car wont idle

blk91sc

Registered User
i have a 1991 sc and i just had my head gaskets done but problem was happening before they blew, when i start the car, the car wont stay at a steady idle it jumps between 250-800 and sometimes dies, i read a thread about this before and cant seem to find it again, i replaced the idle air control valve and that did nothing i was wondering if the fuel pump could be the problem PLEASE HELP ME!!
THANK YOU VERY MUCH Tyler
 
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