air.

Will do that. What should I look for?

 

[baltistyle]

You’re doing it right. He is underscoring that it takes multiple drive cycles with full cool down before the air is out, and that parking on an incline helps in the process. Just go back to it when cold for the check. Also make sure you are opening your front and rear heating circuits.

 

[Eyedaho]

You’re doing it right. He is underscoring that it takes multiple drive cycles with full cool down before the air is out, and that parking on an incline helps in the process. Just go back to it when cold for the check. Also make sure you are opening your front and rear heating circuits.

There are no heater valves in our vehicles, so turning on the heat is not necessary on 100 series.

 

[schmeb2000]

You’re doing it right. He is underscoring that it takes multiple drive cycles with full cool down before the air is out, and that parking on an incline helps in the process. Just go back to it when cold for the check. Also make sure you are opening your front and rear heating circuits.

Thank you for the info. Yes everything is all good now just got worried that it might be running hot. Thank you

 

[schmeb2000]

There are no heater valves in our vehicles, so turning on the heat is not necessary on 100 series.

Thank you

 

[baltistyle]

There are no heater valves in our vehicles, so turning on the heat is not necessary on 100 series.

Gotcha, I never realized that this vehicle didn’t have a heater control valve. I’ve just done it this way on every vehicle I’ve had, including 2 100s. Did a little research and I think it’s interesting that this is based on air flaps moving if I’m understanding, right. Is the hot coolant really flowing through the front heater core and the rear heater core all the time?

 

[Eyedaho]

Gotcha, I never realized that this vehicle didn’t have a heater control valve. I’ve just done it this way on every vehicle I’ve had, including 2 100s. Did a little research and I think it’s interesting that this is based on air flaps moving if I’m understanding, right. Is the hot coolant really flowing through the front heater core and the rear heater core all the time?

Yes, it's flowing all the time. I'm also used to turning on the heater(s) for flushing/air purging. It certainly won't hurt anything on the 100 series, but isn't necessary.