Question about 1992 Audi 100

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Audi 100 wont start no electricity on spark plug

I have an audi 100 V6 2.8L that wont start. Tried Isolating the problem. Ive changed alternator, Control Module and Coil igniter still wont fire..Ive tried testing if there is electricity on spark plugs but I cant detect any spark. Im at a lost? appreciate any help you can advise.

Thanks

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  • chitobautist Jan 14, 2009

    Thanks for the advise ive check grounding and its solid. can you please advise other options. fuel pump also checked and theres good supplyof fuel. thanks

  • wbard Jan 27, 2009

    Same problem. I have changed the ignition module, electronic control unit, and still no spark at the coil.

  • chitobautist Apr 01, 2009

    This is a follow up on the problem tread above. I did some isolation tests so far grounding is ok, computers are all ok ignition coil ok but still no spark on plugs. I will try to trace power from main ignition key to engine control unit to validate! you might have other idea's aside from this?

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  • 51 Answers

Have you looked at the engine earth/ground cable, run another earth from the negative terminal to the body(wheel arch) and then to the engine block and try again. As you would know its a proccess of illimination and this was the most simple thing that came to mind. Let me know how it goes.

Posted on Jan 12, 2009

  • Vince Jan 14, 2009

    Did you change anything that might have thrown off the timing?I see you have cahanged the coil but you may have fowled the plugs when the bad coil was in,ive had this happen before. Change the plugs,check the timing. I hope this helps.

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