Last post on May 22, 2013 at 9:28 PM
You are in the Chevrolet Impala
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Chevrolet Impala, Sedan
#8 of 33 Re: low coolant light [chevybaby]
Jul 29, 2007 (1:27 pm)
Some aftermarket sensors are not calibrated properly and will give problems with the system. Using OEM sensors will help keep you from having problems with sensors.
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
Low Engine Coolant Level Indicator Always On (Diagnose Low Coolant Level System Operation/Check Sensor for Oil Contamination)
2000-2002 Buick Century, Regal
2000-2001 Chevrolet Lumina
2000-2002 Chevrolet Impala, Monte Carlo
2000-2002 Pontiac Grand Prix
2000-2002 Oldsmobile Intrigue
Some customers may comment that the low engine coolant level indicator is always illuminated.
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.
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.
#9 of 33 Re: low coolant light [0patience]
Jul 29, 2007 (3:45 pm)
I think For 2008 or 2009 Gm Needs to Look at all the problems with the impala and fix them like the old 3400 v6 with intake and head problems thats just flat out dumb why whould put your loyal Customers Thru that type of Mess i'm a proud owner of my impala but i know people from the area who have impalas and they all have had that Head and intake problems and if you got the 2k to get it fixed it blows up any way
#10 of 33 Re: low coolant light [0patience]
Jul 29, 2007 (5:56 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
#11 of 33 Re: low coolant light [0patience]
Jul 30, 2007 (8:10 am)
Good looking out. Thanks for the info. Rich
#12 of 33 Re: low coolant light [chevybaby]
Aug 09, 2007 (4:53 pm)
My 02 Impala with the 3800 engine has been running on the hot side whenever I do much stop and go driving and it's 80 degrees or above. I've got 155,000 trouble free miles on the old girl and am planning on trading this fall. I'm just curious if anybody has any ideas on what's going on? The coolant level is full and water pump does not appear to be leaking. I checked the antifreeze and it's up to snuff. The last week or two the low coolant light has been coming on when I start the car, but then goes off after a minute or two of driving.
It rarely goes in the red, but it gets pretty darn close. I've resorted to turning the A/C off when I'm stopped to help out. I live in the Midwest and in another 45 days, it will start cooling down, so won't have to worry too much then.
I just hoping it's not a serious issue and I can nurse it along another 4 or 5 months.
#13 of 33 Re: low coolant light [bobber1]
Aug 09, 2007 (7:54 pm)
Could be any number of things. You might check the radiator and make sure it isn't clogged up with dirt or debris on the outside (maybe a plastic bag of something has gotten stuck on it). Then maybe check the inside of the radiator to make sure it isn't gunked up. Could also be the thermostat (if you haven't replaced it in 155k miles it probably wouldn't hurt to do that just in case).
Only other thing I can think of is we used to have an old Ford Escort, and the controller that regulated the electric cooling fan burned out under the dash. I didn't notice anything wrong with the car until the summer when it would get hot if I got stuck in traffic. Basically as long as the car was moving, there was enough air going through the radiator to keep it cool, but if I stopped for any period of time the car would get hot. So if you notice the car gets hotter when you're sitting still you might have a fan problem.
#14 of 33 Re: low coolant light [bobber1]
Aug 10, 2007 (5:12 am)
I think you'll find due to these cars being a "bottom breather", they tend to run a lil warm to start with. Flush your system though. I had to flush ours five times with a coolant system flush before you could actually see it circulate by the radiator cap! You'll find that it not only cleans out the engine but it's a lot cheeper than a new radiator. It runs a lot cooler since then. We are also pushing 170,000 miles as of now. Good luck selling her. The dealer won't give you anything for it even though it's totally loaded. KBB says it's worth $5,000 +, I've only recieved offers of as much as $1,800. It's really hard to part with a car knowing what it's actually worth, and after maintaining it all the time as required and needed. If we could even get 3,000 to almost 4,000 that would be good enough. Well, good luck.
#15 of 33 Re: low coolant light [rstraub]
Aug 10, 2007 (8:02 am)
It's a work car, so the resale won't hit me directly. Besides at 155,000 miles I've definitely gotten the goody out of it. In your case, you could drive it another 50,000 or 100,000 and probably get the same money for it, so I'd keep driving if it's still dependable.
That's what I'd normally do with this one, but I've got 3 little kids and the last thing I want is to get stranded in -20 degree weather. I also want the new stability control systems for more safety.
#16 of 33 Re: low coolant light [rstraub]
Aug 11, 2007 (2:04 pm)
I think we got the cooling issue figured out. I had it in for an oil change and the mechanic said he blew out the radiator with air and a lot of grass came out. I drive through farm fields once in a while so it makes sense. I had blown the front of the radiator out with water earlier in the summer, but evidently the only good way to get to the area involved is to put the car up on a hoist and come in from behind; neither of which I can do at home too well. It seems to be running much cooler now.
#17 of 33 Where is the Coolant temperature Sensor?!
Aug 19, 2007 (3:14 pm)
HELP!!! I have a 2001 Chevy Impala with 316,127 miles - LOVE my car! I've been having a problem recently. When my temperature gauge doesn't move, my A/C doesn't move. Oh, it blows but doesn't get cold and that is unacceptable living in south Texas!! i read a few forums and learned this could be a coolant temperature sensor problem so I ziggied on over to the nearest auto supply store, bought the sensor, but I'll be darned.....I can't for the life of me figure out where it is! Neither can my husband. If anyone knows, I would be so happy!! I might add that this doesn't happen all the time, when the temperature gauge moves, the air conditioning works great. Thanks a bunch!