P0101 IS THERE PROBLEMS WITH THE map SENSOR PORT GETTING PLUGGED?

Improper MAP sensor data can produce a myriad of poor performance issues but manifold leaks may also cause similar symptoms.

Try disconnecting the MAP sensor and test drive. The PCM/ECU will use default air fuel ratios and shift points. If the severe shifting goes away then likely problems are from improper MAP sensor data.

The question then becomes is the sensor bad or are there intake manifold leaks causing bad readings. Could also be wiring issues or reference signals and/or PCM/ECU issues.

DTC P0101
Circuit Description
The mass air flow (MAF) sensor is an air flow meter that measures the amount of air entering the engine. The powertrain control module (PCM) uses the MAF sensor signal to provide the correct fuel delivery for all engine speeds and loads. A small quantity of air entering the engine indicates a deceleration or idle condition. A large quantity of air entering the engine indicates an acceleration or high load condition. The MAF sensor has the following circuits:
• An ignition 1 voltage circuit
• A ground circuit
• A signal circuit
The PCM applies a voltage to the sensor on the signal circuit. The sensor uses the voltage to produce a frequency based on the inlet air flow through the sensor bore. The frequency varies within a range of near 2,000 Hertz at idle to near 10,000 Hertz at maximum engine load. The PCM uses the following sensor inputs to calculate a predicted MAF value:
• The barometric pressure (BARO) at key ON
• The manifold absolute pressure (MAP) sensor
• The intake air temperature (IAT) sensor
• The engine coolant temperature (ECT) sensor
• The throttle position (TP) sensor
• The engine speed (RPM)
The PCM compares the actual MAF sensor frequency signal to the predicted MAF value. This comparison will determine if the signal is stuck based on a lack of variation, or is too low or too high for a given operating condition. If the PCM detects the actual MAF sensor frequency signal is not within a predetermined range of the calculated MAF value DTC P0101 sets.

Important:: The Altitude vs. Barometric Pressure table indicates a pressure range for a given altitude under normal weather conditions. Weather conditions consisting of very low or very high pressure and/or temperature may cause a reading to be slightly out of range.
Turn ON the ignition, with the engine OFF.
Observe the MAP Sensor kPa parameter with a scan tool.
The manifold absolute pressure (MAP) sensor pressure should be within the specified range for your altitude. Refer to Altitude Versus Barometric Pressure .
Is the MAP sensor pressure within the specified range as indicated on the Altitude vs Barometric Pressure table?

P0101
Mass or Volume Air Flow Circuit Range/Performance Problem
P0102
Mass or Volume Air Flow Circuit Low Input
P0135
O2 Sensor Heater Circuit Malfunction Bank 1 Sensor 1

Your O2 sensor needs replacing...do this then disconnect negative battery ground, wait 10 minutes and reconnect. If all cleared, use a scan tool and clear properly, these are relatively cheap or take it to a shop.

P0101 is the MAF (mass air flow) sensor that measure the amount of air entering the engine. Not enough air means rich running and a possible cause of fuel smell. Apart from running a little rougher there aren't always many signs that something is wrong.
P0107 is the MAP (manifold absolute pressure) sensor and responds to changes in manifold inlet pressure (vacuum). Problems cause include hard to start, long cranking times, sputtering/missing, blowing black smoke, poor fuel economy.

The belt tensioner is defective. It automatically keeps the belt at the proper tension. P0101 - MAF sensor (mass air flow sensor) or circuit problem. P0107 - MAP sensor (manifold absolute pressure sensor) signal is low.

the map sensor could be the problem for code P0101
hope it helps

The simplest thing to do is to reset the code and see if it comes back. Any loss of vacuum to the MAP sensor can cause this DTC to set. A number of problems can cause this code, for example, a bad mass air flow sensor, a vacuum leak, a leak in the air duct between the air flow sensor and the engine, a sensor wiring problem, etc. Even a plugged catalytic converter can cause this code. good-day !

P0101 - Mass Air Flow (MAF) Circuit Range/Performance Problem

Basically this means that there is a problem with the Mass Air Flow (MAF) sensor or circuit. The PCM detects that the actual MAF sensor frequency signal is not within a predetermined range of the calculated MAF value for more than 4.0 seconds. Other MAF sensor circuit DTC trouble codes are P0100, P0102, P0103, and P0104.

Symptoms: You will likely not notice any serious drivability problems, although there may be symptoms.

Possible Solutions:
The simplest thing to do is to reset the code and see if it comes back. Then start with the cheapest, easiest repair procedures:
* Inspect for the following conditions:
An incorrectly routed harness--Inspect the harness of the MAF sensor in order to verify that it is not routed too close to the following components:
- The secondary ignition wires or coils
- Any solenoids
- Any relays
- Any motors
* A low minimum air rate through the sensor bore may cause this DTC to set at idle or during deceleration. Inspect for any vacuum leaks downstream of the MAF sensor.
* A wide open throttle (WOT) acceleration from a stop should cause the MAF sensor g/s display on the scan tool to increase rapidly. This increase should be from 6-12 g/s at idle to 230 g/s or more at the time of the 1-2 shift. If the increase is not observed, inspect for a restriction in the induction system or the exhaust system.
* The barometric pressure (BARO) that is used in order to calculate the predicted MAF value is initially based on the MAP sensor at key ON.
* When the engine is running the MAP sensor value is continually updated near WOT. A skewed MAP sensor will cause the calculated MAF value to be inaccurate. The value shown for the MAP sensor display varies with the altitude. With the ignition ON and the engine OFF, 103 kPa is the approximate value near sea level. This value will decrease by approximately 3 kPa for every 305 meters (1,000 feet) of altitude.
* A high resistance on the ground circuit of the MAP sensor can cause this DTC to set.
* Any loss of vacuum to the MAP sensor can cause this DTC to set.

Hope this helps (remember rated this).

P0101 is a mass air flow sensor code check and make sure it did not get unplugged its located by the air filter .

The MAP sensor (MANIFOLD ABSOLUTE PRESSURE) changes voltage or frequency as intake manifold pressure changes (air flow increases or decreases). The engine's computer uses the reading to advance or ****** engine timing. On older, non-fuel injected engines the vacuum advance on the distributor did basically the same thing.
The MAP sensor also works with other sensors on the Jeep engine, specifically the Throttle Position Sensor (on the throttle body) and Crank Position Sensor (on the transmission bell housing) to control other fuel flow and ignition timing functions.
If you're having problems with the MAP sensor, or are getting a Check Engine light and code for the MAP sensor keep in mind that other problems may cause that error code.
Bad vacuum hoses, vacuum leaks, bad EGR valves, intake manifold leaks, clogged air filter can all affect the MAP. sensor. To know for sure all the other sensors should be checked for correct voltage and perimeters
Also, if you have done any mods to the engine, especially intake, exhaust and ignition mods you may get an error code for the MAP or incorrect reading and a resulting loss in power or increased fuel usage.
The map sensor is easy to change with a couple screws off the Throttle body.. The part the air inters (the air breather). Buy one from the auto parts store if your sure that is the problem and just replace it..There is no adjustments to it...

It really sounds to me that you have a small vacuum leak in a line somewhere.You can try spraying the motor vacuum lines with soapy water with the vehicle running to find a leak. Also listen and feel under the dash for leaks and hissing sounds.
Hope this helps.......