Join Date: Jun 2004
Location: Worthington, KY
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You guys are awesome... First of all, I want to thank ALL of you for replying to this. I've been out of pocket for a few days, and all this is making me feel a little better. Ironically, I've been searching for a way to determine what code my CHECK ENGINE LIGHT might be pulsing--why, you might ask??? Well, it came on last night. IMAGINE THAT.
I think this is all coincidence, I really do, but coming clean, I'll tell you what I've done. Over the last two days, I've began to tune up my car because I'll be danged if I give BMW 800 bones to change a few spark plugs and filters. Anyway, I've always put 87 octane in my car with no problems. However, during the tune up, I added some "Lucas Liquid Tune Up", which is a fuel system cleaner (I"ve had really good luck with it in other cars). I had about 320 miles on the gas tank when the check engine light illuminated. Second, I changed the air filter--replaced it with a K & N air filter--no problems, slid right in preoiled. Next, I changed the oil. I changed the filter with a BMW canister filter (O-ring, copper drain gasket) and BMW performance full synthetic oil (7 quarts). Last, I changed the spark plugs. It had a set of NGK's in it that looked pretty charred, although it wasn't missing or anything. I called BMW and asked for the part number to the spark plugs that would go into the car if they replaced them, and they coughed it up. Called the local parts store, and found a similar Bosch plug with a lifetime warranty that was one spec above what BMW was gonna sell me for $8 less per plug--Bosch Platinum IV plugs. Now, roughly 50-75 miles later, I get a check engine light, but make no mistake about it, the car runs FANTASTIC. I have an RX-7 that I restored, other than a paint job, and I thought it ran great (I'm trying to sell it by the way...), but this car runs so much smoother than any other I've had. But, what do you expect out of a BMW? It should, right? Well, so I'm sort of at a loss... I want this light off my dash, and I'd love to know why it's there.
It sounds like you guys are telling me that it could be this secondary air pump causing my light to illuminate as it was showing mechanical signs of failure for a while... But, I'm man enough to admit that I could have caused it with my Shadetree attitude of car maintenance. However, my car really does run fine. I changed the plugs one at a time and even drew diagrams so that I would assure all would go back the way I found it. It was quite easy, really. Of course, the oil and filter change as well as the air filter change was easy too... My oil level is fine, and I haven't noticed any leaks. I don't know, I just don't think the light is due to anything I've done.
If anyone knows what I can do from here, especially in the way of finding out why that light is on, please let me know. Anyone know any tricks to asking the computer magical questions without going to OZ (the dealer).