1989 chevy k-5 5.7 TBI on 1999 Chevrolet Silverado 1500

PLEASE HELP , 89 CHEVY K-1500 5.7 TBI RUNS ROUGH AT COLD START AFTER WARMS UP RUNS LIKE NEW DRIVE AROUND ABOUT 30 MINUTES GET HOT THEN SHUT OFF FOR ABOUT 30 MINUTES COME BACK AND TRY TO START SOUNDS FLOODED AND WONT START IF YOU GET IT STARTED RUNS EXTREMLY ROUGH AND YOU HAVE TO PLAY WITH GAS PETAL TO KEEP IT GOING FOR ABOUT 5 MIN. THEN STARTS TO SMOOTH OUT, I REPACED PLUGS ,WIRES,GAS FILTER,EGR, EGR SOLENOID,KNOCK SENSOR,FUEL PRESSURE REGULATOR CAN ANYONE HELP I HAVE TAKEN IT TO TWO SHOPS BUT THEY ARE OF NO HELP, ONCE AGAIN 1989 CHEVY K-1500 5.7 TBI

by in Fishers, IN on May 06, 2010
3 answers 1 comment
ANSWER by on May 25, 2010
temp sensor
2 people like thisFlag inappropiate
COMMENT by on May 28, 2010
thank you tried that still the same,tried also air intake sensor and electronic spark control just installed new tank and fuel pump i am waiting to get it back to see if that is it
ANSWER by on October 30, 2010
the temperature sensor could be bad and telling it that it is always cold and causing it to run ruff
ANSWER by on February 13, 2011
i had a problem like this one when it was hot was shoting off took a will to find the problem ends up it was they manifold was to old so got thiner n was over eating starter soleniod hope it help