Car runs poorly, code 126

[pendelton]

I got a 92' MTX and this thing is running like garbage, it will idle and stay idling at a good 1k RPMs, its just that i have a SERIOUS lack of power, when i go to step on the gas theres much hesitation aswell, i got a check engine and when i did a KOEO test it gave me a code 126(MAP/BARO sensor higher or lower than expected) I did however replace the MAP sensor and its still giving me this code. A few things i did to try to get it running a little better was unplugging the MAF and test driving, that did not change my performance, it still ran like crap. Then i unplugged the BARO sensor(the brand new one i just bought) and that did not help or hinder performance either. Im stuck now, i figured id see what u guys think b4 i take her to the garage. Thanks much

 

[pendelton]

oops

oops meant to post this in gen 1,2 help maintenance/troubleshooting.

 

[projectSHO89]

Service Code 22/126 indicates that the Manifold Absolute Pressure (MAP)/Barometric Pressure (BP) sensor is out of Self-Test range. Correct MAP/BP tester range of measurement is typically from 1.4 to 1.6 volts.

Possible causes:

-- MAP/BP SIG circuit open between sensor vehicle harness connector and processor.

-- MAP/BP SIG circuit shorted to VREF, SIG RTN, or GND.

-- Damaged MAP/BP sensor.

-- Vacuum trapped at MAP/BP sensor.

-- High atmospheric pressure.

-- Damaged processor.

-- VREF circuit open at MAP/BP sensor.

-- SIG RTN circuit open at MAP/BP sensor.

Steve