Volks AutosSky Insurance
Results 1 to 16 of 16

Thread: V6 HT leads

  1. #1
    S4_dan's Avatar
    Fire up the Quattro!

    Status
    Offline
    Join Date
    Jan 2006
    Location
    Somewhere in the Howardian Hills!
    Posts
    1,596

    V6 HT leads

    Hi,

    Still have a really random, extremely intermittent hesitation\miss-fire on my 2.8. It can happen on a flat road at steady constant speed, or it will happen on an slight incline. I can never get it to repeat. It does it when it wants to!

    The plugs and air filter are new. As it most other parts on the engine. Changing the TB hasn't made a difference. Only thing that does make a difference when its doing it, is putting my foot to the floor on the loud pedal and then back to where it was.

    My HT leads are unknown in terms of age. Does anyone have a set of working leads that i could borrow to see if it rectifies anything? I will pay for postage to and from and chuck in some beer tokens. That is still alot cheaper than a new set of HT leads!

    Also, there is no new DTC's. only my throttle body one which I have had sine owning the car and even changing the TB's over its still there!

    Dan
    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.

  2. # ADS
    ADS
    Join Date
    Always
    Location
    Global
    Posts
    Many
     
  3. #2
    audiv6quattro's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Dec 2010
    Location
    East sussex
    Posts
    392
    Hi mate I haven't got ht leads sorry but I've got a coil pack that I think is the same as yours if you want that mate,
    1996 A4 2.6 v6 quattro,love the car hate the cost!!

  4. #3
    S4_dan's Avatar
    Fire up the Quattro!

    Status
    Offline
    Join Date
    Jan 2006
    Location
    Somewhere in the Howardian Hills!
    Posts
    1,596
    It could be my coil pack. I didn't think of that to be honest! Yeah if i could try that, that would be great.
    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.

  5. #4
    audiv6quattro's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Dec 2010
    Location
    East sussex
    Posts
    392
    Ok mate no worries here's part number 078 905 101c if you double check part numbers if it's the same pm me address and I'll send it to you,
    1996 A4 2.6 v6 quattro,love the car hate the cost!!

  6. #5
    S4_dan's Avatar
    Fire up the Quattro!

    Status
    Offline
    Join Date
    Jan 2006
    Location
    Somewhere in the Howardian Hills!
    Posts
    1,596
    Ok will check it tomorrow at work and let you know.

    Cheers.
    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.

  7. #6
    audiv6quattro's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Dec 2010
    Location
    East sussex
    Posts
    392
    Ok mate, hopefully the right part as its just sitting here doing nothing and would rather it go to good use lol.
    1996 A4 2.6 v6 quattro,love the car hate the cost!!

  8. #7
    Reverse Gear

    Status
    Offline
    Join Date
    Mar 2012
    Location
    Hartland , Devon
    Posts
    16
    have you taken out the plugs as they will show if HT leads are working or which ones are not .
    if plug is black or wet then its not working , plug should be a cream white colour.
    i bought a set of HT leads from ebay for my 2.8 cost 90

  9. #8
    Reverse Gear

    Status
    Offline
    Join Date
    Mar 2012
    Location
    Hartland , Devon
    Posts
    16
    also i know my HT leads needed replacing as when engine running i could hear tickinng , snick snick so i know not to tuch as would get a belt , new leads

  10. #9
    S4_dan's Avatar
    Fire up the Quattro!

    Status
    Offline
    Join Date
    Jan 2006
    Location
    Somewhere in the Howardian Hills!
    Posts
    1,596
    AudiV6Quattro... my part number is 078 905 104. Do you have ETKA do a part ref check?


    GISXER711....I can touch my leads although they do have a plastic tubing over the silicone wire. I have also had the car running in pitch black to see if i can see the wires lighting up like blackpool illuminations! The spark plugs are about 3k miles/5 months old. I will remove and check, but as its really intermittent i'd stab a guess that the plugs will be pretty much all the same.
    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.

  11. #10
    audiv6quattro's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Dec 2010
    Location
    East sussex
    Posts
    392
    Hi mate sorry I don't have etka but I did type part number into eBay and it's coming up as 2.6/2.8 audi a4 coil pack, I know that's not really that reliable but it might help
    1996 A4 2.6 v6 quattro,love the car hate the cost!!

