E30 Zone

Hi Guys, i have developed a misfire at low revs but it clears after 2k rpm. Seems to be worse when the car warms up......

I am looking for another ECU as i fitted a Eprom chip i bought off here but it didnt work. The idle was rough and it wouldnt rev.

I refitted the original chip and all was back to normal. Went on a 400 mile journey with no problems but as i pulled out of the services after the last stop it started to misfire at low revs.

Tried disconnecting the battery again but it is still the same.

Any ideas what this could be...?

check all ur vacuum pipes for splits or leaks mate

Sprayed carb cleaner on pipes but nothing.....?

Probably this guy http://www.e30zone.net/e30zonewiki/inde ... emp_Sensor

I had a similar problem on my M40. Only when warm and sub 3k rpm iirc.

Its a sod to get to.