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    Thread: CEL - emissions workshop warning

    1. Member pilotboy17's Avatar
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      12-27-2005 03:50 PM #1
      Like the topic says, i have been ignoring this check engine light for awhile. It keeps saying emmisions workshop. Sometimes i start my engine it doesn't show up and sometimes it does. sometimes it pops up at random times and disappears.

      Is it the O2 sensor?


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      12-27-2005 03:54 PM #2
      you have one of the following, or a mix of the following:

      -bad spark plug
      -bad spark plug wires
      -cracked ignition coil pack

      go to the DIY's and there are write-ups with picks for all of the above repirs/maintenance.


    3. Member pilotboy17's Avatar
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      12-27-2005 07:34 PM #3
      Quote, originally posted by LSinLV »
      you have one of the following, or a mix of the following:

      -bad spark plug
      -bad spark plug wires
      -cracked ignition coil pack

      go to the DIY's and there are write-ups with picks for all of the above repirs/maintenance.

      So it isn't the O2 sensor...someone said if i got that changed it would be it. But i guess it's time to purchase some aftermarket spark plug and wires. i've been meaning to do that later but maybe i'll try now to see if it'll fix the problem i'm having.


    4. Member MacDalund's Avatar
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      12-28-2005 01:55 AM #4
      Please get a scan first and find out exactly what's going on before you throw parts at your car.
      Rich Green
      2000 Jetta VR6

    5. Member MacDalund's Avatar
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      12-28-2005 01:56 AM #5
      Also, don't get aftermarket plugs. The OEM NGK plugs are the best for your motor. Getting anything else will get you nothing in performance.
      Rich Green
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    6. Administrator BHB's Avatar
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      12-28-2005 01:57 AM #6
      Quote, originally posted by LSinLV »
      you have one of the following, or a mix of the following:

      -bad spark plug
      -bad spark plug wires
      -cracked ignition coil pack

      let me add.... bas o2 sensor.... bad MAF, etc. You've gotta get the car scanned to be sure.

      Current: 2011 Jeep Grand Cherokee 5.7 Hemi 4x4, 2013 BMW 650GS Sertao, BMW 1150RT
      Gone: 2010 Audi S4; 2008 GTI; 2007 Audi A6; 2004 Audi allroad 2.7T; 2001 Audi A6 2.7T; 1999.5 Mk4 Jetta VR6; 1991 Jeep Cherokee 4.0 4x4

    7. Member pilotboy17's Avatar
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      12-28-2005 03:45 PM #7
      thanks you guys. i'll get it scanned.

    8. Member pilotboy17's Avatar
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      12-28-2005 03:47 PM #8

      Quote, originally posted by MacDalund »
      Also, don't get aftermarket plugs. The OEM NGK plugs are the best for your motor. Getting anything else will get you nothing in performance.

      Ok, I will get the NGK spark plugs but aftermarket spark plug wires are ok, right? It's kinda already late for me to ask this because I just put in an order for the Neuspeed plug wires. I just wanna know.


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      12-28-2005 03:48 PM #9
      Quote, originally posted by pilotboy17 »


      Ok, I will get the NGK spark plugs but aftermarket spark plug wires are ok, right? It's kinda already late for me to ask this because I just put in an order for the Neuspeed plug wires. I just wanna know.

      save your $$$, contact GPR 800-321-5432 they have OEM wires in red with pullers for $85....and I run them in my highly modded car...no issues...and OEM works right, and fits....


    10. Member RavinJetta's Avatar
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      12-28-2005 03:50 PM #10
      Neuspeed wires should be fine. Is the cel flashing? Usually if it is a plug or wire the CEL will be flashing. If it isn't flashing it is usually a O2 sensor or MAF. This is from prior experience

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      12-28-2005 03:53 PM #11
      2000 VR6's had faulty cats go bad around 60-80k.

    12. Member pilotboy17's Avatar
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      12-28-2005 03:59 PM #12
      Quote, originally posted by RavinJetta »
      Neuspeed wires should be fine. Is the cel flashing? Usually if it is a plug or wire the CEL will be flashing. If it isn't flashing it is usually a O2 sensor or MAF. This is from prior experience

      Nope, it's not flashing. When it comes on it stays solid. But it doesn't come on all the time. Sometimes I start the car its on for the whole day. Maybe the next day it won't feel like showing up.

