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ECU and corrosion

Discussion in 'Automotive Electronics' started by deSoto, Oct 27, 2017.

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If you have ECU repair experience is corrosion a common problem?

  1. yes; regular problem

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  2. yes; but occasional problem

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  3. yes; but rare

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  4. no; never a concern

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  1. deSoto

    deSoto New Member

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    Can anyone with ECU repair experience comment on whether or not corrosion is a common cause of ECU problems or failure?
     
  2. shortbus=

    shortbus= Well-Known Member

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    Would you expand on your question? Having worked for Delphi/Packard Electric, they have a pretty good success with sealing both connectors and the wires used in automotive electronics.
     
  3. deSoto

    deSoto New Member

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    Thank you for your reply. My concern relates to moisture, water, or other automotive fluids getting inside the ECU enclosure resulting in corrosion. Is this a common cause of ECU problems/failures when they occur?
     
  4. dave

    Dave New Member

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  5. shortbus=

    shortbus= Well-Known Member

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    I think your worrying about something that dosen't happen. At least with General motors cars. What make of car have you seen this in? The ECU should be both sealed and internally potted in all that I've seen. The ECU may get corrosion on the outer housing, but there should be no chance of it getting inside. At least none of the cars I've ever worked on have had this problem, and my area uses a lot of salt on the roads to control ice.
     
  6. jamie_s

    jamie_s New Member

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    its quite common for capacitors to let go in some older ecu's damaging the copper tracks in the vicinity
     
  7. shortbus=

    shortbus= Well-Known Member

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    But that is due to the caps themselves. Not corrosion. Even under hood ECU's will get corrosion sometimes of the housing, but that is just the housing, and isn't internal.
     

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