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post #1 of 19 (permalink) Old 08-13-2010, 07:56 AM Thread Starter
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Unhappy no spark

I am new to this forum, but a friend recomended it for the quality and technical ability of the others here. I recently purchased a 91 90quattro20v, the car looks good and is decent shape. One big problem, no spark. I have had a couple of local euro mechanics look at it. After 2 months of sitting in their garrages with no results, I am in need of help. It has a new distributor, battery, fuel pump, crankshaft position sensor and plenty of fresh fuel, . Any help would be greatly appreciated.
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post #2 of 19 (permalink) Old 08-13-2010, 01:39 PM
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ECU problem? maybe its the cps if these cars have them
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post #3 of 19 (permalink) Old 08-13-2010, 02:37 PM Thread Starter
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I have scoured this forum and beleieve that I need to check the cam position sensor, the engine speed sensor and the ECU. After reviewing several pages worth of posts on the same issue, there seems to be quite a bit that can cause this problem. I will get the car back from the shop where it has been stored and not worked on, and see if the push starting method will get it going, if not, the ECU is getting replaced. I love this car, but would love it more if it ran!
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post #4 of 19 (permalink) Old 08-13-2010, 05:57 PM
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Hey slick90...welcome to the forums. Before you go replacing the ECU...Make sure you have checked the ignition coil located on the firewall. I had the same issue about 2 months ago and found it not to be the coil itself but the coil module located right beside it. If the module is not putting the correct amount of amperage to the coil...it will not fire. I bet it's cranking just fine...just not firing right? I'm betting that's your problem. Get back to me before you pull that ECU out. Cheers!


Greg!


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V-TECH THIS, YOU HONDA PUNKS!!!


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post #5 of 19 (permalink) Old 08-14-2010, 08:53 PM
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Hey! I had no spark because of cam sensor failure - on AAH engine with MPI ignition. And there it was detectable with Vagcom.

What is your engine code, what type of ignition?

Agreed with evo1 - check the coil - I remember there was a test for this by measuring resistance.
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post #6 of 19 (permalink) Old 08-16-2010, 08:02 AM Thread Starter
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Thanks guys, I will get them checked right away. The shop has had the car for over a month and it apparently isn't much of a priority for them. I will get it back and perform the suggested checks and let you know how it goes. How cool is it that I can get more answers here for free than at a shop I was paying to fox the car?
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post #7 of 19 (permalink) Old 08-16-2010, 08:16 AM
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It's Fear!

Most shops are scared of Audi's. There is a lot to them and parts are pricey. So one little mistake on there part could cost them a chunk of change. You should go get your car. I mean if they have had it for a month and havent even tried to look at it they are just wasting your time. Good Luck!!!
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post #8 of 19 (permalink) Old 08-17-2010, 11:49 AM Thread Starter
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coil module

Would anyone have a part number for the coil module? I brought the car back home and have the part off, but there are no numbers on it.
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post #9 of 19 (permalink) Old 08-17-2010, 02:44 PM
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F3000-50430 is this correct? its the modual
i use this site. All OEM Audi Parts - Discount Online Parts Catalog
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post #10 of 19 (permalink) Old 08-17-2010, 02:44 PM
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