1993 100CS Quattro Engine Temp Problem

Thread Tools
 
Search this Thread
 
Old Jan 17, 2001 | 05:09 PM
  #1  
srg3037's Avatar
Thread Starter
Audiworld Junior Member
 
Joined: Jun 2000
Posts: 26
Likes: 0
Default 1993 100CS Quattro Engine Temp Problem

About 1 year ago my thermostat failed resulting in overheating and subsequent head gasket failure.Head gaskets, waterpump and new thermostat installed......however since that time the engine has twice overheated in traffic when the fan has failed to come on...I have forced it on by turning on the compressor and the car is fine. I thought the problem was with the fan switch located in the radiator but, diagnosis says that the radiator is only getting to 130 degrees when the engine is ready to overheat and therefore the radiator temp switch would never come on......Repair place who I marginally trust says the "new" thermostat is bad e.g. only partially open and must be replaced (Approx $150.00)......The thermostsat is effectivly brand new....does this make sence???? Any other ideas or thoughts????Thanks for your help....Dick
Reply
Old Jan 17, 2001 | 06:33 PM
  #2  
ChuckH's Avatar
Member
 
Joined: Mar 2000
Posts: 2,536
Likes: 0
Default It's possible and fits the profile, but $150? Even for the V6...

...that can't be right. Thermo should be less than $20 and you can probably replace it yourself if you are even marginally mechanically inclined. Sorry, I don't know where it is on the V6.
Reply
Old Jan 17, 2001 | 06:35 PM
  #3  
ChuckH's Avatar
Member
 
Joined: Mar 2000
Posts: 2,536
Likes: 0
Default Also could be radiator blockage, but at <$20 and half an hour of...

...your time (atleast on the 5 cylinder cars), the thermo isn't a bad place to start.
Reply
Old Jan 17, 2001 | 07:02 PM
  #4  
DavidFeygin's Avatar
New Member
 
Joined: Jun 2000
Posts: 131
Likes: 0
Default Getting to the Thermostat...

is a bear on the V6-12 valve. You have to remove and re-tension belts, etc. Not at all easy. My pretty good mechanic took about 2 hrs to do it. But in any case, it should be much less than $150 for the part itself.

Dave
Reply
Old Jan 17, 2001 | 08:14 PM
  #5  
QCRAZY's Avatar
AudiWorld Super User
 
Joined: Mar 2000
Posts: 9,281
Likes: 1
Default Pic of thermostat in 12v V6.....

...it's a little nasty to get at (it's near the t-belt). Not quite as nice as the 5cyl!!

BTW: It's labeled as (1)

<img src="http://pictureposter.audiworld.com/1889/thermo93.jpg">

---
Andrew
90 80q
91 90
95 90q
Reply
Old Jan 17, 2001 | 09:47 PM
  #6  
ChuckH's Avatar
Member
 
Joined: Mar 2000
Posts: 2,536
Likes: 0
Default Eeeewwww!!! Now it's all clear. Leave it to Audi to put an...

...inexpensive and common failure item in a PITA spot! And all the times I swore at my 5 cylinder for being a PITA!
Reply
Old Jan 18, 2001 | 01:37 AM
  #7  
MikTip's Avatar
AudiWorld Expert
25 Year Member
 
Joined: Jun 2000
Posts: 29,356
Likes: 1
Default

Thermostat CAN be R&R'd without messing with timing belt! BTDT! Several times..........
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Yanivic
A4 (B5 Platform) Discussion
23
Jul 1, 2008 02:55 PM
audiparents
Audi 100 / A6 (C4 Platform)
8
Jun 9, 2008 11:46 AM
TEB
A4 (B5 Platform) Discussion
9
Jul 1, 2006 11:47 AM
highlyaspir8ed
Audi 90 / 80 / Coupe quattro / Cabriolet
4
Jun 30, 2005 06:42 AM
kjell
Audi 90 / 80 / Coupe quattro / Cabriolet
5
Mar 3, 2002 06:17 AM




All times are GMT -8. The time now is 01:21 AM.

story-0
Audi Unveils Absurdly Cool New Supercar: 10 Things You Need to Know!

Slideshow: Limited to just 499 units, the 987-horsepower halo car signals a new chapter for Audi performance.

By Verdad Gallardo | 2026-06-04 17:37:15


VIEW MORE
story-1
The Highs & Lows of Every Audi C-Class Generation

Slideshow: The highs and lows of every Audi C-Class generation.

By Joe Kucinski | 2026-05-27 16:05:50


VIEW MORE
story-2
Top 10 Most Expensive Audis Ever Sold on Bring-A-Trailer

People were more than happy to shell out big bucks for these cars.

By Brett Foote | 2026-05-27 15:32:23


VIEW MORE
story-3
10 Audi Features & Options We Miss the Most!

Slideshow: 10 Audi features and options we miss the most.

By Joe Kucinski | 2026-05-12 19:33:47


VIEW MORE
story-4
Audi Recreates Crazy-Looking Speed Record Breaker From 1935

Slideshow: Audi has recreated one of the wildest machines of the pre-war speed-record era, reviving a streamlined V16 racer that originally exceeded 200 mph in 1935.

By Verdad Gallardo | 2026-05-11 09:49:34


VIEW MORE
story-5
Coachbuilder Recreates the 1995 Audi TTS Concept

Slideshow: A Dutch coachbuilder has reimagined the original Audi TT by finishing what the 1995 concept only hinted at.

By Verdad Gallardo | 2026-05-05 15:17:58


VIEW MORE
story-6
Every Audi V10 Car Ranked!

Slideshow: Ranking every Audi V10 road car

By Joe Kucinski | 2026-04-29 16:11:56


VIEW MORE
story-7
9 Audi Designs That Aged Like Fine Wine

Slideshow: A look back at the Audis that didn't just survive changing tastes, they quietly outgrew them.

By Verdad Gallardo | 2026-04-28 19:38:27


VIEW MORE
story-8
2026 Audi Q5 Buyer's Guide (Every Model Explained)

One year off a full redesign, the best-selling Q5 is getting a few more updates.

By Brett Foote | 2026-04-17 09:56:19


VIEW MORE
story-9
Ranking Every Current Audi 'S' Model From Worst to First!

Slideshow: Ranking every current Audi 'S' model on sale today from worst to best.

By Joe Kucinski | 2026-04-16 10:28:28


VIEW MORE