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On Topic Tech Sections => Non Honda Vehicle Tech => Topic started by: Travis? on October 05, 2012, 10:44:27 AM

Title: radiator fans running after car is shut off
Post by: Travis? on October 05, 2012, 10:44:27 AM
Im wiring up electric fans in my car. If found two ways to wire them in. One turns them on when it gets to temp and shuts off with the key. The other way, they turn on when it gets to temp, but will stay on until the temps drop even after the key has been shut off.

Is there one way thats better than the other?
Title: Re: radiator fans running after car is shut off
Post by: BSTr on October 15, 2012, 07:16:20 PM
The only benefit I could see by having it say on is, it MIGHT prevent the Radiator from Cracking.
If you have Plastic End Tanks i'd consider keeping it running...
Title: Re: radiator fans running after car is shut off
Post by: s2kallday on December 22, 2012, 05:52:10 PM
Most manufactures have it set up like this for places that get really hot like AZ n stuff cause it will keep the car from over heating after being driven then shut off in extreme temps. Either way u should be fine
Title: Re: radiator fans running after car is shut off
Post by: FoUrDoOrWhOrE on December 23, 2012, 08:47:45 PM
Once you shut off the car the water pump doesn't pump the water out of the radiator so no point in having it running after its off imo

blah blah blah

Title: Re: radiator fans running after car is shut off
Post by: Ninja on December 23, 2012, 08:53:17 PM
Once you shut off the car the water pump doesn't pump the water out of the radiator so no point in having it running after its off imo

blah blah blah

this is exactly what I was thinking. 

Only real benefit of the fans staying on, would be to stop a cheap radiator from cracking with heat.   
Title: Re: radiator fans running after car is shut off
Post by: unified11 on December 23, 2012, 09:19:49 PM
The '90-91 DA had an oil-temp sensor that would trigger the fans to keep running after the car had been turned off...


That being said, it wasn't on the '92+ Integras.. maybe it didn't work like they had wanted.

Either way, I don't see the harm in having your fans run for a short time after the car is off.
Title: Re: radiator fans running after car is shut off
Post by: Ferris on December 23, 2012, 09:57:33 PM
Just so you guys know... the OP posted this a couple months ago and the issue has been resolved. Locking thread.