2005 Suzuki Swift 1.5GLX (RS415)

[beninnorton]

Hi All,

On idle it wanders 600 - 1500 but doesn't stall. On acceleration it feels lumpy and gutless with an occasional misfire.

I've been getting error codes P0134 (Heated Oxygen Sensor - Bank 1 - No Activity Detected) and P0171 (System to lean bank 1). The oxygen sensor seems to be working properly, on the ODB reader it's giving the range you would expect from the manual.

The throttle body is spotless. the throttle position sensor is giving resistances within tolerance of the manual, and voltages relate to what the manual, however it says 14% pedal up and 80% with the accelerator flat down. I'm wondering if replacing this would help. have tried new spark plugs.

Any suggestions would be appreciated, I'm a bit stuck here, nice little motor with only 80k on it, would like to keep her going.

[ScottieJ]

I would personally change the O2 sensor anyway to see if that helps.