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main relay buzzing with s300
Posted: Tue Jul 28, 2009 2:07 pm
by holset b18c1
not sure whats the problem but my main relay started buzzing the same day after i tryed 2 get the car tuned?? i checked for loose gound wire found none!! thromostat valve cover tranny grounds all good!! looked in the car for loose grounds none!! tryed cranking the motor will not start any more is my s300 fired??also only with the s300 the relay buzz not with the stock ecu!! car 99 civic si with gsr turbo set up!!
Posted: Tue Jul 28, 2009 2:42 pm
by Spunkster
Try the ECU in a known good OBD1 car. It may be your adapter harness.
Posted: Tue Jul 28, 2009 2:52 pm
by holset b18c1
ok i guess i will have 2 do that but i got a next relay, just in case!! also thanks for the info
Posted: Tue Aug 04, 2009 7:05 am
by kinetics
I had this issue when I had a bad ground.
need help
Posted: Tue Aug 04, 2009 9:21 am
by holset b18c1
Where was your bad ground wire?
Got a new jumper harness and main relay ! Still buzzing
Posted: Tue Aug 04, 2009 10:18 am
by Spunkster
What is the battery voltage when cranking?
Posted: Tue Aug 04, 2009 10:57 am
by kinetics
My bad ground was actually on the neg battery cable, between the fender wall, and the block.
So, basically, it was missing the block ground. It started 1 time, and then started doing the buzzing from then out, and wouldn't start.