The electric fan on the 4.7L trucks is kicked on when the a/c is on,
regardless of engine temperature.With the a/c off, the electric fan is
activated ny the computer when the engine temp reaches 210 deg.
i know my fan clutch is bad, and I am going to replace it.But I guess since
the clutch doesn't work, I haven't had an engine fan.With just the
electric,(mind you that this is in texas summer, average 100*) I will tell
you that with the a/c on, truck runs perfect.With the a/c off, the temp will
wander upwards and you have to use the heater to bleed off some heat.If I
would idle with no a/c, truck would get hot pretty quick.I've decided that
the 4.7L was designed to run w/the a/c on anyway.Because: It Idles 150 rpm
higher and holds it,I've never had it quit on me w/ the a/c running,but it
will stall without it.And, the temp issue.I have been trying to figure a way
to wire up a fan switch for the electric fan,because I sure would like to be
able to use it without my a/c.I try to avoid using the a/c at all.I think
mine's been on once a week for about 20 min during my ride home to keep all
the oils moving around in there amd to keep the system from getting musty.I
don't like a/c's and never have.I just don't use it.Hope this helps,Will
----Original Message Follows----
From: Michael Kuriger <michael@isuzu-mods.com>
Reply-To: dakota-truck@buffnet.net
To: dakota-truck@buffnet.net
Subject: Re: DML: clutch fan warning
Date: Sat, 28 Oct 2000 21:54:49 -0700
I think the electric fan kicks in when the AC is on, but I don't know for
sure.
the computer might kick it on without the ac. I live in Los Angeles, Ca.
-=mike
WMBARRET@aol.com wrote:
> Mike, Thats very interesting. At what temperature does the electric fan
kick
> in????
> What part of the country are you in?? I might have to give this a shot,
I
> have the 180 t-stat, put it in today. If I can take that fan off, I'd
gain
> some HP !! ???? hmmmm????
>
> Matt Y2K-HEMI
>
> In a message dated 10/28/00 11:21:57 PM Eastern Daylight Time,
> michael@isuzu-mods.com writes:
>
> > Subj: Re: DML: clutch fan warning
>
> >
> > I took that waste of rotating mass OFF! The 4.7 has an electric fan
> > also so I ran mine all summer without the manual fan and the temp
never
> > rose over 200 degrees (stock Tstat) also I thought sitting in a drive
> > through for 15 minutes would heat it up but it stayed right where it
is
> > supposed to. Granted, I was running the AC so the electric fan was
on.
> > Now that it is cold out the temp sits a little lower and I'm not using
> > the AC.
> >
> >
> > -=Mike Kuriger
> > 1991 Isuzu Impulse RS 1.8
> > 2000 Dodge Durango SLT 4x4 4.7
> > http://www.isuzu-mods.com
> > http://www.twistedbits.net/WWWProfile/dakota/NgFQdD9vkNHNg
> >
> >
-- -=Mike Kuriger 1991 Isuzu Impulse RS 1.8 2000 Dodge Durango SLT 4x4 4.7 http://www.isuzu-mods.com http://www.twistedbits.net/WWWProfile/dakota/NgFQdD9vkNHNg_________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com.
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