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

Secondary fan temp

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Old May 31, 2018 | 04:33 PM
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Default Secondary fan temp

Is there a way to make the secondary fan come on sooner or at a lower temp? (1991 corvette)
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Old May 31, 2018 | 05:39 PM
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https://www.mamotorworks.com/Corvett...-fans-626005-1


Try this one.
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Old May 31, 2018 | 06:04 PM
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Is the fan in the 1991 controlled by the PCM? Or by the switch mounted in the head (passenger side IIRC)? If it's the one controlled by the switch in the head, there's a lower temperature version of the switch available. I'll see if I can find the part # for you.

Last edited by C6_Racer_X; May 31, 2018 at 06:06 PM.
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Old May 31, 2018 | 06:43 PM
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I just checked. The stock switch is AC-Delco D1852B, GM # 14043276. The lower temperature switch is AC-Delco D1855B, GM # 14043275.
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Old May 31, 2018 | 06:56 PM
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Thanks guys these are all good help
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