[186860]

hi guys! I have a 2004 wrangler tj with the 2.4L engine on it; during last 2or3 weeks of driving I have an intermittent problem...when I accelerete from low rpms my jeep seem to lose power, like a shuddering w an auto(mine is manual), I have already replaced the spark plugs and wires but nothing change; yesterday my MIL lighted on and never goes out, checked for codes and I notice a P0123. what it means? what can I check?

any help will be much apprecciate.

 

[GOLENJEEPTJ]

Throttle position sensor, voltage to high. Sounds like you need a new TPS

 

[186860]

new TPS.. is there any way to test it? this code is only related to TPS?

rob

 

[GOLENJEEPTJ]

OPERATION​

The TPS is a 3-wire variable resistor that provides
the Powertrain Control Module (PCM) with an input
signal (voltage) that represents the throttle blade
position of the throttle body. The sensor is connected
to the throttle blade shaft. As the position of the
throttle blade changes, the resistance (output voltage)
of the TPS changes.
The PCM supplies approximately 5 volts to the
TPS. The TPS output voltage (input signal to the
PCM) represents the throttle blade position. The
PCM receives an input signal voltage from the TPS.
This will vary in an approximate range of from .26
volts at minimum throttle opening (idle), to 4.49 volts
at wide open throttle. Along with inputs from other
sensors, the PCM uses the TPS input to determine
current engine operating conditions. In response to
engine operating conditions, the PCM will adjust fuel
injector pulse width and ignition timing.
The PCM needs to identify the actions and position
of the throttle blade at all times. This information is
needed to assist in performing the following calculations:​

²​

​

Ignition timing advance​

²​

​

Fuel injection pulse-width​

²​

​

Idle (learned value or minimum TPS)​

²​

​

Off-idle (0.06 volt)​

²​

​

Wide Open Throttle (WOT) open loop (2.608
volts above learned idle voltage)​

²​

​

Deceleration fuel lean out​

²​

​

Fuel cutoff during cranking at WOT (2.608 volts
above learned idle voltage)​

² A/C WOT cutoff (certain automatic transmissions

 

[GOLENJEEPTJ]

I would just replace it.

 

[GOLENJEEPTJ]

There about $35.00 bucks thru auto zone! I doubt they have auto zones in Italy but try your local parts store! Good luck and welcome to JF!