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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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Old 07-03-2006, 01:14 AM   #1 (permalink)
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91 318is Sputtering Problem

First Time User,

I have a mint 91 318is, I just replaced fuel pump and fuel pressure regulator in hope to fix a Hot Start Sputtering problem. Car starts and runs fine initially, however, sputters after the vehicle has been runned then turned off.
Example, first thing in the morning car works fine, parked at work till lunch time, car starts fine but will sputter when taking off, this only occurs when vehicle engine is hot. I was told that it may be a thermo sensor relay, is this possible. Any suggestions, Thanks

Jay
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Old 07-03-2006, 10:09 PM   #2 (permalink)
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Pull the spark plug boots out and take a look at them, look for dampness or oil soaked boots. An ECT sensor could cause that problem however it would kick a MIL.
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Old 07-04-2006, 04:57 PM   #3 (permalink)
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I've cleaned the spark plug cables on many occassions as a result of oil build up in the spark plug port. They appear fine, but I guess it's time for a new wire set. Thanks

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Old 07-06-2006, 12:13 AM   #4 (permalink)
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Replacing spark plug cable didn't cure the problem, o2 sensor works fine, car still sputters under throttle when hot. I live on Guam, never have to worry about cold weather starting conditions.

Still trying to figure out why car sputters only when hot and only after second start. Anyone have recommendations!
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