606 posts · Joined 2007. #1 · Oct 29, 2011. So, the Duralast crankshaft position sensor from AutoZone that I put in 6 months ago started failing. 2001 WJ 4.7L. I put in a BWD from Orielly and it wouldn't even start! (grrr.) Put in a new Duralast and all is well again, for now. I didn't want to pay the $72 the stealership wants for one. I drive a 2011 Jeep Grand Cherokee with the 3.6 V 6. My CEL came on. about 3 months ago with the code P0340 "Cam Shaft Position Sensor." I. replaced the right Cam Shaft Position Sensor and the light went off. Recently. my CEL came back on stating the same issue. I then changed out the left. Cam Shaft Position Sensor. 3. Engine Rough Idling, Engine stalling, or idles too slowly. You might wonder if a ‘bad throttle position sensor causes misfire’. If you notice engine misfire, stalling, or rough idling on parked or when you stopped, it could be a clear sign that your throttle position sensor is long gone. With a faulty throttle position sensor, the ECU doesn’t know how to time everything, and an engine code will be the result. Faulty Accelerator Pedal Position Sensor or Module. In addition to the throttle position sensor, the electronic throttle control consists of an accelerator pedal position sensor and an accelerator pedal module. The throttle position sensor (TPS) monitors the position of the throttle body butterfly valve. This allows your vehicle's computer to regulate the air intake and manage the fuel and air mixture. Throttle position sensors are often mounted to the throttle body itself, and may have a lever arm that moves as the throttle changes position. The P2122 code indicates that the powertrain control network (PCM) has detected an issue with the throttle position sensor (TPS), specifically that the sensor is running too low of a voltage. Most Changing out a TPS sensor to fix a weird shifting issue at 60mph and rough idle. LInk to Purchase on amazon - Service type Throttle Position Sensor (TPS) Replacement: Estimate $514.57: Shop/Dealer Price $624.47 - $931.65: 1992 Jeep Cherokee L6-4.0L: Service type Throttle Position Sensor (TPS) Replacement: Estimate $223.73: Shop/Dealer Price $265.93 - $370.00: 2000 Jeep Cherokee L4-2.5L: Service type Throttle Position Sensor (TPS) Replacement: Estimate Order Jeep Grand Cherokee Throttle Position Sensor Connector online today. Free Same Day Store Pickup. Check out free battery charging and engine diagnostic testing while you are in store. 2004 Columbia Edition WJ 4.7 HO. RB4/Moog HD Steering Stabilizer/ PML trans pan 10304 / Autometer trans temp & oil pressure gauge/UpCountry springs & OME 10MM Spacers/Bilstein shocks/Rubicon Moabs/255/65r17 Cooper Discoverer AT3/Factory chrome tow hooks/Kolak 3" exhaust & a loose nut behind the wheel. T. rxWde.