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97 Firebird 5.7 Liter Low Coolant Light Rate Topic: -----

#1 User is offline   bigb3337 

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Posted 01 September 2009 - 05:58 AM

Low coolant light stays on all the time, car runs fine. Replaced sensor, but issue still occuring, not low on fluid. Any reasons as to why?
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#2 User is offline   FriB 

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Posted 01 September 2009 - 06:17 AM

If the light seems to come and go, make sure the level in the remote reservoir is proper. Normal operation of the cooling system often causes coolant from the radiator to overflow into the remote reservoir. As the engine cools down, the radiator creates a vacuum and pulls this coolant back into the radiator. The piping from the neck of the radiator to the reservoir must be air tight for this to occur. Since these cars are getting older, it is not uncommon to get a small leak in the pipe that goes under the battery. Acid wears away at the pipe until it makes a hole. Even a small hole is enough to cause problems. A telltale sign is a small amount of coolant under the right front of the car after it is parked a while. Usually, only taking out the battery will reveal where it is coming from, because it slowly drips on the splash panel underneath and may travel along to another area to drip off.
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#3 User is offline   FBN Firebird Nation 

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Posted 01 September 2009 - 07:32 AM

View Postbigb3337, on 01 September 2009 - 05:58 AM, said:

Low coolant light stays on all the time, car runs fine. Replaced sensor, but issue still occuring, not low on fluid. Any reasons as to why?


Maybe a bad new sensor? That sensor is the only thing that will cause that light to go on, so if you have coolant in there, without any air bubbles, the light shouldn't be coming on.
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#4 User is offline   1997ws6 

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Posted 01 September 2009 - 07:38 AM

Maybe there's an electrical issue causing this? I'd check the wiring too.
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#5 User is offline   FBN Firebird Nation 

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Posted 01 September 2009 - 09:21 AM

View Post1997ws6, on 01 September 2009 - 07:38 AM, said:

Maybe there's an electrical issue causing this? I'd check the wiring too.


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