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Quadratec Map Sensor

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Our Jeep was incredibly rich at lower RPMs, wouldn’t rev past 3,000 RPM, and idled very poorly. Our voltage readings were all over the place at every measured value. So at higher engine speeds when manifold vacuum was low and more fuel was required, our MAP was still reading like the engine was at or just off-idle, starving the engine of fuel. A new MAP sensor from Quadratec (PN 55122.2001, $52.99) cured our problems.