How do you diagnose voltage spike?

General discussion forum about the 240sx, and a great place to introduce yourself to the board!
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rps13saipan
Posts: 13
Joined: Fri Jun 19, 2009 10:15 pm
Car: 1991 NISSAN 240SX

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i messed up my ecu. i was told that it was caused by a voltage spike. HOW DO I DIAGNOSE AND FIX A VOLTAGE SPIKE?

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alms24sebring
Posts: 7332
Joined: Wed Nov 15, 2006 12:18 am
Car: '97 Nissan 240sx. First Nissan. First love. Sold.
'04 Nissan Sentra SER SpecV
Location: Alexandria VA

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well how/what happened first?
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zerepdivad
Posts: 2010
Joined: Thu Nov 24, 2005 5:39 pm
Car: '90 240sx . '02 Lexus IS300
Location: WI

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Digital multimeter or a voltage gauge and your eyes......
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