Problem with mass airflow

[primodts]

ok, heres' the problem, all of the sudden for no reason my car started running really horrible. it was spitting gas really bad and i couldnt' rev past around 3k. the CEL went on and i ran a test and found that it was throwing a p0100 code, which is mass airflow circuit malfunction. i have a maft and i checked all the wires and they were all good, and i put the stock intake and mas on and it didn't help any. i dont' know if this has anything to do with it, but when it started running bad i looked under the hood and there was a wire that was disconnected, it was a harness on top of the intake manifold facing front. i dont' know what the wire is but i think it may have something to do with the mas and i need to get the car running as soon as possible so any suggestions would help. theres' a picture of the plug below

 

[RoasT BeeF]

Map sensor, plug it back in. Reset the ECU. Do you have an SAFC? Check and make sure the sensor type is still set to Karman.

 

[primodts]

reset the ecu and set the safc to karman and it works fine, thanks

 

[98spydert]

That's not a MAP sensor, it's a MDP sensor and has absolutely nothing to do with the mass airflow sensor or airflow calculations. If that were unplugged, it should have thrown an EGR malfunction DTC.

When you put the stock sensor back on did the car still run crappy or did the CEL just stay on?

Do you have a logger? Is the ECU getting ANY sort of raw MAS signal?

 

[Defiant]

Never mind all that. GET A COVER ON THAT BATTERY TERMINAL NOW.
Or you won't have to worry about anything under that hood.

http://www.dsmtuners.com/forums/showthread.php?t=193490

 

[RoasT BeeF]

That's not a MAP sensor, it's a MDP sensor and has absolutely nothing to do with the mass airflow sensor or airflow calculations. If that were unplugged, it should have thrown an EGR malfunction DTC.

Oops you are right. It is a Manifold diferential pressure sensor. N/T's have the Map sensor in that location.

Either way still should be plugged in.