'99 A8 Water continues to get into the engine control module

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Oct 7, 2005 | 06:40 AM

geroram

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'99 A8 Water continues to get into the engine control module

Water continues to get into the engine control module. I unclogged the drains, the seal looks good and all the screws are working. Last night I sealed it with silicone. I cleaned all the connections with electrical contact spray and got it to start fine, but continues to give me the same codes as before. What could possibly be causing the water to get in? and as an after thought did I do the right thing by sealing it with silicone.

Thanks in advance,
Oscar

Oct 7, 2005 | 06:43 AM

PaulW

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From: Wilbur by the Sea

Try some test

Try cleaning it out, then put the cover back on, then spray just the top with a hose. Inspect....is it wet again? If so, where is it wet on the interior walls? That's your problem.

If not, it's coming from somewhere below and coming up.....

Oct 7, 2005 | 06:54 AM

geroram

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Re: Try some test

Thanks Paul.

How can water come up from below?

Oct 7, 2005 | 06:56 AM

geroram

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Re: Try some test

By the way I sealed the cover with silicone

Thanks,
Oscar

Oct 7, 2005 | 07:17 AM

PaulW

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From: Wilbur by the Sea

There is another set of drains

Somebody here had a similar problem before, there is a set of drains somewhere inboard of the electronics box. Just aft of the motor as I recall.....but don't remember exactly.

If it's not sealing with the factory seal, then something is either wrong with the sealing surface of you need a new seal.

My first bet would be that the two are not mating correctly.

Oct 7, 2005 | 01:12 PM

geroram

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Re: There is another set of drains

Thanks Paul.
I'll look for the drains

Oscar

Oct 9, 2005 | 07:11 AM

geroram

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Re: There is another set of drains

Paul,
Trying to clean the ECU, I bent 1 prong and almost broke another.
Now I have a continuos check engine light that cannot be turned off.

Should I buy a new ECU and change the plugs that connect to it?
Any suggestions?

Thanks,
Oscar