Code 1222?

[staysideways]

Hi R3V I was driving my e30 last night back from the socal meet and it drove fine until about 3/4 of a mile after I exit the freeway. I was just in 2nd (auto) and was doing about 50 when i felt suden loss of power. It did completely nothing even when I went 100% throttle with the kick down it felt like as if the car was off. I pulled over and let it roll in drive and all ot did was just bog and idle like crap. When j pressed the gas while rolling at about 5mph it bogged even more and turned on the MIL (CEL). i just had it rolling for about 7 minutes and it did climb a little uphill part at about 5mph and then all of a sudden power came back and it started to run fine until i messed with it again and put it to the floor. It felt as if i was out of has but i have 3/4 of 91 in the tank. I got home to do the stomp test and i got 1222.

I know that 1222 means cars either operating rich on lean. I am sure its lean because it feels as if i need fas but i have gas. It drove fine today morning to work.

The parts that can cause this are:
O2 sensor
Afm
Vaccum leak
Fuel filter (new)
Icv? (New)
Tps?
Temp switch (new)
Fuel pump
Sparkplugs (new)
Wires (new)
Cap and rotor?
Or faulty injectors?

My econometer doesnt work but I have measured and approximately I get about 8mpg city and 13mpg highway

Car has about 183xxx miles on i it and has never done this before.

Note: my friend borrowed my car and scraped the exhaust and there is a hole after the cat past the flanges. Car also has a new alternator battery and all fuses look fine.

I will do a smoke test today and keep you guys informed. Any help would be appreciated. Thank you.

1989 E30 325i Sedan Alpine

[jlevie]

If a properly executed smoke test revealed no leaks I'd be thinking of a problem with the engine timing reference data, the fuel delivery system or injectors, the AFM, or possibly the DME.

[staysideways]

If a properly executed smoke test revealed no leaks I'd be thinking of a problem with the engine timing reference data, the fuel delivery system or injectors, the AFM, or possibly the DME.

I checked the afms rail condition and the slider they were both in excellent condition. I dont know anything about its timing but i did do a timing belt about 8 months ago and while i was there i did fuel hoses lines and filter but i havnt touched the fuel pump. And i just dont wanna throw random parts on it until it gets fixed because at the moment i have put all the cheap ones on so leaves me with a valve job for now?

1989 E30 325i Sedan Alpine

[jlevie]

Before I replaced any more parts (and I only use OE or OEM parts) I'd do more diagnostics. I have a PDF on AFM testing that I can email you. Send me a PM with your email address. I'd start with a proper smoke test (which you might have done) and then check fuel rail pressure with the engine running. This being an M20B25 engine you should see a bit less than 3.0bar at idle and 3.0bar with the throttle open.

BTW: A properly conducted smoke test means plugging the exhaust and replacing the AFM with a plug containing a nipple for smoke injection. Then you pressurize with 2-4psi of long persistence oil smoke for about 10 minutes while looking for leaks. This pretty much means using a pro type smoke machine. If any major leaks are found, they mist be repaired and the test repeated.

[staysideways]

Before I replaced any more parts (and I only use OE or OEM parts) I'd do more diagnostics. I have a PDF on AFM testing that I can email you. Send me a PM with your email address. I'd start with a proper smoke test (which you might have done) and then check fuel rail pressure with the engine running. This being an M20B25 engine you should see a bit less than 3.0bar at idle and 3.0bar with the throttle open.

BTW: A properly conducted smoke test means plugging the exhaust and replacing the AFM with a plug containing a nipple for smoke injection. Then you pressurize with 2-4psi of long persistence oil smoke for about 10 minutes while looking for leaks. This pretty much means using a pro type smoke machine. If any major leaks are found, they mist be repaired and the test repeated.

Yea thats what i did with the smoke test. And the smoke machine was a good one too.

But anyways my email is argadt4@gmail.com thanks

1989 E30 325i Sedan Alpine