Fuel/ignition Problems - BMW Forum - BimmerWerkz.com

3-Series (E21, E30) Chat relating to the BMW 3-Series from 1975-1983 and 1984-1991 line. Specific models: BMW 315, BMW 316, BMW 318, BMW 318i, BMW 320/4, BMW 320i, BMW 320/6, BMW 323i, BMW 320i. E30 Family models include: BMW 325e, BMW 325i, BMW 325is, BMW 325ix.

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post #1 of 2 (permalink) Old 04-26-2005, 10:11 AM Thread Starter
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I have a 91 318is. When I leave for work in the morning, or after the car has sat for several hours, it starts & runs fine. If I make a short stop & the car is not running for say 5 to 10 minutes, it will start fine but the engine will start missing seconds after the restart & if i am moving the car will gradually slow to a stop & the check engine light will come. At that point if I let it sit without making an attempt to keep it running, the engine will die. If I try to keep it running I can tap on the gas pedal a couple of time & it will sputter through the lower RPM's, then rev up. When i let off of the gas pedal & the engine comes back down to an idle it will still be running rough. This condition last for maybe 1 to 2 minutes.If I start the car & let it sit and idle for a couple of minutes I can hear the tone of the engine change & then it will smooth out & the idle will jump up a couple of hundred RPM's to normal. A friend of mine is a mechanic for BMW, he just happened to be in town, I caught him right before he was leaving. He gave it a quick once over & noticed that while all of this was happening, it was accompanied by a lean exhaust smell. He did not have any tools with him, but thought that it might be the air flow meter.
I was wondering if anyone had any suggetions? I am also interested in buying a Bentley manual. Where would be a good place to purchase it?
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post #2 of 2 (permalink) Old 05-01-2005, 02:00 PM
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bad man working is an unknown quantity at this point
It could be the air flow meter I take it the smell was fuel not lean as you canít smell a lean mixture, it sounds like itís over fuelling to me the other course of this especially as it only happens when itís hot is the temp sender for the engine management
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