Temp. gauge? Can I trust the warning light on my 83 ur.

Thread Tools
 
Search this Thread
 
Old 02-05-2009, 05:20 AM
  #11  
Audiworld Junior Member
Thread Starter
 
ninestone's Avatar
 
Join Date: Apr 2008
Posts: 61
Likes: 0
Received 0 Likes on 0 Posts
Default Thanks.

for all the help. Everyone.
Old 02-05-2009, 05:55 AM
  #12  
AudiWorld Super User
 
Katman's Avatar
 
Join Date: Aug 2004
Posts: 3,535
Likes: 0
Received 0 Likes on 0 Posts
Default Another *high 5* on ignorance is bliss!

I too flew out to look at my first urq.

It seemed to start, run & drive Ok. A 'bit' of rust on the inner fenders, but hey, it is a urq , and I wanted it!

I was going to a far away rally to meet with the previous owner to take delivery (It was sort of splitting the difference of the travel distance).

After the rally, bought some new wiper blades, and drove it home. About 1500 km.. :-)

No problems getting home (except that the brakes would apply themselves when the underhood temps went up)

If I knew then, what I know now..

Yikes!!! :-)
Old 02-05-2009, 08:23 AM
  #13  
AudiWorld Senior Member
 
UrScubed's Avatar
 
Join Date: Dec 2005
Posts: 1,492
Likes: 0
Received 0 Likes on 0 Posts
Default Ah, the infamous self-applying brakes...

My 85 had that "factory option" when I got it. Made it interesting to drive until I got it figured out ;-)
Old 02-06-2009, 01:02 PM
  #14  
AudiWorld Member
 
cegerer's Avatar
 
Join Date: Sep 2006
Posts: 203
Likes: 0
Received 0 Likes on 0 Posts
Default So what causes this?

Haven't had that option activate .... yet.
Old 02-06-2009, 01:50 PM
  #15  
AudiWorld Senior Member
 
UrScubed's Avatar
 
Join Date: Dec 2005
Posts: 1,492
Likes: 0
Received 0 Likes on 0 Posts
Default It means the MC is failing- I think the failure mode has fluid leaking past the piston...

when the fluid behind the piston heats up and expands, the brakes apply themselves!

Or something like that.
Old 02-06-2009, 05:23 PM
  #16  
Member
 
quattro87's Avatar
 
Join Date: Nov 2005
Posts: 63
Likes: 0
Received 0 Likes on 0 Posts
Default That is the last time it has ever seen rain I would venture to guess.

The trip to Ur25 last year wasn't much better as far as not having the bugs worked out on the EFI upgrade and just going for it. I 2nd the Ignorance is bliss!!
Old 02-06-2009, 09:00 PM
  #17  
AudiWorld Senior Member
 
quattro v1.0's Avatar
 
Join Date: Aug 2000
Posts: 627
Likes: 0
Received 0 Likes on 0 Posts
Default well, it has been driven in the rain twice in 4 years! both in CO

and yea, chalk up the maiden voyage to UrQ25 in itself as my 2nd blessing of the Audi Gods

BTW, that was a low blow ;o}
Old 02-07-2009, 07:55 AM
  #18  
AudiWorld Senior Member
 
gmbchef's Avatar
 
Join Date: Nov 2001
Posts: 3,331
Likes: 0
Received 0 Likes on 0 Posts
Default

Nope. Boost gauge. No oil pressure gauge in an urq from the factory.
Old 02-09-2009, 11:12 AM
  #19  
AudiWorld Senior Member
 
c4S6's Avatar
 
Join Date: Sep 2006
Location: Atlanta, GA
Posts: 3,591
Likes: 0
Received 0 Likes on 0 Posts
Default Nice pics... Who's white SportQ is that in the 25urq pictures??

That thing is sweet!

I could have bought one out of the Blackhawk collection at Monterey (silent auction) for about $65k a few years back.

No money for that sorta thing, but, had I had it... Well, maybe it's good I'm poor.
Old 02-09-2009, 12:17 PM
  #20  
AudiWorld Super User
 
Katman's Avatar
 
Join Date: Aug 2004
Posts: 3,535
Likes: 0
Received 0 Likes on 0 Posts
Default Root cause? Don't know..

Root cause? Don't know..

But i do know, it happens when the underhood temps go up. Like when you are stuck in stop and go traffic, and you have no 'airspeed' to speak of.

At first, you can feel a bit of 'slack' in the pedal, follwed by some 'pushback' as you depress further.

IF the underhood temps continue to rise, the 'pushback' gets harder, and the brakes start to drag more.

If you let it get bad enouhg (In other words, if you don't stop and pop the hood so things cool down), it can get bad enough to start loading down the motor.

Replacing the master cylinder solved the problem. (Seems to be a known problem on 5K & 200s..)


Quick Reply: Temp. gauge? Can I trust the warning light on my 83 ur.



All times are GMT -8. The time now is 09:49 AM.