C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Low Coolant

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Old Feb 18, 2004 | 12:37 AM
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From: anderson sc
Default Low Coolant

the other day i was going down the road and came to a red light. i had just gotten in the car so it wasnt warmed up at all. i had to hit the brakes a little hard to stop in time, speeding a little, and my low coolant light came on for just a flash. any idea why that is? it went right back off. is my coolant just high enough to not trigger this sensor and when i braked it got low? is a sensor bad? how can i check it? thanks for the help fellas. :thumbs:
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Old Feb 18, 2004 | 09:42 AM
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Default Re: Low Coolant (Clemson Vette)

pop the cap and check the coolant level... fill to lip with distilled water... it may also have air and need to be burped :thumbs:
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Old Feb 18, 2004 | 07:41 PM
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Default Re: Low Coolant (Clemson Vette)

:cheers:

Check the coolant level, obviously!

But also look at Rad Cap.

If the seals are leaking, fluid will go into the reservoir when engine is warm, but air will be sucked in when temps cool.

Rad can appear almost full when cold, but upon starting, fluid level will be sucked down.

9 times out of ten, this problem is a rad cap, assuming you have burped the system!

:seeya

:steering:

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Old Feb 18, 2004 | 09:14 PM
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Default Re: Low Coolant (jackdaroofer)

I have the same trouble...I did as said above and even bought a new sensor...same thing...it is intermitant...I am guessing it is a lose connection up the line somewhere then...
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Old Feb 18, 2004 | 09:23 PM
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Default Re: Low Coolant (Clemson Vette)

I had one come on intermittently after making the trip back down to LSU.

Remove the radiator cap, start the car and let it warm up to tstat opening temperature, then add coolant/water to bring it to the top. With it being so cold, my stat rarely opens. The stock stat in 95 is 180.

It may also be adviseable to replace the radiator cap. I didnt have to, but probably should.

The Low Coolant sensor is stuck into the top of the radiator, so whenever the level drops below the sensor, the circuit reads that and the light comes on.


[Modified by vader86, 8:24 PM 2/18/2004]
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