Only Drained 90oz Of Coolant Topic is solved

[Oka]

maybe the thermostat isn't opening.

What if I remove the thermostat and refill the coolant. Yes that could be lots of work but at least that would be a process of elimination.

[oragex]

The thermostat usually fails in slightly open position so there should always be fluid inside the hose, with an air bubble at the top. Try filling a little more the coolant tank, above the max line - watch carefully as it warms up so it doesn't overflow. If you need later on to remove coolant, may use a turkey blaster or just lift the tank and drain a little - must disconnect the level sensor connector before lifting the coolant so as not to damage the sensor

The coolant tank also must keep some pressure inside with the engine fully warmed up. Sometimes the cap seal will leak pressure, or the clamp at the small return hose may not be tight enough

[Oka]

The thermostat usually fails in slightly open position so there should always be fluid inside the hose, with an air bubble at the top. Try filling a little more the coolant tank, above the max line - watch carefully as it warms up so it doesn't overflow. If you need later on to remove coolant, may use a turkey blaster or just lift the tank and drain a little - must disconnect the level sensor connector before lifting the coolant so as not to damage the sensor

The coolant tank also must keep some pressure inside with the engine fully warmed up. Sometimes the cap seal will leak pressure, or the clamp at the small return hose may not be tight enough

I filled the tank to the overflow hose level. I would think since the tank is higher than the radiator upper hose, that gravity would send the coolant into the upper hose. The tank cap seem to close pretty well - "tight enough".

[jonesg]

The thermostat usually fails in slightly open position so there should always be fluid inside the hose, with an air bubble at the top. Try filling a little more the coolant tank, above the max line - watch carefully as it warms up so it doesn't overflow. If you need later on to remove coolant, may use a turkey blaster or just lift the tank and drain a little - must disconnect the level sensor connector before lifting the coolant so as not to damage the sensor

The coolant tank also must keep some pressure inside with the engine fully warmed up. Sometimes the cap seal will leak pressure, or the clamp at the small return hose may not be tight enough

I filled the tank to the overflow hose level. I would think since the tank is higher than the radiator upper hose, that gravity would send the coolant into the upper hose. The tank cap seem to close pretty well - "tight enough".

if its leaking on the tank you would see the chalky residue.
I just replaced my overflow tank, older ones begin to crack especially on the molded corners.
As the engine comes up to temp the top hose should feel hot....if not the engine would be expected to overheat.

[Oka]

1. New Thermostat (89C/192F)
2. New Engine Coolant Temperature Sensor

3. FAULT CODE:
ECM-2000 Engine Coolant Temperature (ECT) Sensor - Signal too low.
.

4-5.jpg (83.76 KiB) Viewed 909 times

.
Please, educate me. Why should I get the ECM-2000 code if I have #1 & #2
All the reading I did on the ECT, I did not come across #5.

Thanks you!

[oragex]

The wires going into the electrical connector get damaged, either exposed - possible short, or simply cracked

[Oka]

The wires going into the electrical connector get damaged, either exposed - possible short, or simply cracked

You mean the one connected to the Coolant Temperature Sensor? If you mean that, I have really not checked it's integrity. I really should.

[Oka]

The wires going into the electrical connector get damaged, either exposed - possible short, or simply cracked

I got these reading at the wire harness to the temperature sensor. Seems all is fine at the harness, new thermostat and new temperature sensor.

CTS1.jpg (19.71 KiB) Viewed 900 times

[jonesg]

Might be a stored code from the old sensor.
Maybe try clear codes and test drive. Read again.

[Oka]

Might be a stored code from the old sensor.
Maybe try clear codes and test drive. Read again.

I can clear the code, but the Check Engine light and this gauge will still be an issue.
Running the engine for a less than a minutes and turn off, the radiator fan comes on.

TempGuage.jpg (33.52 KiB) Viewed 900 times