[urq] odd temp behavior

[Tony Lum]

The MFT is notorious for failing.  Have you got another you can try?

Tony



________________________________
 From: Mike Sylvester <mike at urq20v.com>
To: Brandon Rogers <brogers at terrix.com>; 'Steve Buchholz' <urq at pacbell.net>; 'urq Audifans' <urq at audifans.com> 
Sent: Wednesday, February 29, 2012 10:23 AM
Subject: Re: [urq] odd temp behavior
 
Yes, it gets the temp from the MFTS.
The switch in the rad is pretty new.
I am using the 3 pin type.

Mike



> -------- Original Message --------
> Subject: RE: [urq] odd temp behavior
> From: "Brandon Rogers" <brogers at terrix.com>
> Date: Wed, February 29, 2012 12:05 pm
> To: "'Mike Sylvester'" <mike at urq20v.com>, "'Steve Buchholz'"
> <urq at pacbell.net>,        "'urq Audifans'" <urq at audifans.com>
> 
> 
> Hmm interesting - I could see how it could be related to a voltage drop -
> however I've never had that happen with my car.  I have the in-dash temp
> gauge tht recieves the temp signal fromt eh MFTS - I assume you  do, too,
> right (use the MFTS)?
> 
> A couple years ago my car started getting hot sometimes - so I replaced the
> fan switch at the bottom of the radiator - ~$12 IIRC - and I was surprised
> to see my temps stay both more consistent and lower.  That switch is not a
> good/bad deal - it gets "lazy".
> 
> Might be worth just throwing a new one in there if yours is old.
> 
> Brandon 
>  
>  
> 
> 
> -----Original Message-----
> From: urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] On Behalf
> Of Mike Sylvester
> Sent: Wednesday, February 29, 2012 9:49 AM
> To: Steve Buchholz; urq Audifans
> Subject: Re: [urq] odd temp behavior
> 
> 
> This experiment will have to wait until I can drive the car again.
> 
> Mike
> 
> 
> 
> > -------- Original Message --------
> > Subject: Re: [urq] odd temp behavior
> > From: "Mike Sylvester" <mike at urq20v.com>
> > Date: Tue, February 28, 2012 11:19 am
> > To: "Steve Buchholz" <urq at pacbell.net>, "urq Audifans" 
> > <urq at audifans.com>
> > 
> > 
> > I'll have to verify if the high temp reading is linked with the blower 
> > motor speed or the heater temp selection. If it were the blower motor 
> > speed I would have also seen this behavior in the summer, but the 
> > possibility of a bad ground can't be overlooked in these cars.
> > 
> > The temp it doesn't jump around right away when the blower is turned 
> > on or off. When it is hot and I turn off the blower and change the 
> > heat setting , it takes about 5 minutes for the engine temp reading to 
> > come back down.
> > 
> > Mike
> > 
> > 
> > 
> > > -------- Original Message --------
> > > Subject: Re: [urq] odd temp behavior
> > > From: "Steve Buchholz" <urq at pacbell.net>
> > > Date: Tue, February 28, 2012 10:36 am
> > > To: "Mike Sylvester" <mike at urq20v.com>,  "urq Audifans" 
> > > <urq at audifans.com>
> > > 
> > > 
> > > By any chance were you running the interior blower at the same time? 
> > > IME the ground current from the blower causes a voltage drop in the 
> > > gauge's ground which causes erroneous readings.
> > > 
> > > Steve Buchholz (mobile)
> > > 
> > > ----- Reply message -----
> > > From: "Mike Sylvester" <mike at urq20v.com>
> > > Date: Tue, Feb 28, 2012 6:29 am
> > > Subject: [urq] odd temp behavior
> > > To: "urq Audifans" <urq at audifans.com>
> > > 
> > > With the mild weather we've had here in NE, I've driven the urq a 
> > > few times. I've noticed that engine temperature has been abnormally 
> > > high, which seemed odd since the outside air temp was in the 30's.
> > > 
> > > The strangest part is that the engine temp only goes high if I have 
> > > the heat in the hot position.  If I move it to cold, the engine temp 
> > > will drop back to normal after a few minutes.
> > > 
> > > This seems completely counter-intuitive.  How can allowing coolant 
> > > to flow through the heater core cause the engine temp to rise? Is is 
> > > as if it ceases to flow through the radiator when the heater valve 
> > > is open.
> > > 
> > > 
> > > Mike
> > > 
> > > 
> > > 
> > > 
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