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

94 low temp code

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Old Jan 18, 2013 | 11:30 AM
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Default 94 low temp code

I get a Check Engine Light whenever I start up cold. The initial coolant temperature reading says 142 degrees when I start it up (it's obviously not at that temp). As soon as the coolant warms up and the temp gage moves off the 142 reading, the Check Engine Light goes off.

Anyone have a thought on how to correct this condition?
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Old Jan 18, 2013 | 11:34 AM
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Check the coolant temp sensor (CTS) connection first. If ok, probably a bad CTS.
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Old Jan 18, 2013 | 11:48 AM
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Is that the sensor on the water pump?
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Old Jan 18, 2013 | 03:14 PM
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^^ Yes.
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Old Jan 19, 2013 | 05:24 PM
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Default any codes?

Originally Posted by zcmurray
I get a Check Engine Light whenever I start up cold. The initial coolant temperature reading says 142 degrees when I start it up (it's obviously not at that temp). As soon as the coolant warms up and the temp gage moves off the 142 reading, the Check Engine Light goes off.

Anyone have a thought on how to correct this condition?
Did you retrieve the codes? If not, suggest doing and advising (paper clip is all that's needed, check sticky or do a search on how to read)..

btw, could be the ECT, or could be something else and the ECT, the code(s) will help determine.

Lastly, when engine is cold (overnight), digital dash's coolant temp and oil temp should be very close...
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Old Jan 20, 2013 | 07:29 AM
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Pulled and cleaned the CTS plug. Works perfect now! Thanks for all the help guys! This is a great forum!!!!
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Old Jan 20, 2013 | 11:09 AM
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Old Jan 20, 2013 | 01:49 PM
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Man I love a easy fix an happy ending, that doesn't happen often enough
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Old Jan 20, 2013 | 07:26 PM
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Me toooooooo!
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