Someone want to tell me why one day my fuel pressure dropped to zero tryin to start my car. Went out and got another Relay from the junkyard and put it in. Few days later same problem.. so i swapped it back and it was fine.. and like ever few days it drops to zero and i switch it back and sometimes that doesnt help and i have to let it sit a few hours before i get pressure again. And why whenever i get about half tank i start to bog out like im out of gas, if i get to 1/2 tank my car has shut off before.... been this way for months, i just avoid it by filling up every half tank. Aftermarket pump, new filter, level in tank, fuel level bobber isnt cracked or broken or readin wrong.. i dont think.. Whats the deal?