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

LOW COOLANT LIGHT???

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Old Dec 18, 2001 | 11:52 AM
  #1  
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Default LOW COOLANT LIGHT???

My low coolant light on my '89 keeps coming on until the car reaches about 150-60 then goes off. Coolant isn't low, it's fresh as are hoses and therm. (160 ). Ran car with cap off until it got hot, then topped it off, but really think I only replaced as much as had run out during process!!....Any suggestions???
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Old Dec 18, 2001 | 11:55 AM
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Default Re: LOW COOLANT LIGHT??? (joseph p)

I was just going to post this exact same question - I also have an 89 with a hyper-active low coolant light. Whats the deal with that thing?
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Old Dec 18, 2001 | 12:13 PM
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Default Re: LOW COOLANT LIGHT??? (joseph p)

The radiator is lower than the thermostat housing so there is almost always a air pocket that develops there. Remove the radiator cap warm the engine and bring rpms @ 2500 top of with coolant and quickly install radiator cap before lowering rpms. You'll be surprise how far the coolant level drops when you bring up the rpms. It may take a couple times of doing this, but it usually works.

Dennis
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Old Dec 18, 2001 | 12:17 PM
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Default Re: LOW COOLANT LIGHT??? (chasenme)

:yesnod: what chasenme said. That solved my low coolant light problem real quick. :cheers:
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Old Dec 18, 2001 | 01:26 PM
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Default Re: LOW COOLANT LIGHT??? (War Machine)

c4c5specialist told me to replace my radiator cap.. and it fixed the problem!! :D
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Old Dec 18, 2001 | 03:35 PM
  #6  
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Default Re: LOW COOLANT LIGHT??? (Smash)

sounds like a plan! - thanks for the tip!
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Old Dec 18, 2001 | 05:41 PM
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Default Re: LOW COOLANT LIGHT??? (PagesterL98)

CHECK FOR PUDDLES . I JUST GOT DONE REPLACING THE WATER PUMP ON MY 86 L-98 . IT IS INTERMITTENT AT FIRST .
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