Questions & Answers for: Chevrolet Blazer envoy rough idle

rough idle My 1998 Chevy blazer has a rough idle. I listened to it with the hood up and I heard a loud hissing sound which I traced back to underneath the air filter hose. What hose run under there???

...it hi, i have a gmc envoy 2007 when i start it up it shakes like if it was running on 5 cylinders thats what i call rough idling. now! check your idling switch control valve.service it by cleaning

...rough but runs smooth once you get going CHECK FOR A LEAKING INTAKE MANIFOLD GASKET, USE A CAN OF CARB SPRAY AND SPRAY AROUND THE TOP OF THE ENGINE, IF U HIT ON A LEAK U WILL HEAR THE ENG CHANGE TONE ...

rough idle on 1999 chevy blazer 4.3 liter changed plugs cap rotot wires fuel filter still rough check engine code miss fire cylnder 2 cleared code no engine light but still runs rough at idle Barring ...

...idle rough. I thought it needed a tune up, so i replaced the spark plugs, air filter etc. Still idled rough. Could it have been the fan blade was loose? when driving the vibration went away. thanks ...

Rough idle. Has new plugswires and cap and rotor. Is smoother at highway speeds but is still rough Sounds like an IAC motor( Idle Air Control) easy proof test is to bring it to Auto Zone or Advanced ...

...rough idle , could this be a timing chain issue. i replaced spark plugs, distributer, wires, thottle pos. sensor, map,and idle air sensor. Thanks james no more like a low duel pressure or dirty ...

...rough but fine in a higher rpm. you might have a vacuum leak. to find a vacuum leak i use propane to pinpoint the orign of the leak. when the leak sucks in the propane the engle idle increases. thus ...

...a couple days then started doing it again.Already changed the fuel filter and pcv valve. whats the problem? have you tried changing the oxygen sensor (o2 sensor), i had a rough idle and that solved ...

...rough idle and back fires 95 Chevy blazer s10 will not accelerate, it also has a rough idle and it putters and back fires when was the last tune up done on it? have you checked the spark plugs and ...