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E36General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.
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Your Ride: 1992
1992 381i Sedan Engine Problem
On my 381i when starting it sometimes it seems to backfire and blow off the upper or lower idle control valve hoses. The last time it did this it blew a hole in the Air Mass Meter boot. I am not sure what is causing this problem. This is intermittent and varies how often in consesion it happens. Any help is apprciated.
Location: SW corner of CO, live in country near village called Mancos
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Your Ride: 1992 325i & 2004 325xi
sometimes a backfire thru induction is caused by lean mixture--at least in normally aspirated motors. Since mixture is controlled by OB computer, which relies on input from a number of sensors, diagnosis may be difficult without proper instrumentation. Swapping parts is usually not a good way to work, but you might want to test/replace Oxy sensors.
04-18-2007, 07:34 PM
I keep forgetting that - I have a great memory but it doesn't last long
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