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  1. #1
    Active Member One Ring
    Join Date
    Jul 07 2009
    AZ Member #
    44687
    My Garage
    Audi B6 A4 1.8T
    Location
    203, Connecticut

    Exclamation Check engine light flashing, car shaking...help!

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    Driving around tonight, everything going just fine. Put the car in park, and I noticed it started shaking...a lot. I looked down and my check engine light was flashing.
    (I have an A4 1.8T (automatic) )
    It's having a lot of trouble accelerating/switching gears, esp up hills. I've been told it could either be my coil packs, cat, or transmission...any ideas?

  2. #2
    Veteran Member Four Rings Wet0willy01's Avatar
    Join Date
    Nov 17 2008
    AZ Member #
    35356
    My Garage
    05 USP, 68 Camaro, 00 Cavalier
    Location
    Lancaster, PA

    Re: Check engine light flashing, car shaking...help!

    ignition coil ...the end
    -Andrew
    1999.5 Santorin Blue 1.8t TIP Quattro
    2005 Dolphin Grey Ultra Sport
    HTA3582R 1.8L
    2000 Black S4 6 speed

  3. #3
    Veteran Member Four Rings
    Join Date
    Apr 08 2009
    AZ Member #
    40936
    Location
    Connecticut

    Re: Check engine light flashing, car shaking...help!

    it might be your turbo.. you should go ahead and order a GTRS.. and if that's not the fix, just sell me the GTRS for cheap. j/k.. it has to be the coil pack like weto stated.. the end.

  4. #4
    Veteran Member Four Rings aaaudiprotein's Avatar
    Join Date
    Apr 16 2007
    AZ Member #
    17337
    My Garage
    2003 RS6
    Location
    Chicago Burbsss
    Items for Sale

    Re: Check engine light flashing, car shaking...help!

    your coilpack.
    now plz send mail me a gallon of apple juice
    BLACKHAWKS 2010 AND 2013 STANLEY CUP CHAMPIONS
    Windows 7 WAS MY IDEA

  5. #5
    Veteran Member Four Rings Wet0willy01's Avatar
    Join Date
    Nov 17 2008
    AZ Member #
    35356
    My Garage
    05 USP, 68 Camaro, 00 Cavalier
    Location
    Lancaster, PA

    Re: Check engine light flashing, car shaking...help!

    buy at least two, one to replace the bad one and a spare for the trunk. It will happen again.
    -Andrew
    1999.5 Santorin Blue 1.8t TIP Quattro
    2005 Dolphin Grey Ultra Sport
    HTA3582R 1.8L
    2000 Black S4 6 speed

  6. #6
    Veteran Member Four Rings Wet0willy01's Avatar
    Join Date
    Nov 17 2008
    AZ Member #
    35356
    My Garage
    05 USP, 68 Camaro, 00 Cavalier
    Location
    Lancaster, PA

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by aaaudiprotein View Post
    your coilpack.
    now plz send mail me a gallon of apple juice
    I'll take a lager....
    -Andrew
    1999.5 Santorin Blue 1.8t TIP Quattro
    2005 Dolphin Grey Ultra Sport
    HTA3582R 1.8L
    2000 Black S4 6 speed

  7. #7
    Deactivated Four Rings
    Join Date
    Sep 30 2008
    AZ Member #
    33626
    Location
    n/a

    Re: Check engine light flashing, car shaking...help!

    it's your fluxcapacitor

  8. #8
    Veteran Member Three Rings burns420's Avatar
    Join Date
    Oct 20 2007
    AZ Member #
    21950
    Location
    Toronto

    Re: Check engine light flashing, car shaking...help!

    even if you replace the coilpack and it turns out to be something else, you will eventually have a coilpack go bad so it wont be money wasted picking up a couple.

  9. #9
    Registered Member One Ring
    Join Date
    Mar 26 2008
    AZ Member #
    26894
    Location
    Palmdale, California

    Re: Check engine light flashing, car shaking...help!

