gmrulz4u Posted November 17, 2002 Report Share Posted November 17, 2002 As I understand, and have been told, the MAP(Manifold Absolute Pressure) sensor is supposed to react to changes in engine vacuum/pressure. ie. at idle, the voltage should be low, at WOT(wide open throttle) it should be about the same as the atmospheric baramotreic pressure, which, where I live, is usually around 4.7. So, I realized that last night when my car stuttered, stalled, and wouldn't start, my MAP sensor was messed-up! Right before the car died, after idling in park for about 5-10 seconds, the MAP sensor was reading 4.3 volts!! It should have been more like 1.0 volts!! So this was telling the ECM that I was accelerating HARD on the gas, and that's probably why my INTEGRATOR values were way too high, at 180, because the ECM was commandnig A LOT of fuel to be added... I know it's not my TPS(Throttle Position Sensor) because it was at the normal 0.5 volts, and 0% angle. What do you think??? Could this be right??? THANKS!) PS This is all going to be solved Monday morning, but I'd like to know ASAP! Quote Link to comment Share on other sites More sharing options...
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