Engine Spike misfire Jump then Check engine, TC, ABS lights come on 01 a6

[domw94]

01 Audi A6 2.7t . Not to long ago this started to occur. I'd just be driving and randomly the car would jump, a spike maybe a misfire and right after the CE, TC, ABS lights would come on then stay on for a minute then go away. It's kind of strange. This happens very randomly. Sometimes once every 7 days sometimes 3 times a day. This usually happens during lower speeds but has happened while going faster (scary sometimes)

Anybody have an idea of what this might be?

Thank you!

[a4kamila6]

This has happened to me on my b5 2.8 when my abs problem began. Unplugged abs controller and driving without abs and it happened once after that and i theorize its related to abs controller or something. quite honestly im not sure but i had it happen twice and nothing since then. its like a slight jitter, like a misfire and then back to normal.


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[a4kamila6]

when i say it happened twice i mean it happened once before i unplugged abs controller and then once again after. Have to clean all my sensors. One is replaced already. Front axles are replaced so i know its not the front tone rings. That leaves abs controller, three abs sensors and two rear tone rings for me. Process of elimination i guess.


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[domw94]

Yea. I'd say it's more than just a slight jitter for me. It's a pretty heavy jump and definitely noticeable. I had a problem with the engine misfiring under rapid acceleration sometimes in the past but this seems different.

[a4kamila6]

It only happened to me when at idle in traffic and it felt like the rpms were dropping for a sec or two


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[a4kamila6]

Happened again today, check engine light blinked, felt like a misfire. Going to check my plugs when i get home. They are platinum bosches with 20k on em. Was thinking maybe ignition coil is failing? Ignition system is different in our cars. 2.8 has one coil pack.


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[domw94]

I would check you're spark plugs for sure. I had a misfire problem that I thought were the coils but it ended up being the plugs

[a4kamila6]

For what its worth scanned the car and came up with

Dont know if evap is related to our problem? Sometimes in the morning when i start my car you can literally hear the gas being sucked by the gas pump or through the tank and I read its my fault because i have poured gas in many times while running the car. Could that be related to our issue? Not enough fuel delivery and that causes hick up? I highly doubt my plugs are bad but ill check along with the coils and coil pack.


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[domw94]

Possibly. Post it up as a thread, see what people say

[a4kamila6]

My apologies for hijacking your thread, i just thought we had same problem.


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