98 2-door skipping and blowing smoke!

[JacobGreen]

got a 98 tahoe and i've replaced plugs, wires, distributor cap and rotor, spider injectors, and O2 sensor and its still runs rough after it warms up. when i get down on the gas it will start blowing black smoke also.....any help would be greatly appreciated

 

[SunlitComet]

would look into testing your engine temperature sensor used by the computer. which O2 sensor did you replace? any strong smell of fuel from the throttle body?

 

[JacobGreen]

i changed both but i hoping to get around to putting a mass air flow sensor in...i'll report back when i get under the hood

 

[SunlitComet]

both sides or fronts or backs? you have four of them. try cleanng the maf first. dont waste money throwing parts you dont need at it. but if you must all electronic parts must be delphi or delco units.

 

[JacobGreen]

sorry for taking so long to get back but i have changed all 4 and the throttle body didnt smell strong

 

[SunlitComet]

did you test your pcm coolant temp sensor and clean your maf?

 

[JacobGreen]

cleaned the maf but havent tested the other, gonna check that out this evening or tomorrow