engine error?

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12-07-2007, 12:56 PM

#11

zoooming_by

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Originally Posted by jorode60' post='504069' date='Dec 7 2007, 12:37 PM

Hey guys I have not written in some time now butI?m going to try to do so more often though?

Anyway, here is my problem after keeping my 545i in the garage for 3 days it jerked very badly and gave me an engine error message when i turned it on.
I took the car to the dealership and they said that two pistons misfired. When I asked why it happened I was told that it has been happening lately down here in Texas b/c we are getting bad gas.
I don?t know whether to believe this or not. What do you guys think about the diagnosis?

JOE

For what is worth, my friend's E320 experienced a couple of misfires about month ago, cylinder 1 &2 - that set off the Check Engine light. Mercedes dealership told him that they need to replace all the wiring and spark plugs, cost him about $890. But the check engine light came back on two days ago with the same error code and this time they told him that it could be a problem with the type of gas he used! They said that there has been a surge in Dallas area recently. This was the Ewing Autohaus in Plano, TX.

Rgrds,

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12-07-2007, 01:11 PM

#12

zoooming_by

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Originally Posted by jorode60' post='504143' date='Dec 7 2007, 03:38 PM

Well the reason it worries me is because at times even after driving and most often at stops i feel a rumble and jerky sensation caused by the engine. I think it may be an issue but I dont know if it warrants further investigation.

As you know, the car computer constantly optimizes the gas / air ratio based on many inputs including the driving style. I believe if you keep driving the car, after few complete driving cycles, the car computer adjust back and finds its optimal performance points.

Once playing with a diagnostic tool in my friends garage hooked to my older 5 (e39), I accidentally reset all "adaptations". The engine run very rough for a couple of days and then slowly adjusted back and found its new adaptation points. I would say to give it a few days - I would try a fuel system cleaner too before taking it back to the dealer.

Regards,

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12-07-2007, 01:26 PM

#13

jorode60

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Originally Posted by zoooming_by' post='504165' date='Dec 7 2007, 06:11 PM

Okay Im ok with that. What fuel cleaner? I hope I dont open a new topic here..

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12-07-2007, 02:17 PM

#14

zoooming_by

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Originally Posted by jorode60' post='504174' date='Dec 7 2007, 04:26 PM

Okay Im ok with that. What fuel cleaner? I hope I dont open a new topic here..

I use the autohausaz.com when I order parts/Oil/Filters/viper blades for my car. Here is the link to what you need
(when buy more than $50 worth of stuff, the shipment is free):

http://www.autohausaz.com/search/product.a...uids/Treatments

I am not sure what brand is the best if you just buying it off the shelf - I would probably buy the most expensive from Walmart :^)

/z

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