04 Jeep liberty limited just wouldn't start one day. diagnosed it change the idler air control sensor, TPS, Camp Shaft sensor, Crank Shaft sensor, starter, and brand new battery but it still wont start and battery got drained just by trying to start it??? help

Did you remove the air hose tube and possibly disconnect the air intake sensor and not plug it back in?

Replace Jeep liberty CKP and CSP position sensor - YouTube

? 6:59
https://www.youtube.com/watch?v=rZIIJo6OHNM
Jul 16, 2014 - Uploaded by Daniel Richards
Detailed how to video on replacing your camshaft and crankshaftposition sensor on a 2006 Jeep Liberty 3 ...

2003 Jeep Liberty 3.7L Crankshaft Position Sensor - YouTube

? 5:35
https://www.youtube.com/watch?v=v_cV13GFDvk
Jan 11, 2012 - Uploaded by DeathScouter
2003 Jeep Liberty 3.7L Crankshaft Position Sensor .... There is ONE camshaft positioning sensor, and ONE ...

Could be problem with cam shaft sensors and crank shaft sensor.

Hi, First replace your plugs. Second check ignition coil(s) one maybe bad. replace with new. If all else is good, have your mechanic check the computer codes. (code scanner) Many of todays cars and trucks have computers to run and control the engine. (management system). Good luck

I have an 04 liberty limited 4x4 ... I was told there's a recall on the air bag to be fixed at dealerfor free after Jan. 2013 ... Good Luck !!!

The 3 wire Throttle Position Sensor (TPS) is mounted on the throttle body and is connected to the throttle blade.
The TPS is a 3wire 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:

• Components & Systems
• • Auto Shut Down Relay
  • Camshaft Position Sensor
  • Components & Systems
  • Crankcase Ventilation System
  • Crankshaft Position Sensor
  • Evaporative Emission Control System
  • Heated Oxygen Sensor
  • Idle Air Control Motor
  • Intake Air Temperature Sensor
  • Intermittent Fault Tests
  • Knock Sensor
  • Manifold Absolute Pressure Sensor
  • Positive Crankcase Ventilation System
  • Throttle Position Sensor
  • Transmission Range Sensor Solenoid Assembly
  • Vehicle Speed Control

• HOME
• REPAIR INFO
• 2001 JEEP GRAND CHEROKEE 4WD 4.0L MFI 6CYL REPAIR GUIDE
• ENGINE PERFORMANCE & EMISSION CONTROLS
• COMPONENTS & SYSTEMS
• THROTTLE POSITION SENSOR

Cherokee, Grand Cherokee, 1999-2005
Throttle Position Sensor

• OPERATION
• REMOVAL & INSTALLATION

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Operation

The 3 wire Throttle Position Sensor (TPS) is mounted on the throttle body and is connected to the throttle blade.
The TPS is a 3wire 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:


Ignition timing advance Fuel injection pulse-width Idle (learned value or minimum TPS) Off-idle (0.06 volt) Wide Open Throttle (WOT) open loop (2.608 volts above learned idle voltage) Deceleration fuel lean out Fuel cutoff during cranking at WOT (2.608 volts above learned idle voltage) A/C WOT cutoff (certain automatic transmissions only)

Removal & Installation

3.7L & 4.0L

1. Disconnect TPS electrical connector.
2. Remove TPS mounting screws.
3. Remove TPS.

To Install:
The TPS is mounted to the throttle body. The throttle shaft end of throttle body slides into a socket in the TPS. The TPS must be installed so that it can be rotated a few degrees. (If sensor will not rotate, install sensor with throttle shaft on other side of socket tangs). The TPS will be under slight tension when rotated.

1. Install TPS and retaining screws.
2. Tighten screws to 7 Nm (60 inch lbs.) torque.
3. Connect TPS electrical connector to TPS.
4. Manually operate throttle (by hand) to check for any TPS binding before starting engine.

4.7L

1. Remove air duct and air resonator box at throttle body.
2. Disconnect TPS electrical connector.
3. Remove two TPS mounting bolts (screws).
4. Remove TPS from throttle body.

To Install:
The throttle shaft end of throttle body slides into a socket in TPS. The TPS must be installed so that it can be rotated a few degrees. If sensor will not rotate, install sensor with throttle shaft on other side of socket tangs. The TPS will be under slight tension when rotated.

1. Install TPS and two retaining bolts.
2. Tighten bolts to 7 Nm (60 inch lbs.) torque.
3. Manually operate throttle control lever by hand to check for any binding of TPS.
4. Connect TPS electrical connector to TPS.
5. Install air duct/air box to throttle body.

Hope this helps

have you checked the crank position sensor? when this baby goes the engine will start and run for one or two seconds then die like its out of gas.

Also the ignition switch may be suspect.

I could be the CKP (crank sensor), but it could also be several other factors including the TPS. The correct way to start a diagnosis would be to see if any trouble codes are stored in memory. I'm assuming all basic ignition components are ok ; spark plugs, etc.

Has anyone made this work yet? I have the same problem 2002 jeep 3.7 and just installed a 04 motor. Timing is off. Some one had a good idea of mounting the crank gear to the out side of the harmonic ballancer and mounting the sensor with a bracket. What about the cam gear on the left side. Does the timing cahain have to come off to remove it? Or has any one swaped the wiring harnest, and computer.
Please email me back. [email protected] Thanks for your help.

Here are some things that I have run into. First any sensor cam/crank/tps etc..) that has a reference voltage from the pcm can cause this issue these sensors,(ESPECIALLY THE CRANK SENSORS or CAM Sensor) CAN SHORT OUT INTERNALLY. THIS WILL CAUSE A NO START CONDITION AND A "NO COMMUNICATION" ISSUE WITH THE PCM causing stalling. here are some things that I have run into. This condition has caused numerous unneeded pcm replacements. It gets difficult to diagnose when its an intermittent problem.sometimes a tech will install the pcm and let the jeep leave. Then when temp is right, the sensor shorts and it all happens again. Often by the time the jeep shows up on the hook the engine has cooled and the short is gone. In this case the tech has nothing to go on. YOU MOST LIKELY WONT HAVE A CODE HERE. THIS IS HOW I DIAGNOSE THE ISSUE. WHEN THE CONDITION IS PRESENT (NO COMMUNICATION") with THE KEY ON, START DISCONNECTING EACH SENSOR THAT HAS A REFERENCE VOLTAGE. START WITH THE CRANK SENSOR. IF YOU SEE THE SCANNER GET COMMUNICATION, THEN YOU FOUND THE SHORTED SENSOR.this CAN BE A PAIN IN THE @** IF THE CONDITION IS INTERMITTENT.
PLEASE NOTE: IT IS EXTREMELY RARE THAT THE PCM ITSELF HAS CAUSED THIS CONDITION. 99% OF THE TIME ITS A SENSOR SHORTING OUT, WIPING OUT ALL COMMUNICATION. ALSO NOTE:I HAVE NEVER SEEN THIS CONDITION ACTUALLY DAMAGE THE PCM. ONCE THE SHORTED SENSOR IS REPLACED, THE PCM IS FINE. THERE IS A RESISTOR IN THE PCM THAT PROTECTS IT FROM THIS. Good Luck and I Hope this will help resolve your issue. Please Rate Me. For any further assistance you can always ask me