SoCal General Chat

[mcr_driver]

sorry to hear :( what were the readings? what hasn't been replaced recently? spark plugs? 02? CAT? exhaust leaks? dead hooker in the trunk?

[dvck]

you mean you have to maintain the engine for it to combust properly?

[bmw325csi]

you mean you have to maintain the engine for it to combust properly?

PLease don't put false info on our forum. KTHXBYE

[junkiekommando]

He said NO(PPM) was high might be O2 or cat.
Haven't replace 02 nor the dead hooker :/

[junkiekommando]

blah can't really see it but it says
NO(PPM)
Max Ave Meas
815 259 1999

[bmw325csi]

That high NO numbers. You either have a lean fuel mixture or your cat/02 is gone.

[junkiekommando]

Fudge.. thanks

[junkiekommando]

how can i be sure its 02/cat or just lean mixture? or should i just replace cat and o2?

[bmw325csi]

I pretty sure your 02 would be responsible for the mixture to begin with. Not sure how to diagnose either of those. If you have no knowledge of them being changed, I would change them.

[PReta]

just replace the o2 and cat. thats what i did when i had a high NO reading. i actually changed the o2 and it made it worse. then i changed the cat and all is good.

[junkiekommando]

I pretty sure your 02 would be responsible for the mixture to begin with. Not sure how to diagnose either of those. If you have no knowledge of them being changed, I would change them.

Yeah ok the PO didn't mention anything about replacing O2.

just replace the o2 and cat. thats what i did when i had a high NO reading. i actually changed the o2 and it made it worse. then i changed the cat and all is good.

Not what i wanted to hear lol but ok i will replace both and hope it passes thanks!

[kalib0y]

you can try replacing a cat first but just replace both to be safe

[dvck]

Start with the o2 it's cheaper and may be all you need, a good number of shops will throw the car on their machine for a nominal fee without making it an official test, that way you know what's going on when you replace the o2.

Grab a universal o2 sensor from your local Oreilly, not autozone but Oreilly just avoid autozone and go to Oreilly, crimp your plug in and you'll be set for about 30$

[junkiekommando]

you can try replacing a cat first but just replace both to be safe

Since i don't know when the PO replaced the O2 i'll replace it. Now to look for a cat :/ thanks

[junkiekommando]

Start with the o2 it's cheaper and may be all you need, a good number of shops will throw the car on their machine for a nominal fee without making it an official test, that way you know what's going on when you replace the o2.

Grab a universal o2 sensor from your local Oreilly, not autozone but Oreilly just avoid autozone and go to Oreilly, crimp your plug in and you'll be set for about 30$

. i will go to oreilly right now. theres a smog place a block away from my house i will ask if they run a test to see what happens. thanks!