91 318is Sputtering Problem - BMW Forum

MLC834 · 07-03-2006, 01:14 AM

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

Starmavin · 07-03-2006, 10:09 PM

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.

MLC834 · 07-04-2006, 04:57 PM

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

Jay

MLC834 · 07-06-2006, 12:13 AM

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!