  12. #11
    6th Gear

    Status
    Offline
    Join Date
    Aug 2010
    Posts
    1,540
    dont see it being leads or the coil by the way you describe the fault as being under light throttle then clears if you boot it.
    a coil or lead letting the spark jump to earth would be most noticable under heavy throttle/full load/lowish revs when the coil has to produce more voltage because the spark finds it the hardest to jump the plug gap under those conditions.

    far more likely would be a dodgy injector intermittently not spraying correctly under light throttle/short duration.

    take them all off and send them off to be cleaned ultrasonically.
    ASNU Fuel Injector cleaning by post

  13. #12
    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 murran View Post
    dont see it being leads or the coil by the way you describe the fault as being under light throttle then clears if you boot it.
    a coil or lead letting the spark jump to earth would be most noticable under heavy throttle/full load/lowish revs when the coil has to produce more voltage because the spark finds it the hardest to jump the plug gap under those conditions.

    far more likely would be a dodgy injector intermittently not spraying correctly under light throttle/short duration.

    take them all off and send them off to be cleaned ultrasonically.
    ASNU Fuel Injector cleaning by post
    It's not always under light throttling though. It can do it whilst accelerating. When it does happen, i ALWAYS get 2 'pops' in the exhaust, then immediately, it's back to normal operation. Always to 'pops', never 1 or 3.

    Timing belt was replaced last year and i've covered over 8k miles before this issue started happen.

    Thinking coil pack/ leads could be logical in going to earth briefly??
    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.

  14. #13
    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 audiv6quattro View Post
    Hi mate sorry I don't have etka but I did type part number into eBay and it's coming up as 2.6/2.8 audi a4 coil pack, I know that's not really that reliable but it might help
    Just done that too, and your coils are individual with a llooonnnggg lead for the coils to connect to the car. Mine has very short lead and a 5 pin socket that i use. So i don't think those will fit my car sadly. :-(

    Trying to get hold of ETKA. I do have a copy somewhere....... but where?? lol
    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.

  15. #14
    audiv6quattro's Avatar
    2nd Gear

    Status
    Offline
    Join Date
    Dec 2010
    Location
    East sussex
    Posts
    392
    Ok mate no worries hope you get it sorted though. If it does turn out they can be modified to fit you can use bits of it which I doubt then drop me a pm.
    1996 A4 2.6 v6 quattro,love the car hate the cost!!

  16. #15
    S4_dan's Avatar
    Fire up the Quattro!

    Status
    Offline
    Join Date
    Jan 2006
    Location
    Somewhere in the Howardian Hills!
    Posts
    1,596
    Ok cheers. Just run your part number through ETKA and it comes up with: 'Part number 078 905 101c not in stamm' but it finds my part number of 078 905 104 ok??

    Its version 7 update 622, if anyone can help?

    Edit:

    Sorted it now. Your coil is for ABC, AAH, ACZ V6 engines. (are they all 12V engines?)

    for 078 905 104 it only fits the ACK lump. So looks like I'm gonna need that specific part number?!
    Last edited by S4_dan; 22nd March 2012 at 11:28.
    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.

  17. #16
    6th Gear

    Status
    Offline
    Join Date
    Aug 2010
    Posts
    1,540
    yeah abc aah engines are the 12v ones.

    it possibly might be spark related then.

    but on the other hand if the injector isnt spraying properly the fuel might be getting sprayed at the inlet port wall and dribbling in thru the valve. then not burning the fuel properly but excess fuel is igniting off the red hot exhaust valve as it exits the cylinder?

    ive seen first hand on a bmw e36 m52b25 engine, the side of a piston melted away due to a leaking injector not spraying properly.

    just throwing ideas around here.

 

 

Similar Threads

  1. VAGCOM Leads
    By edition in forum A3/S3/Sportback (8P Chassis)
    Replies: 34
    Last Post: 3rd July 2010, 14:54
  2. leads confusion
    By goon in forum In-Car Entertainment
    Replies: 7
    Last Post: 19th May 2010, 16:02
  3. Ht Leads / Ignition Leads
    By shawshankuk in forum A3/S3 Forum (8L Chassis)
    Replies: 3
    Last Post: 22nd December 2006, 23:10
  4. 2.6 V6 HT leads
    By FezzR in forum A4/S4 forum(B5 Chassis)
    Replies: 0
    Last Post: 6th August 2005, 10:11
  5. Plug leads
    By imported_CivicJim in forum Detailing
    Replies: 4
    Last Post: 13th November 2004, 16:22

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