Sky InsuranceChris Nott
Results 1 to 32 of 32
  1. #1
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489

    more problems...... :-( help pretty please please please

    on my 2.7t a6, this time its the cooling system, my temp gauge had its own mind, so i thought i would try and fix by replacing the sensor/sender so i bought one off flea bay and went to fit it, but got confused, as i thought it was at the back of the engine, under the intake pipe (a pipe kind of sticking up) but the actual sensor was different to the one i bought, so i thought i'd ordered the wrong one, but then i noticed another one at the front, on the bottom radiator hose which was the same as the one i bought, so i changed it, but hasnt fixed the problem.

    So, my first question's are, what is the one at the back? and what is the one at the front?



    Also a quick question on the viscous fan, as at low revs you can hear the fan "howling" and gets louder as you go up the revs, i know this is normal but when i get to exactly 2800 rpm it all goes quiet (guessing it just slows down) but why? i thought it would just keep getting faster and faster all the way up the rev range?

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    The one down the bottom is the radiator fan switch.

    The one behind the cylinder head is the sensor for the dash and ECU.

    The viscous coupling only locks up when the temperature is high. At normal temperatures the coupling will only transmit a small amount of drive to the fan.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  4. #3
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    excellent, thanks, so i obviously ordered the wrong switch, as also the one i received was round and the one i need is square, but saying that i cant find a square one?

  5. #4
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    its okay, i think iv found one, this should do it eBay - The UK's Online Marketplace



    also, im guessing, if this does not solve the problem, its going to be the thermostat?
    Last edited by audi-a6; 6th February 2012 at 15:20.

  6. #5
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    First off, buy a genuine one, as if you fit cheap tat you'll have no idea if you've actually fixed it or if the new sensor is also rubbish.

    Secondly there are two versions, depending on your chassis code/year.

    From what i can gather Chassis years upto "X" have 059919501 and from "Y" onwards they use 059919501A

    The electrical plug is different.

    You'll need to check the VIN to confirm

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  7. #6
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    Quote Originally Posted by aragorn View Post
    First off, buy a genuine one, as if you fit cheap tat you'll have no idea if you've actually fixed it or if the new sensor is also rubbish.

    Secondly there are two versions, depending on your chassis code/year.

    From what i can gather Chassis years upto "X" have 059919501 and from "Y" onwards they use 059919501A

    The electrical plug is different.

    You'll need to check the VIN to confirm
    from what i can gather, it looks like the "A" is the square blue one and the other is a green/grey (colour blind lol) kind fo round one..........

  8. #7
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    Genuine ones are both green.

    no suffix is Square
    "A" suffix is D shaped

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  9. #8
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    Quote Originally Posted by aragorn View Post
    Genuine ones are both green.

    no suffix is Square
    "A" suffix is D shaped
    arrr right, so D shape is the one at the front (the one i originaly ordered) and the one at the back at the mo is blue, so that means its already been replaced with a cheap one then?


    i suppose the best bet is just call audi and then will work it out from the reg number wont they?

  10. #9
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    no.

    The one at the back comes in two styles, depending on the year of the car. D-shaped on later cars (~2000 onwards) and Square on earlier cars. Older ones were blue, but they are all now green from the dealer.


    The one down the front is usually black and is a totally different type of sensor to the one at the rear.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  11. #10
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    o right i see, im just waiting for audi to phone me back, but i found this diagram and it shows both sensors the same apart from the "A" thats what confused me lol, but then again im probs just being a bit thick

    Электрооборудование | Audi A6/Avant 2000 год | Каталог запчастей Audi, подбор автозапчастей Audi по автокаталогу.

  12. #11
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    o yeah, you might have translate through google lol

  13. #12
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    the "A" part is in brackets (3) because its an alternaitive part.

    If you look in the description column you'll see it says "F 4B-Y-000 001>>" beside the A part, this is referenceing the chassis cutoff.

    The bottom one on the hose is part number 45 on that diagram, which you'll notice is a complketely different part number.

    What exactly have you fitted in the bottom hose, becaues if its the wrong thing your electric fans wont work?

