I have a 1989 535i that I have recently acquired and it has a few niggling
problems. The most annoying at the moment is that at speeds above approx 90
kph it feels like it is surging. Not so much as a miss but it feels it want
to rev higher and thus surging. (Sorry it isn't a competition to see how
many time I can say surging lol, but I cant think of a better term. Any
ideas as to the possible causes??
Assuming your intake manifold and head gasket seals are not
degraded(vacuum leak), I would say timing chain. Here is a list of what
you should be fixing and probably haven't yet:
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.