[urq] odd temp behavior

[Brandon Rogers]

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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