1998 Subaru Outback check engine light

[quote]p0301 p0302 i know what the codes are misfire 1& 3. P0302 is for cylinder #2, so are you misfiring at cylinder 3 or cylinder 2?

i checked exhaust no leaks i checked for intake leaks didnt find any the engine misfire on 1& 3 clys i erased the codes and it didnt come back over 600 miles but no 1 misfired after engine ran rough with no power and than the car wouldnt go so i checked the fuel pressure it readed 24 lbs with hose connected and 24 lbs with disconnected no change i think the misfiring might be caused by the engine hesitating and loss of power when you step on the gas and it would go what do you think thanks

If you look at step 5 for code P0170, if the fuel pressure is too low (disconnected), problem is within improper fuel pump discharge or clogged fuel supply line. So, before you spend money replacing the fuel pump, I would make sure that the line from the fuel pump to fuel filter is not clogged.

hi zackman

I finally fix the problem i replaced the fuel pump and the car has been running good for 400 miles no hesitating or loss of power no more codes or check engine light thanks for the help in finding the problem but now the catalyst monitor is not ready all the other one are can you tell me how to get it to be ready i have driven on the highway 150 miles slow roads medium speeds short drives
any ideas on how to get it ready only days left for reinspection

thank again john

Subaru does not provide any info for catalyst readiness. I have no way to tell you how long it will take. You may need to go to your state's DMV, and request for extension. I know CA and UT will give you extension (2 weeks) providing that you pay for the tag plus $10, I would imagine that other states will have similar program.

well i cant believe it i just cant believe it the catalyst monitor went to ready but quess what the check engine light came back on--- for code p0420 catalyst efficiency below threshold bank 1 (what)
this is the first time for this code i check the exhaust
for leaks no leaks up front-- but have one after catalyst convertor at the flange on the pipe side down stream--- could this have set off this code--- the car was running fine for 2 weeks ?..i. am going to change the pipe today

That exhaust leak may have caused the code to come on.

Hi zackman

I replaced the exhaust pipe behind the rear converter it was broken on the pipe side at the flange.. converter side was ok .. (new gasket ..new pipe all tight) ... i cleared the code and i will drive it around... hope that was it
ill let you know what happen .. thanks again

Not a problem. Glad to help.

the light came on again code p0420 no other codes---no exhaust leaks ---car runs fine---- what should i do next -- there are two converter on this car -- if the catsalytic is bad do i have to replace both -- if so do you know why

thanks john

I am now leaning towards possible bad converters. Especially after the exhaust pipe replacement, you may have to go to a exhaust/muffler specialist (such as Midas) and have them diagnose the code, prior to replacing the cat converters. As the damage was after the rear cat, Subaru recommends replacing both converters. I do not have any explanation for that.