Hey guys, i have a 03 OZ with 117000 miles and a rough idle and ive tried SO much to fix it and i cant figure it out,
i have:
bought a new catalytic converter, [the second one]
new 02 sensor
checked all my intake!
and i have NO check engine light, i just put in the o2 sensor and the engine light went off, any ideas?

 

how do the plugs look?

 

there brand new! i bought them recently.

 

was it doing this before you replaced the plugs? what did you get for plugs?

have you checked all your vacuum lines? what do you mean by running rough? what is it doing exactly? is it just at idle does it get better or worse at different rpms?

 

ive checked them, it idles slightly rough at 700, then from 800-1100 it REALLY rough and loud, then runs out smooth,

 

it did it when i bought the car, and i went with basic plugs, single prong copper plugs

 

did you check to make sure the plugs were properly gaped?

 

i did gap them correctly but it wouldnt hurt to check, any other ideas? ive gone through so many typical fixes

 

did u try resetting the ECU yet? its a long shot but easy enough to try..... maybe injectors could be a bit gummed up. there are lots of reasons you could be having this problem its hard to say without being able to see/hear the issue (at least for me)

 

yeah well ive heard of cleaning injectors and stuff but i dont know how to do that kind of stuff. but i havent reset the ECU

 

to reset your ecu disconnect your battery for a few mins reconnect and you should have reset.

I would toss can of seafoam in your gas tank next time you fill up to help clean everything out.

could be bad ignition coils? dunno just throwing ideas out there

 

i appreciate it! ill post on the results

 

Timing belt?

 

you think his timing could be off? or that his belt could have skipped a tooth? I would think that would cause a lot more problems than what he is experiencing but then again I could very well be wrong.



any updates with your issue?

 

well now im having a slight bit of trouble getting it started. narrow it down?