My 88 BII runs rough about one min. after it starts, whether cold or hot. If I turn it off and restart it is fine. If I rev up to 3500 rpm is goes away too. It sometimes does it again after idling for a few minutes with the engine warm. I pulled codes and only got a stored code that there was intermittent pad info into the computer. A friend mechanic said it might be the fuel pressure regulator, but its not contolled by the computer is it? My thoughts are maybe an O2 sensor getting old. What other sensors could it be and what should I look for next?
Its pulling my fuel mileage down and I hate any problem that I can't trace down!!