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  14. #13
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    so whats no.35 (thats the one i was looking at, oops) but yeah i think i changed no.45 with part no. 059919501A im feeling more stupid by the minute, although with that in there the fans still cut in........ i will put the old one back i think........ but as for the other one it looks like i defiantly need 059919501

  15. #14
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    and whats no.17..... omg how many sensors do these cars need lol so far there is 5 sensors for the cooling system

  16. #15
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    17 and 45 are the same thing, just in different locations. The diagram covers all v6 engines, not just the 2.7.

    Similarly 3 and 35 are the same thing.

    The bottom pic looks like the diesel engine, so your engine will have 3, 3A and 17 on it.

    If you've put a 501A into 17's position you need to swap that back.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  17. #16
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    o right i see, yeah i think its 17's position although it a different angle, but never the less its the wrong sensor in the wrong place, so will change that one back now and order the proper one for the back (no.3) and hopefully that sorts it.

    Thanks very much for your help

    will let you know what happens

  18. #17
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    okay, put in the new sensor today........

    no change what so ever, gauge still barely moves past 60, then if rev it a bit it drops back down......

    whats next to check?
    Passat B5.5 tdi....... big plans to come
    Audi A3 8p motor way work horse
    Nissan Skyline r33 gts-t ..... my mid life crisis fun car

  19. #18
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    also just found something interesting, if you hold the recirc button and the up button on the climate controll, it shows live info on the display......... any one know anything about this?
    Passat B5.5 tdi....... big plans to come
    Audi A3 8p motor way work horse
    Nissan Skyline r33 gts-t ..... my mid life crisis fun car

  20. #19
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    Probably Thermostat time.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  21. #20
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    Quote Originally Posted by audi-a6 View Post
    also just found something interesting, if you hold the recirc button and the up button on the climate controll, it shows live info on the display......... any one know anything about this?
    yes, goto 49c and press recic and it will show you the engines temperature in real digits. That way you can rule out the guage itself.

    If its the thermostat, you'll probably find the temperature rises when parked with the engine running or when stuck in traffic, and drops again once moving. You might need to switch off the AC to see the effect though.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  22. #21
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    o no, not the thermostat........ code 49 reads "0"
    Passat B5.5 tdi....... big plans to come
    Audi A3 8p motor way work horse
    Nissan Skyline r33 gts-t ..... my mid life crisis fun car

  23. #22
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    Hmm, maybe the A6 is different to the A4 then.

    try 51, 57 or 58?

    Vagcom probably required to confirm though.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  24. #23
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    will give it ago, is there any thing else that could be causing the temp problem, before i go out and spending lots of money on thermostat and cambelt
    Passat B5.5 tdi....... big plans to come
    Audi A3 8p motor way work horse
    Nissan Skyline r33 gts-t ..... my mid life crisis fun car

  25. #24
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    You need to diagnose the issue. If you can get the live coolant display on the climate control, or vagcom, then you can see what the temperature is doing, and base your fix on the results you find.

    Faulty thermostats are fairly obvious from looking at the live data.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  26. #25
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    its no. 58 for coolant temp..... and no mater what im doing, it does not go above 61, will try just leaving the car running for a while 2moz
    Passat B5.5 tdi....... big plans to come
    Audi A3 8p motor way work horse
    Nissan Skyline r33 gts-t ..... my mid life crisis fun car

  27. #26
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    Make sure the AC is off when testing, as if its on it runs all the cooling fans.

    You may find in these really low temperatures that even the viscous fan can pull enough air through the rad to stop the temperature rising at idle, if thats the case, stick a piece of cardboard over the front of the radiator (temporarily ofcourse) and see what happens. If it then comes up to 90c then its almost certainly the thermostat.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  28. #27
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    Will try that, the other thing, is if it doesn't rise at all, could it be the water pump?
    Passat B5.5 tdi....... big plans to come
    Audi A3 8p motor way work horse
    Nissan Skyline r33 gts-t ..... my mid life crisis fun car

  29. #28
    "Stick a V8 in it!"

    Status
    Online
    Join Date
    Jan 2008
    Location
    Glenrothes, Fife, Scotland
    Posts
    15,370
    No if the pump was broken it'd overheat badly.

    That said, if the cambelts coming out, its daft not to do the water pump while your in there anyway.

