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|3-Series (E36) Chat relating to the BMW 3-Series from 1992-1999. Autodoodad Specific models include: BMW 316i, BMW 318i, BMW 318iS/ti, BMW 320, BMW 323, BMW 320, BMW 324, BMW 325, BMW 328.|
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Okay, original thread: Car is messed up thread
Here's the deal. I've replaced both the O2 sensor and the heater relay as advised only to find out that Code 1222 is actually an air leak per the Bentley manual. However, since I replaced the heater relay (I did the O2 sensor in December and the relay just now) the car will run fine when it's 'warmed up' but shitty when I first start it (aka cold).
Here's my questions:
1) How can it be an air leak when the problem disappears when the car is warm? And if it isn't, what could it be?
2) Is there some way that I can clear the CEL at home? Is this just a 'disconnect the battery' fix? And if I 'clear the codes', will this problem finally stop?
Thanks in advance guys.
PS- for drz and the rest of you guys, I'm offically moving from UB to werkz.
This code is stored when the DME detects excessive |
deviations in the air-fuel mixture (too rich or too lean) for longer
than 10 seconds. Possible causes: Fuel tank ran empty,
Incorrect Fuel Pressure, Injector valve defective or coked,
Engine Temperature Sensor defective, Secondary air leak,
Fuel evaporation control system defective, Air Flow Meter
defective and/or the combustion is being disturbed by
mechanical failure (Spark plugs, compression,
intake/exhaust valves, ...etc.)
I've been reading up on this. What are the chances of the engine temperature sensor going bad and which part number is it? I'm looking at pelican, but there's too many sensors.
Amanda have you given any consideration to it being the vacuum Lines? You could have a leak in there that could cause the poorer performance. If you are intersted in pursuing that I will do some hunting, I have seen a few places where the entire m42 vacuum line system is illustrated and I think has the parts for the hoses and where they all go.
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