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Discussion Starter · #1 ·
how can i tell if my lift pump is going out.. not the cp3... i have noticed my fuel milage has dropped about 2-3... but what are the tell tell signs... i want to know b4 my cp3 has any damage
 

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i dont know but when mine went out the truck just shut off. i put the smarty on it and it gave to me two codes and then i just kept tryin to start it and then it would run for a while and shut off! but i dont know if there is any signs of it!
 
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