      I'll try to get it scanned when i can, the nearest VW dealership is 100 miles away. but whatever it is, i doubt it is serious threat to my engine (i hope not). I've been driving like this for a few months.


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      12-28-2005 04:03 PM #13
      Well just FYI, SAME THING happened to me. CEL would come on every now and again for 3 months. I changed plugs, wires, o2's and MAF. Then the cat finally clogged all the way and I was without a car for 5 months.

      My car never drove the same way again even after a new cat.


    14. Member RavinJetta's Avatar
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      12-28-2005 04:04 PM #14
      Quote, originally posted by JKREW »
      2000 VR6's had faulty cats go bad around 60-80k.

      Hmm I am still on my stock cat at 93k.

    15. Member pilotboy17's Avatar
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      12-28-2005 04:16 PM #15
      Quote, originally posted by JKREW »
      Well just FYI, SAME THING happened to me. CEL would come on every now and again for 3 months. I changed plugs, wires, o2's and MAF. Then the cat finally clogged all the way and I was without a car for 5 months.

      My car never drove the same way again even after a new cat.

      yes i'm still on my stock cat at 100,000 miles. but i was planning to get an aftermarket one soon after my cat back exhaust.


    16. Member MacDalund's Avatar
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      12-28-2005 06:36 PM #16
      My CEL was on and I've just replaced the o2 sensors as a result. I threw P0420- the dreaded cat code. The CEL just came back a couple days ago on and I'm getting VAG-COM'd tomorrow. I'm at 121k on the stock cat. I'm now pretty sure the cat is going bad.
      Rich Green
      2000 Jetta VR6

    17. Junior Member cstern0's Avatar
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      12-29-2005 05:24 PM #17
      I'm having the same problem too. Does anyone have any experience with having a cat replaced. After searching I came up with 6-8 hours of labor and up to $800 to replace. I was thinking about just having a custom exhaust made, it's looking like that would be about $400-500. Any ideas?
      VRSociety Member # 11

    18. 12-29-2005 06:06 PM #18
      yes it would be about 6 hours in labor but if you have the tools you can do it yourself. it only takes about two hours depending on how frozen or corroded your bolts are. i just replaced my whole exhaust on my 97 vr6 and it wasn't that bad. took me only 4 hours. dealer was asking for $1000 +

    19. 12-29-2005 06:16 PM #19
      Quote, originally posted by MacDalund »
      My CEL was on and I've just replaced the o2 sensors as a result. I threw P0420- the dreaded cat code. The CEL just came back a couple days ago on and I'm getting VAG-COM'd tomorrow. I'm at 121k on the stock cat. I'm now pretty sure the cat is going bad.

      You aren't going to get rid of the P0420 code by changing the O2 sensors. You must have an aftermarket exhaust. There was a post awhile back about this. You need to use spark plug arresters to space the O2 sensor out farther. With the increased exhaust flow, it throws off the readings. I tried finding the post but couldn't.

      As for the original poster, please stop trying to guess what the problem may be and get your ECU scanned. That is the only way you're going to know what's up with your car. You can guess until you turn blue and you've spent all your money and STILL not know if you solved the problem. Before you change any parts, save yourself some time and money and get the ECU scanned.


    20. Member MacDalund's Avatar
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      12-29-2005 06:20 PM #20
      Quote, originally posted by DJKeebler »

      You aren't going to get rid of the P0420 code by changing the O2 sensors. You must have an aftermarket exhaust. There was a post awhile back about this. You need to use spark plug arresters to space the O2 sensor out farther. With the increased exhaust flow, it throws off the readings. I tried finding the post but couldn't.

      Original exhaust components. The o2 sensors were done to completely rule out any chance that it isn't the cat. I wanted to do them as preventative mainenance anyway even before this all started.

      Rich Green
      2000 Jetta VR6

    21. 12-29-2005 06:26 PM #21
      Quote, originally posted by MacDalund »
      Please get a scan first and find out exactly what's going on before you throw parts at your car.

      Yes, even if its just from AutoZone and you look up the P codes....


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