the car run fine untill i drive it constanty for an hour then when you are driving slow and rpms around 1500 and then it starts to choke and hesitate then i give it more gas and it comes out of it then while its doing this the fuel lines and fuel rail and injectors are pulseing and vibrating loud

i just put a new fuel pump 1 month ago, fuel fiter about 5 months ago and this was a problem before i even put the new pump people tell me its the fuel pressure regulator or o2 sensor can any 1 help me on this ?

85 z28
k&n
tb bypass

 

ANY 1 CAN HELP WITH THIS POST

 

it may sound odd but it could be a failing ignition module.. ive heard of them causing things like this before

 

What's that supposed to mean ?

 

ITS hard to explain but they are vibrating the fule lines and injectors dont know wtf it is but its getting on my nerves

 

I don't know about the vibrating lines and injectors,but my 87 Iroc w/ 350 TPI does the same "hesitation" after I get stuck in a traffic jam,or have to drive slow for extended periods of time.We've narrowed it down to a "vapor lock" of sorts,as the underhood heat boils the fuel in the rails.....I've had it stall out before if I didn't feather the gas just right.Once I start driving again(normally),it goes away.This only happens to me after the car is at normal operating temps.,and then I get stuck in extended periods of slow driving or sitting at an idle for a period of time(like traffic jams and such) it pisses me off ,especially if it does die and I have to get it restarted and get it to drive.I've been thru three ignition modules,and tried a couple different coils,so it isn't my ignition...it's definately a heat build up problem in traffic.I live in Tampa,Florida....so driving in inferno weather in the summer doesn't help .........my engine temp itself stays very cool,it's just in the fuel "boiling".