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  30. #29
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    I think I'm just going to bite the bullet, as my garage will do cambelt, thermostat, water pump and diagnose my boost problem for £440....... Not bad, considering Audi wanted£765 to do cambelt and a further £225 to thermostat....... I ain't no mug!
    Passat B5.5 tdi....... big plans to come
    Audi A3 8p motor way work horse
    Nissan Skyline r33 gts-t ..... my mid life crisis fun car

  31. #30
    S4_dan's Avatar
    Fire up the Quattro!

    Status
    Offline
    Join Date
    Jan 2006
    Location
    Somewhere in the Howardian Hills!
    Posts
    1,596
    Quote Originally Posted by aragorn View Post
    no.

    The one at the back comes in two styles, depending on the year of the car. D-shaped on later cars (~2000 onwards) and Square on earlier cars. Older ones were blue, but they are all now green from the dealer.


    The one down the front is usually black and is a totally different type of sensor to the one at the rear.
    I bought a square coolant sensor late last year and it was blue! I got it from my mate at VW and is a genuine part.


    Audi-A6............DON'T BUY ANY COOLANT SENSOR OFF EBAY! I DID AND FITTED ONE TO MY 2.8 V6 AND IT RAN LIKE A BIG OF SH*T!! WENT STRAIGHT TO MY MATE AT VW AND BOUGHT A GENUINE ITEM AND IT SOLVED MY ISSUES.

    Sorry for shouting, just wanted to get my point across about buying sensors off eBay.
    2002 2.5 V6 Quattro
    Mods Done: Q5 Rear aero wiper. Front ambient light install. Led number plate lens. Towbar with 13pin electrics.
    Mods to complete: Sport shocks to go with Eibach pro springs. Fit 17" 5 star matt black wheels. Fix lack of torque at low revs. Get a custom exhaust system fitted.

    FOR SALE - Eibach Pro Sport springs for a 2.5 V6 B6/7 PM ME.

  32. #31
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    Quote Originally Posted by S4_dan View Post
    I bought a square coolant sensor late last year and it was blue! I got it from my mate at VW and is a genuine part.


    Audi-A6............DON'T BUY ANY COOLANT SENSOR OFF EBAY! I DID AND FITTED ONE TO MY 2.8 V6 AND IT RAN LIKE A BIG OF SH*T!! WENT STRAIGHT TO MY MATE AT VW AND BOUGHT A GENUINE ITEM AND IT SOLVED MY ISSUES.

    Sorry for shouting, just wanted to get my point across about buying sensors off eBay.

    yeah i know, got from audi, never solved the problem any way
    Passat B5.5 tdi....... big plans to come
    Audi A3 8p motor way work horse
    Nissan Skyline r33 gts-t ..... my mid life crisis fun car

  33. #32
    audi-a6's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Aug 2011
    Location
    christchurch
    Posts
    489
    okay, tested it again, left running for a half an hour, temp went to about 75 then i just reved it to 2 and half k and temp dropped right down..........

    so im guessing its the thermostat?
    Passat B5.5 tdi....... big plans to come
    Audi A3 8p motor way work horse
    Nissan Skyline r33 gts-t ..... my mid life crisis fun car

 

 

Similar Threads

  1. Was pretty disappointed to see...
    By ccm1 in forum General Chat
    Replies: 36
    Last Post: 3rd November 2011, 06:31
  2. Well I got it, pretty well on time
    By Brett Butler in forum A3/S3/Sportback (8P Chassis)
    Replies: 11
    Last Post: 26th March 2010, 09:14
  3. Think I'm pretty much done...
    By Scott in forum A3/S3/Sportback (8P Chassis)
    Replies: 4
    Last Post: 19th December 2009, 08:45
  4. These look pretty...
    By Khufu in forum A3/S3/Sportback (8P Chassis)
    Replies: 5
    Last Post: 21st September 2009, 18:24
  5. This is pretty funny.
    By mattv6 in forum You Tube Links
    Replies: 6
    Last Post: 24th April 2009, 19:31

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Single Sign On provided by vBSSO

Garage Plus, Vendor Tools vBulletin Plugins by Drive Thru Online, Inc.

Content Relevant URLs by vBSEO