Cold start engine shakes and sputters

[roundel318]

Interesting, do you have a reset tool?
I had one get logged in mine a while back, even though the engine was running fine. Got it reset and it has not returned. Would be interesting to see if yours comes back.
1222 is Primary O2 sensor lean/rich for more than 10 seconds.
Did you test your voltage regulator? (probably doesnt matter)

[bearsbmw]

reset it lotz of time's .. Voltage regulator is new and built into the new alternator ... system is charging at 14 volt's

[roundel318]

just past the AFM, the large rubber air boot has a rubber hose with a 90 degree joint that leads down to the medusa.
The joint that leads to down there has a juntion that connects that, a hose coming from the ICV into the rest of the engine / intake manifold (wherever it goes, not sure exactly off the top of my head)
While it sounds like a hose, it probably isnt
Just thinking out loud some more :confused:

[bearsbmw]

presure and smoke test show's zero leaks at 10 psi

[roundel318]

I think the next thing to rule out would be the ECU.
I will send my spare to you for a week or two for $5 + you pay shipping both ways.
You break it, etc, you replace it.
I have paypal, btw.

[bearsbmw]

I can get a ECU here no problem and I also have another chip I can swap into the ECU and see what happens

[roundel318]

Nice, it's great to have another spare
How is the fuel pressure situation?

[bearsbmw]

good fuel hit's 90psi when I hit 8psi of boost

I do have a turbo but because my AFM is befor the Intake manifold on the engine and not befor the turbo I can run all these tests in NA condition by just removing a peice of charge pipe and unhooking the rising rate fuel regulator... this is just for the people that are going to say you need a tune and I know its not a tune issue

[roundel318]

While it would be good to test it N/A style, I have no experience with a turbo on this motor. :confused:
How long would it take you to do this test?

[xwill112x]

can everyone please post all the item's they replaced when trying to fix this problem

Me=

AFM
02 sensor
Coolant Temp Sensor
Spark plugs
Intake gaskets
Alternator
fuel filter
Relays
Fuses
battery

Me=

plugs
air filter
02
cleaned the throttle body out
fuel pump
fuel injector cleaner
fuses


mine seems to want to run really lean it seems...

seems like something to deal with the air/fuel mixture.. im not to worried, b/c after its warm, it runs fine.

[bearsbmw]

While it would be good to test it N/A style, I have no experience with a turbo on this motor. :confused:
How long would it take you to do this test?

All test's have been and while under NA!

[bearsbmw]

Do any of you have realy bad black water spatter shooting from the exhaust? if I put a white sheet a foot away from the exhaust on cold start the sheet will be black in under 2 mins... runing super rich on start up!!

[xwill112x]

thinking out loud here...

maybe it's not really a problem..but more of something you have to live with...since our cars are getting older..they may not run perfect at start up and it takes the ecu a while to adjust to 14.7:1 due to the o2 giving a good reading until its warm...while as newer cars have more advanced technology and have phased that out?

[bearsbmw]

thinking out loud here...

maybe it's not really a problem..but more of something you have to live with...since our cars are getting older..they may not run perfect at start up and it takes the ecu a while to adjust to 14.7:1 due to the o2 giving a good reading until its warm...while as newer cars have more advanced technology and have phased that out?

I will have to disagree with above due to the fact that this just started happening full out one day insted of coming on slowly and geting worse and worse

[roundel318]

While doodling around, I disconnected my TPS and experienced similar behaviour, not sure if someone has had a TPS be wonky when cold and work correctly when it starts to warm up?
Probably not likely, but just tossing it out for others to chew over :confused: