Rough idle - 2001 Altima
 

My Altima is experiencing a rough idle when at stop. The CEL came on about a week ago and the code stated a Cylinder 4 misfire. I've change the spark plugs, fuel filter, and cleaned out the throttle body, combustion chamber and intake manifold.

The car feels like it is going to stall with the RPMs jumping, but at soon as I give it a little gas or turn the AC on high, the RPMs level out.

Any ideas? I would hate to take the car someone and get ripped off if it is something that can be done at home.

Thanks

RE: Rough idle - 2001 Altima
 

My Altima does a similarthing. At a stop, after idling ok for about 30 secondsthe idle turns roughand the rpms drop. The CEl will come on and then go off after a while. Got a code PO300, random multiple misfires and cod PO102, airflow sensor error- low air flow. It's going back to the dealer for repair. When I find out what they fixed I will let you know.

RE: Rough idle - 2001 Altima
 

Umpire727 ... I would guess Throttle Position Sensor.......pdbrains... I would say Mass Air Flow Sensor.

RE: Rough idle - 2001 Altima
 

Sounds good! I'm going to see what codes pop up for mine today.

Thanks.

RE: Rough idle - 2001 Altima
 

Burnnout - Is this an easily fixable problem?

RE: Rough idle - 2001 Altima
 

Burnnout - Is this an easily fixable problem?

RE: Rough idle - 2001 Altima
 

i had the same problem and i just replace the distributor and the wires and the car appreciated it ;).

RE: Rough idle - 2001 Altima
 

Honestly... I would take the car to the dealer and have them diag. it..... could save you money in the long run.

RE: Rough idle - 2001 Altima
 

it could possibly be the intake manifold gasket, check the intake near #4 cylinder see if you hear a vacuum leak in that area or you could possibly see part of the gasket blown out

RE: Rough idle - 2001 Altima
 

i brought my car to the dealer he did like i said on my previous message.