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2000 Chevy Impala, about 150,000 miles. Low coolant light has come on and stays on, even though I have added anti-freeze to the correct level. I had the radiator completely rodded out last fall and everything else seems to be running well. It doesn't seem to be running hot.
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If the coolant level is low in the engine it can cause heat fluctuations from the heater, as well as an incorrect reading on the gauge. Make sure the coolant level is correct in the engine.
That is good bet but you should see some spotting from coolant under the car. There is a weep hole on the water pump and what happens with age is that the bushing in the pump on the shaft gets worn and coolant starts to drip out.
If you added the green anti freeze to you system it will make the check coolent level light come on. Drain the system and use the extended life anti freeze and that will fix the problem.
not the pump but air in the system or a broken wire to the coolant level sensor
that sensor at the top of the radiator tank has to be completely immersed in coolant or the circuit is broken and the light comes on
same effect id the wire to that sensor is broken in the insulation
Did you smell the oil? Make sure it does not smell like anti freeze. Also check under the car for leaks. Check floor mat could be heater core. Also check the hose that goes from the resivoir to the radiator. Have the code read at an autoparts store it is probably emission related
Bleed the air out of the coolant system,and add more coolant,to radiator,and reservoir,and make sure the cooling fans are coming on,if the low coolant light stays on,remove the low coolant light sensor,and clean it off,it is located on passengers side in the radiator,it has a wire clip you have to remove,and dont loose it,after cleaning it,put the clip back on the sensor,and push the sensor back in the hole.
Dexcool is the correct antifreeze for the engine, but you can have it flushed out and use the green coolant if you prefer. The dis advantage is the green coolant needs to be replace at about 50,000 miles and the dexcool is 150,000 miles.
The anti freeze on a 2009 impala only needs to be changed every 5 years or 150,000 miles The amount most of the time is 2 to 3 gallons and it can only use Dexcool antifreeze.
check for something stuck in the wheels and as for the coolant light get the car running and up to warm temp and start adding coolant to the reserviour bottle until it is up to hot level because there maybe a bubble in the line but also if might be a bad switch in the reservior bottle itself
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