2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

Signs of water damaged ECU?

Thread Tools
 
Search this Thread
 
Old 07-28-12, 11:23 AM
  #1  
Senior Member
Thread Starter
 
jimmydanny's Avatar
 
Join Date: Feb 2010
Location: Norway
Posts: 504
Likes: 0
Received 0 Likes on 0 Posts
Signs of water damaged ECU?

I had a water damaged ECU due to a leak in my door around Christmas. So I got a new one, and now after some heavy **** rain I got the same symptoms. This time I got the ECU out and dried it since I knew what was causing it, and it worked. Day after, same thing. So, I put it in the shower and blasted it hoping to get rid of the corrosion on some spots, and dried it in the oven on 50 degrees celcius for some hours.

Now, what I got of signs is limp mode, just like the OMP limp, but it is instant, not after a minute or two like the OMP one. Also, there are no error codes, only a constant light.

The duty solenoid is not ticking as far as I can hear, but with ign on, the injectors are spraying like crazy, I hear ticking from them constantly and the gas smell starts to come. I don't know if this happens in normal limp mode as well.

Anyone got input on this? Just got an Rtek 1.5 fitted due to bad OMP and insane OMP prices. Don't want my ECU to be dead already, so if there are any tips to what resistors or whatever that I can swap out, I'd be very happy!
Old 07-28-12, 11:35 AM
  #2  
Rotary $ > AMG $

iTrader: (7)
 
jackhild59's Avatar
 
Join Date: Apr 2005
Location: And the horse he rode in on...
Posts: 3,783
Received 24 Likes on 23 Posts
The Water Treatment

IF you want to get rid of corrosion on a circuit board, do not use tap water. Tap water contains minerals the can cause further corrosion.

Rinse the board with deionized water several times.

Immerse the board in deionized water for a 10 minutes to couple of hours.

Scrub the circuit board very gently with a very soft brush.

Back to a fresh deionized water bath.

Scrub again.

Thoroughly rinse the board with denatured alcohol.

Immerse the board in fresh denatured alcohol for several minutes.

Remove the board from the alcohol bath, blow it dry with air or allow to air dry.

Now you can bake the board at bout 50*C.

This is exactly how you fix a water damaged Iphone. It's called 'The Water Treatment'.
Old 07-28-12, 11:41 AM
  #3  
Rotary $ > AMG $

iTrader: (7)
 
jackhild59's Avatar
 
Join Date: Apr 2005
Location: And the horse he rode in on...
Posts: 3,783
Received 24 Likes on 23 Posts
And fix your water leaks!!!
Old 07-28-12, 11:49 AM
  #4  
Senior Member
Thread Starter
 
jimmydanny's Avatar
 
Join Date: Feb 2010
Location: Norway
Posts: 504
Likes: 0
Received 0 Likes on 0 Posts
Denatured alchohol, got another name, like scientific name, or what store sells it? There are no equivalents to that name in Norwegian, so the name is something else.
Old 07-28-12, 12:03 PM
  #5  
Senior Member
Thread Starter
 
jimmydanny's Avatar
 
Join Date: Feb 2010
Location: Norway
Posts: 504
Likes: 0
Received 0 Likes on 0 Posts
Ah, alcohol that tastes oh so sweet, and makes you puke. And often dyed red. Red spirit we call it.
Old 07-28-12, 08:32 PM
  #6  
Rotary $ > AMG $

iTrader: (7)
 
jackhild59's Avatar
 
Join Date: Apr 2005
Location: And the horse he rode in on...
Posts: 3,783
Received 24 Likes on 23 Posts
You can use Everclear if you want...
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Queppa
New Member RX-7 Technical
8
09-02-18 09:53 AM
Kruel13
1st Generation Specific (1979-1985)
24
09-16-15 09:08 AM
befarrer
Microtech
3
08-22-15 05:52 PM



Quick Reply: Signs of water damaged ECU?



All times are GMT -5. The time now is 08:29 AM.