Dead ECU !

cuprabaz

Racing 2020VT

Jun 22, 2004

2,357

1

Aberdeenshire

• Mar 27, 2007

• #1

The car had been sitting for a week while we were on holiday. Tried to start it and all we got was the starter motor and nothing else.

After trying the usual suspects plugs, coils packs, fuses etc i tried to run vag-com on it and it wouldn't play ball it just said NO RESPONSE FROM THE CONTROLLER.

We have now removed the ecu from the car and found that it was full of condensation also found that two of the resistors had been fried. There was no sign of any water anywhere near where the ecu is located.

The ecu was totally sealed by some sort of silicone/glue sealant, are the ecu's sealed as standard or has someone sealed it up??

Car has revo stg 2 on it.

Any advise would be appreciated.

 

goble

Jun 28, 2001

1,533

0

• Mar 27, 2007

• #2

sealed by greyish sealant.
common problem if it hasnt got the black strip over the top to prevent water going into multiplugs then into ecu or your drain holes are blocked

 

cuprabaz

Racing 2020VT

Jun 22, 2004

2,357

1

Aberdeenshire

• Mar 27, 2007

• #3

The poly cover is missing but the bulk of the condesation was on the boards.

I'll take a picture of the board and the two dead resistor because my bro needs to know what value they are so he can replace them.

 

cuprabaz

Racing 2020VT

Jun 22, 2004

2,357

1

Aberdeenshire

• Mar 27, 2007

• #4

There are no drainage holes on the ecu casing!

 

Fl@pper

Back older greyer and less oilier but always hope

Jun 19, 2001

12,368

25

Gloucester

• Mar 27, 2007

• #5

cuprabaz said:

There was no sign of any water anywhere near where the ecu is located.
.

Click to expand...

any signs of dust or dirt ?

 

goble

Jun 28, 2001

1,533

0

• Mar 27, 2007

• #6

nah in the scuttle area above each wing!

 

cuprabaz

Racing 2020VT

Jun 22, 2004

2,357

1

Aberdeenshire

• Mar 27, 2007

• #7

No dirt just condensation. No sign of any other water just the condensation inside the unit itself.

It's been dried out and although 2 maybe 3 resistors look totally fried the car is now running fine, panic over - FOR NOW!

 

cupra_matt

Audi Technician

Dec 15, 2004

1,362

0

Carlisle

• Mar 27, 2007

• #8

OH NO, i had the exact same problem about 1 week after mapping, my cut out on a steep hill at traffic lights, turned out Jim hadn't resealed ecu properly and it wrecked the inside of the ecu, get him phoned up mate.

 

cuprabaz

Racing 2020VT

Jun 22, 2004

2,357

1

Aberdeenshire

• Mar 27, 2007

• #9

Just been for a good run and it's singing nicely again. ECU is coming back out tomorrow and all the components and boards are getting coated properly conformal coating the way they should be from the factory to prevent this **** happening!! New plastic cover will be fitted also.

Matt it's my brother's silver cupra that had the problem not mine, it has revo stg 2 fitted.

 

Forbez

Huge Member!

Feb 11, 2004

5,878

1

S.Wales

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• Mar 28, 2007

• #10

Could the ECU be put into say, plastic food type bag, and sealed to prevent any water getting at it? Just a thought!

 

gavthelad

Bring on the Boooooost

Nov 19, 2005

1,394

0

Redditch (Midlands)

• Mar 28, 2007

• #11

i like your thinking tom.....lol

wouldnt it sweat though if any heat/humidity came its way?

 

Forbez

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Feb 11, 2004

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• Mar 28, 2007

• #12

Only if any water or summin got in there, could add a silicon bag in there too if needs be.

Just thinking of idea's

 

gavthelad

Bring on the Boooooost

Nov 19, 2005

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Redditch (Midlands)

• Mar 28, 2007

• #13

yeah i know what you mean......i thought i had the dreaded knackered ecu the other week when i had an eeprom error occur. touch wood it hasnt come back and all is well.

it would be good to be able to cover it with something to try and prevent any of this heartache!!!!

 

Martyn

Jun 12, 2001

1,624

0

Poole / Bournemouth

www.seatcupra.net

• Mar 28, 2007

• #14

Dont bag it up, it will sweat!

 

Forbez

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Feb 11, 2004

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• Mar 28, 2007

• #15

Semi permeable bag?



OK i give up, Was an idea though, shot down in flames.

 

basil

Guest

• Mar 28, 2007

• #16

I wouldn't keep it in a bag as thats how I used to keep mine until I had isssues. It would appear that being kept in a bag caused the ECU to sweat leading to spurious fault codes.

Basil

 

cuprabaz

Racing 2020VT

Jun 22, 2004

2,357

1

Aberdeenshire

• Mar 28, 2007

• #17

Going get it resealed later today after the conformal coating has dried then put a couple of silica gel packets in with it. And make the splash gaurd for it. Sorted!!

 

gavthelad

Bring on the Boooooost

Nov 19, 2005

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Redditch (Midlands)

• Mar 28, 2007

• #18

sounds like the better option really....

unlucky tom.......good thinking though bud!

 

Forbez

Huge Member!

Feb 11, 2004

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• Mar 28, 2007

• #19

gavthelad said:

sounds like the better option really....

unlucky tom.......good thinking though bud!

Click to expand...

Smart Arse!!

On a plus side Gav, metal is on its way! For free too!! Keep it schtum though, and we may be in business, gotta sort you out for sorting out the details etc!!

 

gavthelad

Bring on the Boooooost

Nov 19, 2005

1,394

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Redditch (Midlands)

• Mar 29, 2007

• #20

Forbez said:

Smart Arse!!

On a plus side Gav, metal is on its way! For free too!! Keep it schtum though, and we may be in business, gotta sort you out for sorting out the details etc!!

Click to expand...

No worries Tom, my lips are sealed