01 Suburban -- Rough idle, hard starts (1 Viewer)

[meatloaf]

Have an 01 suburban that is idling rough. If you turn on the AC, it almost wants to die or dies on occasion. It is also taking longer to start. It has fresh plugs and wires. Any suggestions? 5.3L engine, 160K+ miles...

Thanks in advance,

Meatloaf

 

[Mace]

you run the codes yet?

 

[meatloaf]

had them plug the code reader at Autozone and it show some 02 sensor codes... Would that make the engine run rough and have problems starting?

 

[Mace]

yes..

 

[meatloaf]

Thanks Mace, I will look into it...Cleaned out the throttle body & replace TPS yesterday and it is idling better but still has occasional starting problems.

 

[WckedMidas]

just went threw same thing on my 99 burban 5.7 vortec it was the fuelinjection spiderweb

 

[fsusteve]

EGR is bad.