Anyone have 2 cents to pitch??

 

Did you thoroughly clean the throttle body while you had it off? It would not cause your hesitation at medium to heavy throttle, but it would cause the idle quality problem.

Concerning the fuel supply, your confirmation is a fuel pressure test away. You will need to get an adapter to connect a gauge to the back of the throttle body. You need 8-10psi all of the time for the engine to function properly.

 

34sac:

Replace your fuel pump and replace your O2 sensor too ($29 sensor at Kragen) if you have a catalytic converter in your truck. Good Luck and happy driving.

K5Lover.

 

please help?. my 87 is tbi i have rnr 02 sensor, injectors, presher reg, fuel pump, knock sensor, temp sensor, tps, ecs,plugs,wires,and not long ago cap rotor,have super chip, duel exaust, mod intake sight not major, but 3.5t o 4 grand it leans out and runs like a ... and 2 grand pulses like the higher rpm jump. i up graded the engine to 350 last year.do i need a ecm?

 

Well sac? What was the problem? I have an87 350 tbi doing the same thing!!!!

 

chevy 350 low comp.#4cylinder . next day the harmonic ballencer was hitting the timming pointer on the timming chain cover broken crank took forever to get a warrety engine had to be shiped to texas for failer inspection.

 

i replaced evry thing befor i checked the engine. because it wasjust over a year old. it was the strangest thing i herd a miss climbing a big mountain cayon freeway towing the boat. it just went down hill from there.

 

Dang. I driver mine daily. Im thinking my prob is a sensor or vaccum leak

 

well myn had a dead cylinder at idel but at eceleration that cylinder would get comp. then it would literly just take off like 3.5 grand till the trans shift and it would start all over.