Will not restart after the engine is hot. on 1993 Buick Riviera

Replaced starter less than 20,000 miles ago...Also when warming very rough. Had this problem before went away after replaced starter now is back

Asked by for the 1993 Buick Riviera
2 answers 2 comments
DOES THE ENGING NOT TURN OVER WHEN HOT? AND WHERE DID YOU BUY THE REPLACMENT STARTER?
AS FAR AS ROUGH RUN COLD,C.E.L. ON? ( 3.8L.V6 EFI.) I THINK.
it does nothing if hot...just console lights will turn on...Mechanic had to order replacement dont know where from...no c.e.l is not on...have noticed the security light is on when this problem occurs
suspect starter if it was a cheaper starter. as far as rough running is ck eng light on?
no its not ...security light comes on when this happens... as for the starter im not if its a cheaper one ...mechanic ordered and can not get to the starter myself to test or check out..