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so big dave.......when it acts like it hits the rev limiter, does it spit and pop a tiny bit like rev limiter mixed with small miss or tiny back fire? also, in your ecm.......is there a setting for auto or manual trans? if so is the gear based map selection? if so could it be stuck in N map?
the craziest part is its didnt do it when you unhooked the cam sensor. but then after running it a while with cam sensor unplugged it started doing it again. so it ran better in limp mode but then it must have re learned or its a mechanical issue and its coming apart or your timing belt jumped a tooth. just my thoughts
that's what sucks about belts vs timing chains. turn that motor backwards by accident and you run the risk of jumping a tooth.
I assume a subi belt is hydraulically tensioned? If so,don't you guys replace it with a manual tensioner for performance applications?
This is why I don't suspect a slipped tooth. If it was a slipped tooth it wouldn't run better in limp mode even for a moment.
i would tend to agree, however , big dave did replace the timing belt i believe before he fired the motor off for the first time. that link ecu requires he teach it the timing of the motor so he had to sinq it with the crank sensor on set up before he started it. if it skipped a tooth that could be as a possiblilty.
thanks for all the feed back on this problem. I have replaced both the cam and crank sensors. the sensing wires run away from all coil and plug wires. the sensor wires do run in a common harness back to the ecm. I tested all ground with ohm meter thy seem to be fine. I found at first, if I unplugged the cam sensor after staring the motor it would run to 6500 rpm. Sooooo. I had to go play!!!. ran it two days on the sand, with a switch on the cam sensor. switching the cam sensor off, after start up it would run ok. The 3rd day it would stay in the rev limit status. with the switch in ether position. I have not looked at it since then. I needed a break. that or it was a can of gas and a flame thrower. .