I think I know what the problem is here, I just want to make sure that it makes sense before I go tear my baby apart.
OK, my '87 325is will idle at either 600rpm or 2000rpm. Nowhere inbetween.
When I raise the idle screw, it goes up to 2000, and when I lower it, it goes down to 600. It won't go anywhere inbetween.
So, what I'm thinking is that the throttle position sensor is out of adjustment, so that when I try to raise the idle, it takes the TPS off of the "throttle closed" switch and raises it up to 2000rpm. So, if I adjust the TPS, and then turn the idle up a little it should idle closer to 750 or so. Right?
I would just leave it at 600, but my car burns a lot of oil (rebuild soon) and as a result idles with a terrible lope at 600, and almost no power just off of idle.
Does this make sens to anyone else?
OK, my '87 325is will idle at either 600rpm or 2000rpm. Nowhere inbetween.
When I raise the idle screw, it goes up to 2000, and when I lower it, it goes down to 600. It won't go anywhere inbetween.
So, what I'm thinking is that the throttle position sensor is out of adjustment, so that when I try to raise the idle, it takes the TPS off of the "throttle closed" switch and raises it up to 2000rpm. So, if I adjust the TPS, and then turn the idle up a little it should idle closer to 750 or so. Right?
I would just leave it at 600, but my car burns a lot of oil (rebuild soon) and as a result idles with a terrible lope at 600, and almost no power just off of idle.
Does this make sens to anyone else?
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