I have a 1999 Civic si. My alternator went out, so I replaced the alternator. After replacing the alternator, I replaced the battery also. Then I started my car. I drove it down the street, then my speedometer starts tweeking out and from my ecu, it starts clicking. So I checked the alternator fuse under the dash to see if it was blown. It wasn't blown, so then I checked if my ecu was fried, so I jump my car to a obd1 p72, car turns on with a check engine light and turns off. Then i use a p28, and the same thing happens. I really don't know what it can be now. I also checked if everything was grounded and every is grounded. Does anyone know what might be the problem? thanks

 

Recheck your grounds, make sure the alt. plugs are all the way in.

 

sometimes when you put in a new alternator the starter tends to go out

 

could be an eld.

check your fuses, and get ready to bust out the multimeter...

 

its the thermostat ground

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ev13lf &raquo;</TD></TR><TR><TD CLASS="quote">could be an eld.

check your fuses, and get ready to bust out the multimeter...</TD></TR></TABLE>+1

 

thanks for the advice everyone!