as i understand the car will not idle in close loop mode, when its in open loop mode it runs but not good. it will run for a couple of seconds in close loop and the engine will oscillate high and low 2 or 3 times then it will die. so I disconnected the MAP Sensor and the vacuum line and put it into open loop road, it runs fine, but gets horrible fuel economy of about 7 miles. I have replaced the oxygen sensor, the distributor cap, spark plugs and wires, 2 old vacuum lines. And it still isn't running right. Could it be the throttle position senser? I am at a loss.
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