Hi, well im new to this but i just wanted some help on my 2000 honda civic Ex. it all started when i tried to change my throttlebody, i started the car and my check engine light came on and was running rich, so i changed my MAP sensor and the light went away but it still remained running rich.. and the car wouldnt start unless i jumped it so i figured it was the alternator so i changed that and same problem still exists..(running rich and not starting unless i got a jump) can i please get some help... Thanks

 

check battery terminal conenctions for a tight/clean connection?

 

i checked those, sanded everything, checked all grounded wires and everything seem to be ok..

 

is the battery good???

 

starter?

 

now if the alternator is good/replaced have you checked the battery voltage once car is running (you got a jump and its running)?

The wire that the alternators charge is comming from, has that been tested that the wire has not been damaged in any way? The charge from the alternator may not be getting back to the battery.

Also bad battery like stated above may be a possibility.