my e30 revs to 4500

[Vince30]

And a car with something like that is a terrible idea and it was a joke. Is the revlimiter kicking in or is it bogging?

[e30-325]

oil isnt low and its not over heating at all

[Vince30]

Sounds like it has a guardian mode lol. Mercruiser has what they call guardian mode that limits revs if its over heating or has low oil.

[e30-325]

its an 87 325is

[fiftytakedowns]

must have n eta

[e30-325]

and it wont go any higher. if i start it up cold, it will rev to its normal limiter but once it warms up it will just stop at 4500. I dont know if this is related to the problem i have on the highway when i drive. i drive at like 75mph and sometimes the car will just buck like a bull for a quick second, the CEL comes on as it 'bucks' and then it will go back to normal. anyone? im running out of things to check/ideas