i got a random misfire all the po 300 and so on comes up. i adjusted valves, checked for intake leaks, and cleaned out the egr valve and it still giving me misfires i dont know what else to check for has anyone had this problem before

 

automatic or six speed manual?

 

six speed trans

 

I would trouble shoot the spark plugs and coilpacks first. if those come back clear, I then would get a compression test and leak down test to confirm if lost compression due to the money shift.

or could be a catalytic converter problem
who knows!?

you'll need to trouble shoot for these things

 

the spark plugs and coils i changed to new but i havent checked for compression on them

 

the two primary cats could be bad.
then check for compression and do a leak down test.


six speeds can mechanically over-rev and fuck the heads. (piston to valve contact)

 

then the check engine light came out for the front cat but i was thinking that the random misfires made the cat light come on idk man its giving me a hassle this car

 

it's a 9 year old car. things go bad. so, if it is the cat. change out the cat

a cat going bad indicates other problems...mainly fuel....
what kind of fuel are you using?
and it's possible the previous owner used the wrong grade of gas or performed the money shift.

it's a 9 year old car.

 

yea im gonna do a compression test on the car first then change the cat hopefully it will work

 

where could i get a catalytic converter for this tl?

 

from the dealer

 

kool thanks

 

i was using 93 then i went to regular gas and yes performed the money shift over rev