Random missfires P0300, P0141 code.

[dsmith500]

I have a 2001 Lasaber that has started to randomly misfire. It sometimes is at start up and sometimes driving, I have found driving 55-70 is where it really starts. It might flash the SEL but not all the time. Not sure what the problem could be. I feel like its something electrical or maybe to catalytic convertor.

 

[02LTD2.0]

How long have you owned it? Has any work been done on this car since you've had it?

 

[dsmith500]

How long have you owned it? Has any work been done on this car since you've had it?

I have done the upper and lower intake gaskets but has been 8 months. New plugs, wires, and coils 6 months ago. New PCV and bracket, new plugs, coils, and wires. Besides that just normally maintained. I have a new fuel filter coming this week but ordered that before the problem started.

 

[dsmith500]

How long have you owned it? Has any work been done on this car since you've had it?

Owned it for three years. 210K miles.

 

[02LTD2.0]

Random misfire could be your ICM starting to flake out. P0141 is a problem with the Oxygen sensor that's after the catalytic converter.