    Switch all of the coilpacks out. I had my 1 and 3 go out and i switched them out. 60 miles later 2 and 4 went out. Go to genuinevwaudiparts.com for the best price. Its an easy fix.

  10. #10
    Established Member Two Rings
    Join Date
    Dec 08 2007
    AZ Member #
    23199
    Location
    Easton,PA

    Re: Check engine light flashing, car shaking...help!

    scan the car and see what cylinder or cylinders are misfiring.
    2002 A4 1.8t 5 speed maunal-revo stage 2

  11. #11
    Senior Member Two Rings beegeezy's Avatar
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    Apr 26 2009
    AZ Member #
    41708
    Location
    Austin, tx

    Re: Check engine light flashing, car shaking...help!

    I seem to remember seeing R version coils for sale somewhere for less than $25 each.
    Slow and ugly...

  12. #12
    Senior Member Two Rings dynamic's Avatar
    Join Date
    Apr 22 2007
    AZ Member #
    17490
    My Garage
    2004 A4 3.0 Quattro
    Location
    Tempe, AZ - Maple/Ash

    Re: Check engine light flashing, car shaking...help!

    can someone give me a quick how-to for a 2004 b6 3.0L on how to change the ignition coils? my car is at the dealership and they want $600!!!

  13. #13
    Stage 2 Banner Advertiser Four Rings greg@podi.ca's Avatar
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    Jun 21 2008
    AZ Member #
    30159
    Location
    Seattle, WA

    Re: Check engine light flashing, car shaking...help!

    Change all the coil packs at once...that's the best way to go or more will blow about 2 miles down the road.

    FYI, flashing CEL means continual and severe misfires.

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  14. #14
    Veteran Member Four Rings Valve_Cover's Avatar
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    Aug 06 2009
    AZ Member #
    46040
    My Garage
    MK2 1.8T GTI
    Location
    Qc

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by Wet0willy01 View Post
    buy at least two, one to replace the bad one and a spare for the trunk. It will happen again.

    Am i the only one who replaces all 4 coils at the first sign of failure? I just hate changing just one since they all have the same mileage, i always throw in 4, normally all with new plugs too

    EDIT: lol guess b6sport shares my opinion :P

  15. #15
    Veteran Member Four Rings Smitty2A4's Avatar
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    May 30 2007
    AZ Member #
    18429
    My Garage
    Stage 3 B5 S4 6 Speed l B6 A4 3.0 6 Speed (RIP)
    Location
    Boston MA

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by dynamic View Post
    can someone give me a quick how-to for a 2004 b6 3.0L on how to change the ignition coils? my car is at the dealership and they want $600!!!
    It is a pain in the ass on the 3.0 since they are crammed in there so tightly. I remember I bought 3 of them at the Audi dealer thinking I could do it myself and then I went to attempt it and I could not even get the damn harness un-clipped, then someone mentioned that if you break the harness it costs much much more so I just said F it and had the dealer put in all 6 new ones even though only three were bad. Like mentioned once one goes other tend to go shortly after. I keep the three good ones in my trunk now just in case.

    BTW I just look at my receipt, I paid $40 per coil so $240 for the parts and $210 for labor. $450 total so your price seems a little high. Not saying I got a good deal just that even the dealer should not be charging $600 for this job.
    Looking for a good shop north of Boston, call Eurosport Performance

  16. #16
    Active Member Two Rings
    Join Date
    Mar 28 2008
    AZ Member #
    26989
    Location
    Minneapolis, MN

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by Valve_Cover View Post
    Am i the only one who replaces all 4 coils at the first sign of failure? I just hate changing just one since they all have the same mileage, i always throw in 4, normally all with new plugs too

    EDIT: lol guess b6sport shares my opinion :P
    One went out around 60k, replaced the one, and then another went out within 200 miles. So I just bought a pack of 4 to replace the last 3 and keep a spare in the trunk now.

