Car still has electrical problems and high voltage after replacing parts
Persistent vehicle electrical faults like high voltage spikes and limp mode often continue even after replacing major components like the alternator, battery, and ELD. This leaves drivers completely stuck after trying everything, unable to reliably diagnose the root cause of the ongoing system failure.
What people tried
Every workaround mentioned in the threads below. We haven’t tested any of them — and nobody here is claiming they worked.
- 1replacing parts such as the alternator, battery, and ELD
- 2clearing diagnostic trouble codes
- 3cleaning contacting surfaces with sandpaper down to bright metal
- 4applying a protectant like anti-seize, cold galv, or soft seal
- 5connecting a new ground wire for testing
- 6checking and cleaning all grounds across the vehicle
In their words
Unedited, grouped by where they were said, most upvoted first within each place, each linked to the thread it came from.
“Honda accord is going through some electrical issues. It first started with losing power to pedal . While driving Aka limp mode alternator and battery were replaced within the year . So I replaced the Eld (charged the battery before eld replacement ) but I’m still having issues with high voltage.”source ↗
Where this came up
People with this problem also raised
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- 2Car won't charge despite new battery and alternator