Evap fan on at start up.

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Apr 3, 2011 | 08:56 PM

Wolf

Thread Starter

Three Wheeling

Joined: Mar 2011

Posts: 89

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From: Traverse City, Mi

Evap fan on at start up.

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Last edited by Wolf; Apr 4, 2011 at 12:24 PM.

Apr 3, 2011 | 08:59 PM

Spike555

Team Owner

Joined: Jun 2007

Posts: 26,212

Likes: 98

From: Grand Rapids MI

And its 35*F and raining too...

Apr 3, 2011 | 09:53 PM

Wolf

Thread Starter

Three Wheeling

Joined: Mar 2011

Posts: 89

Likes: 0

From: Traverse City, Mi

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Last edited by Wolf; Apr 4, 2011 at 12:24 PM.

Apr 4, 2011 | 08:27 AM

DarylJ

Winching

Joined: Jun 2009

Posts: 692

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Quote:

Originally Posted by Wolf

I replaced the seized evap fan (electric) and it worked great (came on when temp reached mid way. Now it comes on when you start vehicle. Relay is good,

Do you mean the condenser fan? The "evaporator fan" would be the blower motor inside of the truck.

The condenser fan is turned on by that relay getting a sink to ground from the ECU. The ECU does this when the collant temp sensor crosses a threshold. If the relay is good, and the ECU is OK, it's the coolant temp sensor or a wiring issue.

Apr 4, 2011 | 08:51 AM

Wolf

Thread Starter

Three Wheeling

Joined: Mar 2011

Posts: 89

Likes: 0

From: Traverse City, Mi

Yes, the condenser fan, I was typing in a rush because I had got a call from the wife that the LR wouldn't start. I'll look into the wiring and sensor for issues. I didn't quite know what triggered the fan on temp rise, Thanks and I'll repost when I resolve the problem.