Time to change your coolant

[GNRick]

Check your coolant with a voltmeter and report back.....

 

[GNRick]

Hey when you guys drain your coolant do you open the stopcock and let the car run so the water pump will pump out all of the coolant? Would that be ok as long as you watch the temp. gauge to make sure it doesn't over heat? On my 2002 Sebring I disconnected the upper hose and let the car run. I couldn't find the stopcock and it was too much work to access the lower hose.

 

[MeanBuicks]

Depending on where the temp sensor is on an engine, you may get a false reading. It's designed to measure coolant temp but once the coolant evacuates away from it, it becomes an air temp sensor in there and it will fool you.

 

[GNRick]

Depending on where the temp sensor is on an engine, you may get a false reading. It's designed to measure coolant temp but once the coolant evacuates away from it, it becomes an air temp sensor in there and it will fool you.

The temp. sensor on the Sebring is where the upper hose connects to the bleeder valve. So if the water pump is pumping coolant up to the upper hose then it might be ok to do it this way? I could tell the coolant was being pumped out of the upper hose with the motor running. I think I should have let it run longer.

 

[T- Type Tim]

I run a sacrificial anode
Will be interesting to see how mine reads

 

[chopped39]

I drain the system and add water with a good biodegradable flush and let it run up to temp for a while and then pull upper hose and let it run with the garden hose in the rad inlet until clear. I always try to get to the lower hose or block plugs to get as much water out as possible.

 

[John Larkin]

I would say draining with the lower hose disconnected is just as effective as running the water pump. Once the water level goes below the pump inlets, there is nothing to pump anyhow. There might be a quart left in the block below the WP holes. It gets narrow down there.