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Sedans Chevrolet Impala Chevrolet Impala Coolant System
22 messages, Last post on Oct 05, 2009 at 8:28 AM
You are in the Chevrolet Impala Forum. Your Hosts are pat & karens
WANT TO KNOW MY LOW COOLANT LIGHT KEEP COMING ON SO I WENT TO THE MECHANIC AND HE CHANGED THE SENSOR WELL IT DID NOT LAST THE NEXT DAY I WENT BACK AND HE SAID IT MUST BE DEFECTIVE SO HE REPLACED THAT ONE AND TWO DAYS LATER QUESS WHAT ITS ON AGAIN SO HE TOLD ME HE GOT THE PART AT A NAPA AUTO PARTS STORE AND MAYBE THAT SENSOR IS NOT COMPATIBLE WITH GM SO NOW HE WANTS TO PUT A GM LOW COOLANT SENSOR WHAT AM I GOING TO DO HELP!
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Replying to: chevybaby (Jul 05, 2007 4:13 pm)
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Replying to: rstraub (Jul 07, 2007 7:05 am) |
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Replying to: rstraub (Jul 07, 2007 7:05 am) |
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Replying to: chevybaby (Jul 08, 2007 9:09 am) I replaced the low coolant sensor ($36 from Rockauto.com), ...problem fixed. The sensor is located on the right(rear)(pass) side of the radiator (about 1 1/2" square in shape) ...near the battery. It is simple to replace, ...more work to remove the battery to get to it. As for 'bleeding' the system at the thermostat. This is done to remove air from the system. If you do not bleed the system, ...there could be pockets of air (hence absence of coolant) in the motor, ...which could(will) prevent adequate cooling.
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Replying to: kevink7 (Jul 16, 2007 4:27 am)
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Replying to: slvimpala (Jul 25, 2007 7:44 pm) 
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Replying to: chevybaby (Jul 08, 2007 9:09 am) I have replaced hundreds of NEW aftermarket sensors, not because they were broken, but because they didn't work properly. The customers ended up paying twice for the sensor, because they were saving money with the aftermarket parts. As for the low coolant light coming on, there is a service bulletin on diagnosing and repairing this problem. Any good mechanic would have checked it. Bulletin No.: 04-06-02-007 Date: August 11, 2004 TECHNICAL Subject: Low Engine Coolant Level Indicator Always On (Diagnose Low Coolant Level System Operation/Check Sensor for Oil Contamination) Models: 2000-2002 Buick Century, Regal 2000-2001 Chevrolet Lumina 2000-2002 Chevrolet Impala, Monte Carlo 2000-2002 Pontiac Grand Prix 2000-2002 Oldsmobile Intrigue Condition Some customers may comment that the low engine coolant level indicator is always illuminated. Cause The cause of this condition may be due to engine oil contaminating the coolant. Possible sources of oil contamination are internal engine leaks, improper service procedures, or the addition of some types of anti-leak additives to the cooling system. Once in the coolant, the oil leaves deposits on the level sensor creating an insulating film. This film results in a false activation of the coolant level indicator. Correction Diagnose low coolant level system operation and check the sensor for oil contamination using the procedure listed below. Important: No coolant supplements should be used in GM cooling systems, other than what is approved and recommended by GM. The use of "aftermarket" over-the-counter sealing and cooling supplements may affect the operation of the low coolant level sensor. Discoloration of the coolant recovery bottle is normal and does not necessarily indicate that coolant contamination is present. |
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Replying to: 0patience (Jul 29, 2007 12:27 pm) |
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Replying to: 0patience (Jul 29, 2007 12:27 pm) thanks for replying I have gotten my 2000 impala fix this will be the third sensor they put but this time its the gm brand not the napa so far so good i have told the mechanic about bleeding the air out too which he did that while i was in the shop. He did not bled it till he saw bubbles in the raidiator but said that my head casket may have a pin hole in it that it could be why the low coolant light keep coming on anyway told me to try out the sensor and see if it will go back on so far i have done 400 miles on the new sensor and it has not come on yet . ty so much for everyones info . Let me know if there are anymore problems with these cars that i should know about thanks again
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