Rough Idling and Oxygen Sesor problems

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Rough Idling and Oxygen Sesor problems

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Chevrolet Forum >> Chevy Cars >> Impala >> Rough Idling and Oxygen Sesor problems

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Rough Idling and Oxygen Sesor problems - 7/13/2007 5:44:10 PM

wheels

Posts: 1
Joined: 7/13/2007
Status: offline

I own a 2000 Impala with a little over 160,000 miles on it. It has been a great car. Recently it began to shake while in idle and the engine light went on. I took it to advanced auto parts and got the free test. They said it was my oxygen sensor. My car has two sensors but I only bought one to save money. I put in the new Oxygen sensor and then I also replaced the spark plugs. The light went off but the car still idles rough. I put in some fuel injector cleaner today but i was just wondering if anyone has any other ideas for me to research besides buying the other oxygen sensor.

Post #: 1

RE: Rough Idling and Oxygen Sesor problems - 7/23/2007 5:40:35 AM

V1 Dave

Posts: 7
Joined: 7/23/2007
Status: offline

Try pulling the vacuum line off of your EGR valve and test drive it.
If that did it then it is probably your EGR control valve which takes commands from your computer.

(in reply to wheels)

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RE: Rough Idling and Oxygen Sesor problems - 7/24/2007 3:44:18 AM

Robertwav1

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Joined: 11/12/2006
Status: offline

quote:

ORIGINAL: wheels

I own a 2000 Impala with a little over 160,000 miles on it. It has been a great car. Recently it began to shake while in idle and the engine light went on. I took it to advanced auto parts and got the free test. They said it was my oxygen sensor. My car has two sensors but I only bought one to save money. I put in the new Oxygen sensor and then I also replaced the spark plugs. The light went off but the car still idles rough. I put in some fuel injector cleaner today but i was just wondering if anyone has any other ideas for me to research besides buying the other oxygen sensor.

I would get the codes pulled again. Just because it says O2 sensor doesn't mean that's what it is. If the O2 sensor or sensors are out of range it could be mean something else is causing it. By all means with 160K on the clock, I would replace the O2's, both of them. Pull codes and see where your at. Go from there. Plugs, wires and whatever tune up parts are needed I would do ... get it out of the mix if you haven't already done so, and then ... codes again ... this is the only way to track it down.

(in reply to wheels)

Post #: 3

RE: Rough Idling and Oxygen Sesor problems - 8/1/2007 11:05:54 AM

MalibuMaxxSS

Posts: 598
Joined: 11/18/2006
Status: online

throttle position sensor.......mass air sensor.....

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2006 Malibu Maxx SS, computer Flashed, undercar LED, Cold air intake, 18' Potenzas, Limo tint front to back

1990 YJ Lifted Locked and always muddy, posi loc, 33s TSLs, weber carb. drop tailgate...

(in reply to Robertwav1)

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RE: Rough Idling and Oxygen Sesor problems - 8/6/2007 10:06:01 AM

GUSTANS

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Joined: 8/6/2007
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I own a 2000 with the 3.8l and around 100k, the engine light came on and I also had the rough idles and it would sputter while driving. I had the code pulled and it was the Mass Air Flow sensor. I replaced the sensor and had the computer reset, but the light is still on, but the problems went away. I am not getting the best fuel milage, but it drives smooth. The error code is still saying that the Mass Air Flow sensor has "Low Input Voltage". Would another senor upstream or downstream of this sensor cause this same error message?

(in reply to MalibuMaxxSS)

Post #: 5

RE: Rough Idling and Oxygen Sesor problems - 10/28/2007 5:35:30 PM

2002impalaLS

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Joined: 10/28/2007
Status: offline

i have an 02 LS. when my O2 sensor went, the engine just died when driving. no sputtering, nothing. i used an ODB2 scanner and it said it was the O2 sensor. I was thinking it was the battery since it was about 5 y/o and it was only a 5 year battery.

I replaced the O2 sensor and it fixed it. BTW, the sensor was about 140.00 w/core charge. with the core charge, i guess they go bad. the O2 sensor i replaced was on the intake, not the MAS on the hose. the sensors about the size of a pack of cigaretts. ALso, you will need some Torx drivers to remove the sensor.

(in reply to wheels)

Post #: 6