Quote:
Originally Posted by ischmitz
Maybe something as simple as another component that overloaded the first DME relay (killing it in the process) and is still faulty. The fuel pump drawing too much current comes to mind:
FYI, a burned trace is not a normal failure mode for these DME relays. They have gotten a bad reputation due to cold solder joints. In your case the burned trace is more indicative of excessive current draw that heated up the trace and eventually causes it to fail as can be seen in your image.
If the fuel pump is marginal because one of its bearing is on its way out maybe it draws excessive amounts of current that are still under the rating of the fuel pump fuse but enough to cause this type of damage. The next actions:
- test fuel pump current draw
- check static fuel pressure and fuel delivery rate (if that is off it explains your poor running)
Good luck,
Ingo
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Would the (cracked) solder joint moving side to side be able to cause that kind of heat?