Radiator Fans Problem

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Feb 20, 2002 | 12:53 AM

mightyslash

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Will Work for Ferrari

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From: West Coast

Radiator Fans Problem

If I turn the ignition switch to "On" when the car's hot (like you turned the car off 10 minutes ago after driving and you turn the ignition to "On"), the radiator fans will come on even though the AC is off. If I turn it to "On" when it's cold, then none of the fans will come on. What kind of problem is that?

Feb 20, 2002 | 01:06 AM

mightyslash

Thread Starter

Will Work for Ferrari

Joined: Oct 2001

Posts: 582

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From: West Coast

Or is it a problem at all

Feb 20, 2002 | 01:21 AM

mightyslash

Thread Starter

Will Work for Ferrari

Joined: Oct 2001

Posts: 582

Likes: 0

From: West Coast

.....

Feb 20, 2002 | 01:29 AM

Mr Seven

Full Member

Joined: Dec 2001

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From: San Francisco

Quote:

Originally posted by mightyslash
Or is it a problem at all

Not a problem. It's called "heat soak".

Feb 20, 2002 | 01:30 AM

JspecFD

Senior Member

iTrader: (2)

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From: Bay Area, CA

Expected Behavior

Feb 20, 2002 | 01:41 AM

skunks

I'm a CF and poop smith

Joined: Aug 2001

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From: Hawaii

totally normal!!!

Feb 20, 2002 | 05:13 AM

Crashunit

MIA

Joined: Aug 2001

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From: Los Angeles

how long have you had your car??

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Feb 20, 2002 | 05:42 AM

evel333

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Joined: Aug 2001

Posts: 81

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From: San Francisco

Re: Radiator Fans Problem

Quote:

Originally posted by mightyslash
If I turn the ignition switch to "On" when the car's hot (like you turned the car off 10 minutes ago after driving and you turn the ignition to "On"), the radiator fans will come on even though the AC is off. If I turn it to "On" when it's cold, then none of the fans will come on. What kind of problem is that?

No problem at all. It's just heat soak: Your engine continues to heat up your coolant even after you shut down. Once you start up again, your ECU sees "hot" and activates your fans.

Feb 20, 2002 | 07:42 AM

airborne

King of the Duct Tape

Joined: Feb 2001

Posts: 1,177

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From: PA

yeah heat soak is an issue with FDs...thats what the fan mod is for. even better has anyone tried an electrical water pump? something to circulate coolant after the car is off? i remember a discussion a while back about that...