Ok So Recently I Replaced My Crank Pulley Because It Fell Of On The Freeway But I Fixed That Now. But For A Week My Car Would Run Fine When Cold But Then As It Warmed Up It Would Sputter And Lag. It Would Rev Fine In Neutral But Would Sputter While Moving Now It Does It Even When Cold I Need Help Any Ideas Where To Start???

 

Yep. Apparently I need to make a sticky because I say this probably once a week:

Check all sensors and connections.
Check spark plugs (read the tips!).
Check spark plug wires.
Check timing.
Check for vacuum leaks.
Check your crank pulley.

 

Ive Cleaned All Connections A While Back And Even Replaced Some.
I Bought New Spark Plugs And Gaped To Spec(old Plugs Had Signs Of Running Rich But That Was Due To A Bad FPR But I Replaced)
New Cables
New Crank Pulley New Washer,Key And Bolt
All Vacuum lines New No Leaks
I Will Check Timing Today

 

start with testing. Get a fsm.

 

Ok I Fixed My Problem You Guys Wont Believe What It Was, So I Pulled My Fuel Lines Just To See If The gas Was Dirty Even Tho I Put A New Filter When Pumped The Gas Out I Saw That The Gas Looked Like Yellow Kool Aid So I Just Drained My Tank All The Way And Filled my Tank Car Runs Like A Champ..Thanks For The Help You Guys

 

I wanted to say an old gas or a rusty gas tank!!