Rad fan wierdness

[duandcc_forums at cox.net]

Mine only comes on in extremely hot conditions, I've heard it only a couple of times. I didn't think mine worked for the longest time. To test it, heat up the sensor with a lighter...

Dave
87.5 CGT
SE Virginia

>
> From: Andrei Cretu <andrei.cretu at iasi.rdsnet.ro>
> Date: 2003/09/29 Mon AM 10:18:18 EDT
> To: santoli9 at cox.net
> CC: iain.atkinson at tesco.net,  quattro at audifans.com
> Subject: Re: Rad fan wierdness
>
> hmm. On my 1987 Coupe GT the fan _NEVER_ comes on if the engine is shut
> off. If I shut off the engine with the fan on, the fan stops. I always
> wondered if this is normal/safe for the engine...
>
>
>
> Andrei.
>
> On Mon, 2003-09-29 at 17:02, santoli9 at cox.net wrote:
> > Off the cuff, without looking at the wiring diagram, it sounds like the after-run relay gets cut in only when the ignition is switched off. Then if under-hood temerature is above the after-run sensors setpoint, the fan will run.
> > As long as it shuts off once the engine compartment cools you have nothing to be concerned with. But if it continues to run you need to investigate the after-run circuit.
> > Steve
> >
> > >
> > > From: <iain.atkinson at tesco.net>
> > > Date: 2003/09/29 Mon AM 06:36:07 EDT
> > > To: quattro at audifans.com
> > > Subject: Rad fan wierdness
> > >
> > > Is this normal??? My 1990 9020v q once its reached normal running temp decides to run the rad fan every time I switch off the ignition, like this morning outside temp 7degs run for 5 miles got home switched off and on comes the fan.
> > >
> > >
> > > TIA
> > >
> > >
> > > Iain
> > >
> > >
> > >
>
>