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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 08-11-2016, 11:47 AM   #1
shields42
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Join Date: Jan 2013
Location: Charlotte, NC
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My Ride: '00 323i Sport Wagon
Weird errors all over the place

My 2000 323i wagon blew a coil 2 days ago and I replaced it same-day with a BREMI coil. Worked like a charm for all of 16 hours.

Yesterday afternoon, out of nowhere, my car begins to shudder, lose almost all power, and throws SES, EML, and DSC. I pulled over, turned it off, waited 30 seconds, and turned it back on. SES was the only light that remained. At that point, I put the hazards on, and made a very slow bee line to Advance Auto to get the codes read. P0101 (MAF error) and P1510 (ICV error). I got some MAF cleaner and was on my way. I removed the MAF, sprayed the crap out of it as per the directions, and waited about 30 minutes for it to dry. I reinstalled it and went for a test drive. All was well. I got the code cleared and and headed home. Later that night, I went over to a friend's house (5 miles) and the same trifecta of lights came on and the car went into limp mode. I read that low ATF can cause this, so I topped off the ATF reservoir and crossed my fingers. I waited about 20 minutes and went for a test drive. Sluggish, underpowered, and lots of radiator fan noise. I decided to call it a night and try to continue diagnosing tomorrow.

This morning, I turned on the car, and all the lights were off. No issues getting to work at all. It drove like it usually does! It was very unsettling...

So what do I do here? Any thoughts on what the root cause of my mini disasters?
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Old 08-11-2016, 12:47 PM   #2
2003silver330i
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Since the problem didn't exist before the coil change I would start checking for a broken, disconnected, or pinched vacuum hose around the valve cover. Maybe even a loose engine harness connector.
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Last edited by 2003silver330i; 08-11-2016 at 12:48 PM.
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Old 08-11-2016, 01:38 PM   #3
shields42
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The valve cover being the black plastic piece that says ====BMW== on top?
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Old 08-11-2016, 02:41 PM   #4
Onizukachan
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How are you:
A: checking the atf since there is no dipstick
B: topping off the reservoir since there is no reservoir?


I think you just checked your power steering fluid.
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Old 08-11-2016, 02:47 PM   #5
shields42
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Ah son of a bitch. It was definitely steering fluid. It said ATF only, so I assumed it was for ATF! And there are little rings on the bottom of the cap that I assume indicated safe levels. So I raised it to the middle ring. Guess I'm all set on power steering fluid. So we think it might be an issue with the black engine cover pinching something?
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Old 08-11-2016, 03:41 PM   #6
jfoj
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See my signature below for the Hidden OBC Menu, watch the charging Voltage and make sure this is not a problem. 13.5-14.5 Volts when the engine is running is typical.

Also get the battery checked at the parts store as well.
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Temp Info - http://forum.e46fanatics.com/showthread.php?t=964491

Hidden OBC Menu - Check Voltage, Temp, Fuel Level - http://forum.e46fanatics.com/showthread.php?t=239619

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Old 08-11-2016, 09:50 PM   #7
2003silver330i
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Try cleaning your ICV as well if you don't find any pinch/broken hoses and or loose connectors.
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