My wife started the car and it idled rough and sounded like it was missing out.
-check engine light on
-engine electronic message
-runs rough until you get up to speed.

Guessing catalytic converter and/or O2 sensor? If not any ideas?

How hard is it to change 02 sensor and if I take it in to dealer about how much is it to change out catalytic converter out here in sunny Las Vegas, NV if that is problem?

Thanks,

Dean

First step is to get the code read using a OBDII scanner and post that data.

Autozone supposedly will do it N/C.

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Terry Allison
N. Calif. & Boca Chica, Panama

09' E320 Bluetec 77k (USA)
09' Hyundai Santa Fe Diesel 48k (S.A.)

There are a number of things that it can be. Another possibility is an extreme lean running condition due to a faulty air mass meter or a large air leak downstream of the air mass meter. You will have a much better picture of what it is after the codes are pulled.

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Ali Al-Chalabi

2001 CLK55
1999 Dodge Ram 2500 Cummins Diesel
2002 Harley-Davidson Fatboy
Merlin Extralight w/ Campy Record

When was your last tuneup? Might just need wires and plugs. Get the codes read - maybe it is a simple P0300 type misfire code...

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08 W251 R350
97 W210 E320
91 W124 300E
86 W126 560SEL
85 W126 380SE Silver
85 W126 380SE Cranberry
79 W123 250
78 W123 280E
75 W114 280

Thanks, will do the code thing and posts results.

Dean