  17. #17
    Stage 2 Banner Advertiser Four Rings greg@podi.ca's Avatar
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    Jun 21 2008
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    30159
    Location
    Seattle, WA

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by crs View Post
    One went out around 60k, replaced the one, and then another went out within 200 miles. So I just bought a pack of 4 to replace the last 3 and keep a spare in the trunk now.
    Let me get this right: One went bad and you replaced the one, and then another went out not too long after. So after that happens, you decide to only change out the other 3? That doesn't make sense. You should have replaced all 4 after you learned the first time...

    Having one in the trunk is great to get you home when one goes out, but in the future, learn from your errors and replace all 4 regardless

    I'm not hating, just trying to help.

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  18. #18
    Senior Member Three Rings dfwhockey17's Avatar
    Join Date
    Jun 11 2008
    AZ Member #
    29821
    My Garage
    '04 A4 1.8tq Tip, '65 chevelle
    Location
    Fort Worth, Texas

    Re: Check engine light flashing, car shaking...help!

    I know I am going to take some shit for this but I bought 4 new coilpacks at my local O'Reilley Auto Parts for around $25/each. The nice thing about them is they have a lifetime warranty and when one goes bad I take it back and they give me a new one (I find out the closest store that has one in stock and take it there) for free, then it replaces the one I had in the trunk. So far none of them have gone bad, just the ones that came in the car when I bought it, just food for thought.

  19. #19
    Established Member Two Rings Scubasteeve's Avatar
    Join Date
    Aug 28 2009
    AZ Member #
    47041
    My Garage
    Audi A4
    Location
    Mnneapolis

    Re: Check engine light flashing, car shaking...help!

    The best advise I can give you is to buy a OBDII code reader and figure out which cylinders are misfiring. Then just buy a few new ignition coils and replace the ones that are shot, and keep 2 in your trunk.

  20. #20
    Veteran Member Four Rings kievskij's Avatar
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    Jul 30 2009
    AZ Member #
    45725
    My Garage
    2013 C300 Sport
    Location
    Brooklyn

    Re: Check engine light flashing, car shaking...help!

    change all 4 coil packs
    cause if u blew one the other 3 took too much obuse and gonna go fast

  21. #21
    Stage 2 Banner Advertiser Four Rings greg@podi.ca's Avatar
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    Jun 21 2008
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    30159
    Location
    Seattle, WA

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by Scubasteeve View Post
    ...Then just buy a few new ignition coils and replace the ones that are shot, and keep 2 in your trunk.
    Don't do this ^^

    The best advice you can get...period...is to ALWAYS replace ALL coilpacks. Keep a couple spares in your trunk to get you home when one goes out, then take the spares out, put them back in the trunk, and put in 4 new packs.

    OR--

    Keep 4 in your trunk. Replace ALL 4 when one goes out (on the side of the road), then drive to your closest dealer and get 4 more for the trunk.

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  22. #22
    Veteran Member Four Rings kievskij's Avatar
    Join Date
    Jul 30 2009
    AZ Member #
    45725
    My Garage
    2013 C300 Sport
    Location
    Brooklyn

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by 04b6sport View Post
    Don't do this ^^

    The best advice you can get...period...is to ALWAYS replace ALL coilpacks. Keep a couple spares in your trunk to get you home when one goes out, then take the spares out, put them back in the trunk, and put in 4 new packs.

    OR--

    Keep 4 in your trunk. Replace ALL 4 when one goes out (on the side of the road), then drive to your closest dealer and get 4 more for the trunk.
    yeap thats what i do

  23. #23
    Veteran Member Four Rings cruzin210's Avatar
    Join Date
    Dec 28 2005
    AZ Member #
    9434
    My Garage
    B6 A4 1.8TQM
    Location
    Palo Alto

    Re: Check engine light flashing, car shaking...help!

    Can you speak to the reason for changing all 4 when only one goes bad?
    Black and Silver...thats it

    Quote By rds0000:
    "I actually prefer that this little t**l speaks this way, because in an otherwise anonymous environment, it really helps paint a nice picture of who is spewing this nonsense"

  24. #24
    Stage 2 Banner Advertiser Four Rings greg@podi.ca's Avatar
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    Jun 21 2008
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    Seattle, WA

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by cruzin210 View Post
    Can you speak to the reason for changing all 4 when only one goes bad?
    Yes...

