Cooling hysterisis 1989 TPI
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Joined: Mar 2021
Posts: 18
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From: MISSOURI
Car: IROC-Z Z28
Engine: 5.7L TPI
Transmission: AT
Axle/Gears: 2:73
Cooling hysterisis 1989 TPI
I have a 5.7L TPI. I have a new ecm that turns the fan on at 195* I need to know if the stock cooling temp sender is compatible with a 180* thermostat ? Is this correct hysteresis ? Thank you
Joined: Dec 2004
Posts: 16,895
Likes: 1,014
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Cooling hysterisis 1989 TPI
What temp sender are you referring to the secondary head switch ?
if primary fan was tuned to come on at 195f a 180 or 195f thermostat works fine.
operating temp might be close to 200f.
if primary fan was tuned to come on at 195f a 180 or 195f thermostat works fine.
operating temp might be close to 200f.
Joined: Dec 2004
Posts: 16,895
Likes: 1,014
From: Mile High Country !!!
Car: 1967 Camaro, 91 z28
Engine: Lb9
Transmission: M20
Axle/Gears: J65 pbr on stock posi 10bolt
Re: Cooling hysterisis 1989 TPI
Nothing in the block, cts for the ecms control in front of the intake manifold.
seconday fan sw passenger head between 6&8 cylinder. And gauge in head on drivers side between 1&3 cylinder
seconday fan sw passenger head between 6&8 cylinder. And gauge in head on drivers side between 1&3 cylinder
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