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Old 02-01-2010, 08:46 AM   #1
Pierce330
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Issue starting this morning + check engine

Hi All ,

So, this morning I turned on my car (after not being started for 2 days) and there was a lot of rough idling. When I gave it some gas hoping to clear the problem, it sounded as though I had a huge hole in my exhaust. Then my check engine light comes on. So I turn off my car, the problem goes away, but the check engine light is still on. It runs perfect again...

Any idea what the heck happened this morning...I assume that it is weather related...my car is an 02 330i with 125k...

Thanks...
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Old 02-01-2010, 08:47 AM   #2
nachos23
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got to check the codes.... sounds like mis-fires.....
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Old 02-01-2010, 08:51 AM   #3
Pierce330
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I think that is what happened!...I am pretty sure it was a cold related problem...
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Old 02-01-2010, 09:12 AM   #4
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cold shouldn't create mis-fires, moisture does.... need to see what codes were thrown.
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Old 02-01-2010, 10:49 AM   #5
Pierce330
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I am getting the car scanned after work today...

Thanks for the speedy replies Nachos
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Old 02-01-2010, 11:45 AM   #6
topaz330ci
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Let us know once you get news!
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Old 02-01-2010, 05:49 PM   #7
Pierce330
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Scanned it...engine miss fire cylinders 1 and 6...going to replace my plugs and air filter tomorrow...

Thanks for the confirmation guys...
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Old 02-01-2010, 07:38 PM   #8
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Have you changed your spark plugs in your car ?
If not you should have done it around 90 to 100,000km that's what BMW recommends I think

Inspection II details:

Read out diagnostic system
Replace fuel filter
Check engine cooling system/heater hose connections for leaks.
Check coolant level and antifreeze protection level; add coolant if necessary.
Check level of brake and clutch fluid in reservoir; add fluid if required.
Check windshield washer fluid level and antifreeze protection. Fill up and/or correct if necessary.
Check air conditioner for operation.
Reset Service Indicator.
Replace spark plugs.
Replace intake air cleaner element.

My advice is when you own a BMW you need to do the maintenance just my 2 cents
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Old 02-01-2010, 07:59 PM   #9
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Yes I have, already did an inspection II...
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Old 02-02-2010, 02:24 AM   #10
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Check your DISA, especially if you've never had an issue before. Posted thread last week as I had an airleak tha probably existed for ages in the seal around the DISA and it began throwing mis-fire codes all over the place.. For several yrs, would occassionally get P0171 and P0174 Lean Bank 1 and 2 codes, cleared and no codes for 6 months or more... 2 weeks ago (with the real cold) the codes changed to misfires (usually @ idle or when slowing down)..... problem was DISA seal and internal flap on DISA (flap controls air/fuel mix @ low RPMs)...... use come combustion chamber cleaner and spray all around DISA seal and see if engine speed changes...... If yes, pull DISA and reseal....
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Old 02-02-2010, 08:40 AM   #11
Pierce330
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Thanks Nachos, I saw the readings...it was 1 & 6...the readings in those two cylinders were very low...my air filter is also filthy...but I will look into DISA
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Old 02-02-2010, 11:16 AM   #12
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if you want to check coil condition, move 1 and 6 to other plugs and see if codes move to new plugs..... assuming you can re-create the problem.... try a plant mister to add moisture to air around coils.... see if you can get mis-fire.....
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Old 02-02-2010, 11:21 AM   #13
Pierce330
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Checked condition of coils as well...
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Old 02-03-2010, 10:12 PM   #14
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did you check the DISA for leaks and function? still puttin my $$ on that......
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Old 02-04-2010, 08:24 AM   #15
Pierce330
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Yes I did...
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