Hi,
I have some questions to the smarter ones. So the car is bmw e36 with the swapped m50b25tu in it. When I first bought it, it came without O2 sensor, so I decided to buy a new one Bosch and plug it in. But it changed nothing tbh.
So, I have never realised until now, that my car runs great only when just started up/cold. When the temp hits 90, the rpm rises a good 150-200 rpm, rev hang appears between shifts and car starts hesitating when accelerating. Sometimes it hesitates when cold too, but when its cold, the rpm is great and there is no rev hang.
I am tired of this shit and its not a pleasure to drive that car anymore with this problem. Its been for a loooong time now. But yesterday was my happiest day ever I think.
I was driving my car like usual, but when the fuel gauge light came on, that there is not much fuel left in the tank, my car was accelerating like it always should! No hesitation at all, it only goes faster and faster through the whole rpm range, and it is what I want always to happen when I drive this car. The rpm was still 150-200 higher than it should and rev hang was there between shifts, but atleast it went hard when I pressed the gas pedal!!!!
So my questions are-
How can I check if my O2 senor works properly? Cuz it does nothing when I unplug it and it changed absolutely nothing when I first plugged it in.
Can DME cause a problem like that?
So now I had an idea after yesterdays great day. Maybe the car somehow runs too rich when there is a lot of fuel in the car so the ecu reads it and rises up the rpm, and thats why there is rev hang and hesitation when accelerating. But I dont know if the problem is really in it and how to get rid of it.
The fact that this car ran without O2 sensor before seems weird to me. O2 sensor is the first thing that I want to check and now I really feel that the mixture it too rich and it gets too much fuel.
So, every information will be useful I think. Help me to makenme happy again 😃
I have some questions to the smarter ones. So the car is bmw e36 with the swapped m50b25tu in it. When I first bought it, it came without O2 sensor, so I decided to buy a new one Bosch and plug it in. But it changed nothing tbh.
So, I have never realised until now, that my car runs great only when just started up/cold. When the temp hits 90, the rpm rises a good 150-200 rpm, rev hang appears between shifts and car starts hesitating when accelerating. Sometimes it hesitates when cold too, but when its cold, the rpm is great and there is no rev hang.
I am tired of this shit and its not a pleasure to drive that car anymore with this problem. Its been for a loooong time now. But yesterday was my happiest day ever I think.
I was driving my car like usual, but when the fuel gauge light came on, that there is not much fuel left in the tank, my car was accelerating like it always should! No hesitation at all, it only goes faster and faster through the whole rpm range, and it is what I want always to happen when I drive this car. The rpm was still 150-200 higher than it should and rev hang was there between shifts, but atleast it went hard when I pressed the gas pedal!!!!
So my questions are-
How can I check if my O2 senor works properly? Cuz it does nothing when I unplug it and it changed absolutely nothing when I first plugged it in.
Can DME cause a problem like that?
So now I had an idea after yesterdays great day. Maybe the car somehow runs too rich when there is a lot of fuel in the car so the ecu reads it and rises up the rpm, and thats why there is rev hang and hesitation when accelerating. But I dont know if the problem is really in it and how to get rid of it.
The fact that this car ran without O2 sensor before seems weird to me. O2 sensor is the first thing that I want to check and now I really feel that the mixture it too rich and it gets too much fuel.
So, every information will be useful I think. Help me to makenme happy again 😃
