Jump start-OK,self start NO

[Myke456@aol.com]

Had to jump start my car (87-5k cstq) last night (clic/clic, not turning
over). Started right up with the jump. Assumed it was the 4 yr old batt., so I
replaced it today.
The clic/no turn over continues (yes, batt. fully charged). Yet starts right
up when I use an external batt. connected to the jumper post, ground to the
engine. Connections at batt. and starter are tight.

Can anyone steer me to the possible cause?

  ([____]=====OOOO=====[____])   87 5kcsTQ, 227k miles
 []]]]]]]][Mike Aiello][[[[[[[]     original owner
___\}}}/________________\}}}/_______myke456@aol.com
       Dutchess County, NY