My 98 civic DX keeps blowing the alternator fuse. Its causing my CEL to come on. Its throwing both o2 codes and the ELD. i replaced the primary O2 because it needed it.

last week this happened changed the fuse and i was fine. yesterday the light come on and i replaced the fuse. it blew 5 minutes later and light came on. i replaced the fuse agaon reset ECU and right away the fuse blew..

Is this a sign of a bad alternator?

 

You could have a wire that is fried. That what was happening on my 98 civic dx. Not your same problem but a different problem with blowing fuses

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redturbocivic &raquo;</TD></TR><TR><TD CLASS="quote">You could have a wire that is fried. That what was happening on my 98 civic dx. </TD></TR></TABLE>

In the Alternator?


My speedo is all figity, and then sometimes it works fine. i could be at a light and it will be jumping around all crazy

 

Anyone ???

 

the primary o2 sensor wire has probally gotten into the condenser fan shroud. has it been wrecked? if so check the wires on the o2 sensor&gt;

 

what rating fuse are you putting in ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ZUL8R &raquo;</TD></TR><TR><TD CLASS="quote">. i replaced the primary O2 because it needed it. </TD></TR></TABLE>


there was a 7.5 in there . ive tried multiple 7.5's and a few 10 amps.. , im thinking theres a bad wire in the alternator

 

i kept blowing fuses also. my problem was that the sec. o2 sensor wires shorted to the chassis of the car.
problems that it caused:
speedo went dead
speed sensor fuse blew
vtec didn't work

i replaced the fuse several times with the 7.5 fuse, but it kept blowing. i then put in a 15 amp fuse and drove it like this for a while, although the speed speedo never worked. i searched for a schematic of the vss and it seems like that thing is tied into several things. for ex, cruise control, alternator, vss, o2 etc. i troubleshot all those things but then i found that my sec. o2 sensor wires under my car near the shifter was grounding out to the car.

 

I guess it doesnt help that i have a simulator running to the secondary O2

 

i replaced the fuse again today at lunch. drove a few miles on my break. so far no light, but we will see. It just happens to be raining, so when it stops i will get it on stands and relook everything again..

Damn! I hate not having a garage anymore