M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => Engine + Driveline => Topic started by: ten2doyle102 on May 16, 2011, 10:29:14 AM
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Lately, my 1991 318is has been acting a little odd. It runs a bit hot and its idle is rough, but it runs great on the highway and for crusing around town. However, after my last auto-x, the motor started missing pretty hard under load. Its quite similar to similar to hitting the revlimiter actually but then it will continue to rev the rest of the way. Usually occurs around 6k rpm and lasts for split second but happens randomly. When it does occur, its quite violent. The whole car shakes! When the motor is not load (free revving) it'll rev no problem. No mis fires, nothing. Car makes good power all the way up to that point where things go crazy... Starts every time and cruises fine on the highway. Gets decent gas mileage.... I don't know... its just when I want to get on it that I have this issue and only way up top.
I can try to record it sometime too if that helps.
It does have a chip, probably an ebay chip. It's also got the COP conversion and as well and a lightened fly wheel.
Any ideas?