Hello, Thank you for click this topic,
First I appreciation this forum, because I really need help for this issue,
My E30 already drove 5 years in my hand,
seems 2 years ago, My E30 first misfire on the highway,
in misfire condition, gas has no any response,
then I keep rolling, (no stepping clutch), Instrument cluster looks like no any thing happen,
when I keep the Vehicle rolling for the 10 -15 sec ago(70-80 KM) , have some chance to wake up Engine,
due to the misfire some times occur on week, some times occur on 2 month later, even 6 month not happen,
and usually also have shaking symptom, feels like engine stop and resume on 1 sec within,
cause the troubleshooting is very hard, Could suggest me next step? as follow is my guess,
1. Pulse sensor (2017.12.30 replace)
2. Coil
3. fuel pump(2017.7.24 replace)
4. DME
Misfire history
2021/01/11 misfire
2021/01/13 misfire x2
2021/01/20 shaking.misfire
2021/01/28 shaking.misfire x2
2021/04/15 misfire x2 full fuel
2021/05/04 misfire x4 low fuel
2021/05/06 misfire full fuel
2021/07/06 shaking x4
2021/07/15 shaking x multi
M40B16 misfire unpredictable on the highway.
Moderator: martauto
