car dies,check engine light on,,,hard acceleration

[TURBOTERRORV6]

car dies after hard acceleration,drives kind of fat,,did improve a little by changing to a new maf sensor,but it still drives kind of rough(fat),and the check engine light flickers now and then. could it be the tps sensor?? while scanning for codes,i did get 5 codes,2 for the maf sensor(replace that) 2 codes for the oxygen sensor(lean) figure it was because of the bad maf sensor,and another code being the ("TPS open?)....need input my fellow buickbrothers,thanks

 

[DMan]

Offhand, TPS open suggests the TPS sensor is failing.

What are the exact trouble codes you are getting?

 

[Mike Licht]

sounds like the positive battery cable to me
Mike

 

[TURBOTERRORV6]

sounds like the positive battery cable to me
Mike

well it when i hook it up to the snap on diagnostic,it read "tps open range" i will hook the diagnostic back again,and get the exact read.Also while im going @ 50mph,stomp the gas pedal,and pick boost up to 10lb,the volt dummy light flickers now and then???i have replace the following>>.220 amp. alternator,optima battery,maf sensor,,air/idle sensor....i have not change the o2 sensors,knock sensor,MAP sensor,or tps sensor............thanks again for the quick input,,,,