Bad sputtering/misfire?

[ak-]

Bad CPS, you'll thank me later.

And if not, you have to kiss Castro.

[IRON-E]

And if not, you have to kiss Castro.

I'll give him a behindman.

[tinkerputzer]

I really really don't want to revert back to an AFM, as the MAF conversion also had a tune specially made for it and a bunch of wires will have to be pulled and such to put back the AFM along with finding a stock 173 chip.

This is what I meant by taking back to stock form. Otherwise you cannot rule out the possibility that something with your maf conversion took a crap.

Also when you said CPS for some reason I was thinking of the CTS. However I don't think the CPS is the issue. If it was I don't think the car would run at all.

If your O2 sensor has an unknown history I would definitely change it. FWIW BMW recommends changing the O2 sensor every 50K.

[bmw325csi]

Good luck with this one Abby. Mine did the exact same thing, I mean exact.
Ended up being a fuel injector supposedly. Got that changed out, ran perfect for like 2 weeks and now its acting up again.

Fuck a M20, especially fuck a MAF kitted M20.

[ak-]

This is what I meant by taking back to stock form. Otherwise you cannot rule out the possibility that something with your maf conversion took a crap.

Also when you said CPS for some reason I was thinking of the CTS. However I don't think the CPS is the issue. If it was I don't think the car would run at all.

If your O2 sensor has an unknown history I would definitely change it. FWIW BMW recommends changing the O2 sensor every 50K.

Okay I see.
And I'll be changing the O2 sensor this week hopefully. Thank you man.

Good luck with this one Abby. Mine did the exact same thing, I mean exact.
Ended up being a fuel injector supposedly. Got that changed out, ran perfect for like 2 weeks and now its acting up again.

Fuck a M20, especially fuck a MAF kitted M20.

Really? :(

What'd you end up doing Harry?

[IRON-E]

Please buy a new CPS along with your 02 sensor. When I had troubles with mine, it would hold enough charge to turn the car on and to get me going on a cold running engine for 5-10 miles, after that the car would start to sputter and bog out as if it was starving for fuel. Finally it started to turn off on me, at one time I thought it was a bad ECU but after asking close to a dozen people and changing all of the related things close to the problem. I got it to the Castros to find out my CPS was cracked and had some wires exposed. I could have saved myself a lot of money if I just changed that first.

[bmw325csi]

Really? :(

What'd you end up doing Harry?

Im living with it for now. Im going to change all 6 injectors with ones that I rebuilt. I hope that will solve it.

[ak-]

Please buy a new CPS along with your 02 sensor. When I had troubles with mine, it would hold enough charge to turn the car on and to get me going on a cold running engine for 5-10 miles, after that the car would start to sputter and bog out as if it was starving for fuel. Finally it started to turn off on me, at one time I thought it was a bad ECU but after asking close to a dozen people and changing all of the related things close to the problem. I got it to the Castros to find out my CPS was cracked and had some wires exposed. I could have saved myself a lot of money if I just changed that first.

You're winning me over right now because when I turn on my car, I can get to where I want on a cold engine only for maybe 2 miles if that, then it will start dancing and sputter on me.
Think I'm making a trip to Ireland Eng. today then, thanks E.

Good luck with yours Harry. Did you also change the named items?

[IRON-E]

You're winning me over right now because when I turn on my car, I can get to where I want on a cold engine only for maybe 2 miles if that, then it will start dancing and sputter on me.
Think I'm making a trip to Ireland Eng. today then, thanks E.

Good luck with yours Harry. Did you also change the named items?

Good for you, I hope you report back with good news.

[bmw325csi]

yup my CPS was changed out also.

[ak-]

Installing new O2 sensor and CPS tomorrow morning and I'll update this.
If nothing, I'm off to Castro's for further inspection :|

Thanks again people

[ak-]

Well, some good news and bad news I guess.

Changed to a brand new O2 sensor and didn't really get any improvements and still had a CEL light.
Disconnected the battery for 2 minutes, then turned on the car and my CEL went away. Took it out for a drive and I'd say it runs around 40% better now.

I still sputter, but my RPMs still go up, when giving some gas after letting go.
It used to sputter and hit a brick wall at around 3rpm and have no go at all.

I'm a little bit confident to drive it to the shop as I had zero before.

Bad news is my CPS bolt is stripped so I can't change that out at the moment :-|

[IRON-E]

Bad news is my CPS bolt is stripped so I can't change that out at the moment :-|

Bingo! Change that shit and you'll be done.

[ak-]

Bingo! Change that shit and you'll be done.

Word, hopefully.
Mine was covered in gunk and oil by the way if that means anything since they are magnetic sensors.

[ChrisK]

with regards to sounding like a camaro, sounds like the flange from the exhaust manifold to the cat is shot. Same thing happened to me- gas smell, horrible american muscle sound :)