Hey this is annoying but im desperately looking for answers at this point and ive seen you have experience with turboing these cars. I've been fighting a misfire in my e36 for almost a year now and at a loss. I've narrowed it down to the fact the car seems to only register the first fuel bank in the ecu as it was previously turboed, I've tried multiple different tuned ecu's, and everything down to the plugs, multiple crank sensors and all that has been had multiple thrown at it. The whole engine harness was swapped as it didnt have front o2's. The timing was off a tooth and just finished getting done.. and it didnt change the problem, let alone change how the car ran at all. Most of that is all back to stock and it still wont show a second bank which causes an odd misfire under max load after a certain duration, if car is turned off the car will reset and the car could drive without issue until it goes under max load again and after a certain duration but the duration seems to get shorter as the car repeats this and gets hot I think i dont know (but for example trying to push the car through an event it seems to come back quicker).
That sounds like an absolute headache and I wish I had an answer lol. I would've mentioned crank sensor but you've already changed those. Did you use OEM BMW (Not OE spec) cause only bmw ones from dealership are reliable. Since it's also a hot problem you can try cam sensor also. I had a hot start problem that turned out to be cam sensor. Car ran perfect from a cold start but hot it would die or be very hard to drive. I'm assuming it's obd1 since it's reading banks so it should have two o2 sensors in each set of headers, could they possibly be backwards? After that I would start looking at fuel. Maybe at high demand your fuel pump is getting weak or fuel pressure going down causing a lean/misfire then puts the car in limp mode until it resets. Other than that I'm stumped also
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Hey this is annoying but im desperately looking for answers at this point and ive seen you have experience with turboing these cars. I've been fighting a misfire in my e36 for almost a year now and at a loss. I've narrowed it down to the fact the car seems to only register the first fuel bank in the ecu as it was previously turboed, I've tried multiple different tuned ecu's, and everything down to the plugs, multiple crank sensors and all that has been had multiple thrown at it. The whole engine harness was swapped as it didnt have front o2's. The timing was off a tooth and just finished getting done.. and it didnt change the problem, let alone change how the car ran at all. Most of that is all back to stock and it still wont show a second bank which causes an odd misfire under max load after a certain duration, if car is turned off the car will reset and the car could drive without issue until it goes under max load again and after a certain duration but the duration seems to get shorter as the car repeats this and gets hot I think i dont know (but for example trying to push the car through an event it seems to come back quicker).
That sounds like an absolute headache and I wish I had an answer lol. I would've mentioned crank sensor but you've already changed those. Did you use OEM BMW (Not OE spec) cause only bmw ones from dealership are reliable. Since it's also a hot problem you can try cam sensor also. I had a hot start problem that turned out to be cam sensor. Car ran perfect from a cold start but hot it would die or be very hard to drive. I'm assuming it's obd1 since it's reading banks so it should have two o2 sensors in each set of headers, could they possibly be backwards? After that I would start looking at fuel. Maybe at high demand your fuel pump is getting weak or fuel pressure going down causing a lean/misfire then puts the car in limp mode until it resets. Other than that I'm stumped also