    When one goes bad, whether it's because there's too much strain on it or it had some flaw from the factory, there's extra strain put on the rest. Coilpacks are very sensitive and any change in equilibrium will throw everything off.

    If you read a bunch on this subject, almost EVERY time someone changes out a coil pack, another goes bad right down the street. It's because too much strain is put on the remaining packs...so once one goes, the rest are sure to follow.

    It's a pain in the ass, but the only way to keep them all good is to replace them all at the same time.

    Podi offers free shipping to Audizine members! Use promo code AZNOSHIP at checkout!

  25. #25
    Senior Member Three Rings
    Join Date
    Jan 28 2007
    AZ Member #
    15207
    Location
    dallas TX

    Re: Check engine light flashing, car shaking...help!

    Everyone is pointing to coilpacks... waht about vacuum leak... it acts about the same... this is on a 1.8t... also turn on the engine and pop the hood and listen for a loud sucking noise anywhere... if it is a vacuum leak i suggest checking the suction jet pump behind the intake mani.. it looks like a y shaped piece of plastic... good luck....

  26. #26
    Stage 2 Banner Advertiser Four Rings greg@podi.ca's Avatar
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    Jun 21 2008
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    Location
    Seattle, WA

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by ImageX View Post
    Everyone is pointing to coilpacks... waht about vacuum leak... it acts about the same... this is on a 1.8t... also turn on the engine and pop the hood and listen for a loud sucking noise anywhere... if it is a vacuum leak i suggest checking the suction jet pump behind the intake mani.. it looks like a y shaped piece of plastic... good luck....
    That would have to be one gnarly vacuum leak. I've never seen one violently shake the car and show continual/severe misfires....maybe random misfires (but not blinking CEL bad).

    All the symptoms point directly to the coil packs.

    Podi offers free shipping to Audizine members! Use promo code AZNOSHIP at checkout!

  27. #27
    Senior Member Three Rings dfwhockey17's Avatar
    Join Date
    Jun 11 2008
    AZ Member #
    29821
    My Garage
    '04 A4 1.8tq Tip, '65 chevelle
    Location
    Fort Worth, Texas

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by 04b6sport View Post
    Yes...

    When one goes bad, whether it's because there's too much strain on it or it had some flaw from the factory, there's extra strain put on the rest. Coilpacks are very sensitive and any change in equilibrium will throw everything off.

    If you read a bunch on this subject, almost EVERY time someone changes out a coil pack, another goes bad right down the street. It's because too much strain is put on the remaining packs...so once one goes, the rest are sure to follow.

    It's a pain in the ass, but the only way to keep them all good is to replace them all at the same time.
    I have not had that experience AT ALL. I just replaced the bad one and the rest were fine, in the little over a year I have had my car I have only had two fail on me and they were about ten months apart. Replacing all of them seems like overkill to me, but hey, its your money...

  28. #28
    Stage 2 Banner Advertiser Four Rings greg@podi.ca's Avatar
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    Jun 21 2008
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    Seattle, WA

    Re: Check engine light flashing, car shaking...help!

    Quote Originally Posted by dfwhockey17 View Post
    I have not had that experience AT ALL. I just replaced the bad one and the rest were fine, in the little over a year I have had my car I have only had two fail on me and they were about ten months apart. Replacing all of them seems like overkill to me, but hey, its your money...
    That must be nice. I don't know of many people with the same situation as you...but hats off regardless

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  29. #29
    Senior Member Two Rings dynamic's Avatar
    Join Date
    Apr 22 2007
    AZ Member #
    17490
    My Garage
    2004 A4 3.0 Quattro
    Location
    Tempe, AZ - Maple/Ash

    Re: Check engine light flashing, car shaking...help!

    Replaced all 6 today in about an hour. Saved a ton! Thanks for the info...fairly easy DIY.

    Got'em for $22.61/ea at http://genuinevwaudiparts.com



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