Questions & Answers for: gmc sierra rough idle

My 94 GMC 1500 5.7 350 is idleing kinda rough. I think I might have en exhaust leak, Would that cause it to idle rough? Also it kinda hesitates to speed up. o2 sensor (oxygen sensor)

...gmc sierra starts but then idles rough then dies. i belive the fuel pump is still working but yet i cant here it. I had to replace the mass air flow sensor. $ 150. the engine would shut off when ...

...gmc sierra 4wd 5.7L running rough mostly during low rpm, hesitates, then smooths out. Problem is becomming more prevalent, wider rmp range. New plugs, wires, cap, rotor, fuel filter. Still happening. ...

...gmc sierra truck started running very rough. It idles rough and losses power under load. I changed spark plugs and wires along with fuel filter. We put it on the code scaner and showes no codes. The ...

...gmc sierra suddenly has a low idle 5.7 liter I am thinking its the tps sensor? The truck has served me well I love it .All plugs are new its not a rough idle just lower than it used to be. If the ...

gmc 2500 6.0 liter truck start running rough. I changed the spark plugs, checked the coil packs and replaced the fuel pumpand fuel filter. Still no change....Any suggestions? ROUGH IDLING CAN BE CAUSE

...GMC Sierra Idles Rough And Cut Off My 2003 GMC Sierra idles rough and cut off sometimes when turning.Replaced fuel filter and changed plugs.engine light stays on.Which 02 sensors do i need to replace ...

gmc sierra rough idle my 1995 GMC idles rough i changed the map sensor throttle sensor heat temp sensor and still no change What are your injectors doing?

...gmc Sierra V8 auto, has a rough idle. Changed both front sensors and all spark plugs and it is still idling rough, in park or in gear, it runs good if your driving. What should I try next? Faulty EGR ...

...GMC Sierra ST with 1992 5.7 t.b.i. Starts and idles rough, then bogs and stalls when foot into it. New TPS, MAP, IAC, fuel pump, EGR valve and solenoid, temperature control sensor. Shows no codes but ...