My 1995 Audi A6 was running great, then the drain under the cowl became clogged and water backed up into the front and rear passenger seats -- 3 inches standing water. I fixed the clog and shop vaced out the water. The ecu and wiring harness are wet, I am drying it out. The car starts but runs very rough - smell strong gas and oil pressure (oil cal) light blinks. Is the ecu shot? I am open to suggestions.
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Re: ecu is wet, what do I do?
Leave it to dry out for about a week ,parked under cover with battery disconnected and all the doors open ,and then pray to whoever takes your fancy ,allah sound good you may get a few virgins ,but i prefer odin and valhala
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cowl drain is located under the cowl. the cowl is the plastic trim cover in front of the lower portion of your windshield. you may have excessive leaves or debri that clogged the drain and is not allowing water to flow out from the behind the empty space behind the firewall.
Is it coolant or water? If its coolant could be leaking heater core. If it is water chances are its coming out of the heater box because the drain for the water that pours on the cowl under the wipers is clogged and it is pooling up and going into your cabin filter or fresh air intake for the cabin. Take off the wipers and cowl, clean.
you need to look outside the car. low on the fire wall. it come from inside heater box, so you can not see it inside the car. should have a short rubber line sticking out, but sometimes they fall off. sometime you may need to look from under the car, up towards the back of the eninge, but in the firewall area.
take the wiper off on the passenager side and remove the plastic under that and make sure the drain is not clog with anthing give these websites a try www.alldatadiy.com and www.autozone.com wish you the best of luck Michigan Man.
I woul look to see if the cowl drains on wither side of the cowl panel are clear form leaves and dirt. When it is dry, pour water into the cowl vent, under the hood. Water should drain out behind each tire, from the body. Ithe water does not run out, you will need to remove the cowl, and clean out the drains.
On right hand drive vehicles there is a 'convenience' ECU under the front passenger side carpet (I think it swaps and is under the right hand side in a left hand drive) This ECU operates and controls all the systems you have described, they suffer water damage very easily. This will be the cause of your problems and unfortunately will need to be replaced and coded. The ECU was put in this place to keep it well out of the way of any contamination such as water, then the cars ended up leaking water straight on to it! The carpet in the front can be lifted up from the edge by the door with a few trims removed. You probably had quite a lot of water in there because water runs to the back of the car, by the time its visible in the back a lot of water has entered. Let me know if you want anymore imformation.
Wow I thought they would have fixed this on the newer body style. My old 2000 A6 had the same issue. There is a drain in front of the bulkhead that gets blocked, in my case by pine needles from my tree. I used a coat hanger to clear it and then cleaned it every couple of months and no more drowning carpet. It used to be next to the battery(which they moved to the trunk) under the windshield wiper motor. I haven't checked the exact location on my 2005 but good to know it's still an issue.