My girlfriends peon is missing out something terrible.. It's the basic 2.0 .. I've changed the downstream o2 sensor thinking it was that... It didn't help ... Should I change the upstream to?? Could it be a coil pack??

 

Any advice would help

 

Have you checked the basics?

Clean plugs, correctly gaped
Plug wires with no breaks or loose connections

Run some seafoam through the gas tank and vacuum line

You can ground the plugs out on a surface one by one and see if a cylinder is showing a weak spark to see if the coil or the wire for that cylinder is bad.

Is the car throwing any OBDII codes?

Start with cheap solutions then work to more expensive ones

 

It was throwing a code that said bad o2 sensor that it was running to rich or lean I think the code was p2096. Not 100% sure

 

If it threw a code saying the engine was running too rich or lean then you definitely need to look into changing the upstream O2 sensor.

 

shortage of fuel will also cause a lean condition. fuel filter ect.

 

also its a neon just scrap it and buy another xj smarter investment anyway, with crap weather coming next few months 4x4 much safer.consider this neon that always needs fixed and when timing belt goes take head with it vs xj needs minor this or that runs for 200k miles . i vote xj all day

 

I'll agree it's a pos .. Would rather get her a xj.. Funds are just limited...I feel stupid I never looked at the plugs they were pretty shot... Bought new ones and it took care of the missing out so far