No start with out pumping the pedal and will not idle. 2.7l engine?
Idle Speed Control or vacuum leak would be my first thoughts.
Check to see if there are any trouble codes stored.
Dodge Code P150D – Cold Start Rough Idle – Open Throttle Start
When Monitored:
Any time the engine is running and the adaptive numerator has been successfully updated.
Set Condition:
If the PCM detects that the variation in crankshaft speed between each cylinder exceeds a calibrated value, based on engine rpm and load, a fault is set.
P150D Possible Causes
- Fuel Delivery System
- ECT Sensor, Wiring or connectors
- MAP Sensor, Wiring or connectors
- O2 Sensor, Wiring or connectors
- Engine Mechanical System
- PCM – Powertrain Control Module
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
Diagnostic Test
DTC IS ACTIVE
Diagnose and repair any other active component or circuit DTCs before continuing with this procedure.
Turn the ignition on.
With the scan tool, select View DTCs. Copy DTC and Freeze Frame information.
Start the engine and allow it to reach operating temperature.
WARNING
When the engine is operating, do not stand in direct line with the fan. Do not put your hands near the pulleys, belts, or fan. Do not wear loose clothing. Failure to follow these instructions can result in personal injury or death.
NOTE
Attempt to operate the vehicle under conditions similar to which the DTC was set.
NOTE
It may be necessary to test drive the vehicle within the DTC monitoring conditions in order for this DTC to set.
With a scan tool, select View DTCs.
Is the status Active for this DTC?
Yes
Go To >>>
No
Refer to the CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure. (Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
Refer To List:
DIAGNOSTIC INSPECTION
NOTE
Anything that affects the speed of the crankshaft can cause this DTC to set. When a misfire is detected, the PCM will shut down the injector control circuit for the misfiring cylinder. Misfire may occur and may not be caused by component failure. Any of the following conditions can cause a misfire.
Inspect the engine for any of the following conditions:
- Worn serpentine belt
- Misalignment or binding water pump, P/S pump or A/C compressor pulleys
- Improper CKP, CMP, or MAP Sensor mounting.
- Poor connector/terminal to component connection for CKP sensor, CMP sensor, MAP sensor, throttle body, fuel injector, ignition coil, etc.
- Corroded PCM power or ground circuits.
- Vacuum leaks.
- Restriction in the air induction or exhaust system.
- Internal engine component malfunction.
- Moisture on ignition system components
- Insufficient fuel
- Low quality fuel
- Manual transmission bog
- Towing overload
Were any problems found?
Yes
Repair as necessary.
Perform the PCM Verification Test. (Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
No
Go To >>>
Refer To List:
CHECKING THE FUEL DELIVERY SYSTEM
Perform the diagnostic procedure for CHECKING THE FUEL DELIVERY SYSTEM. (Refer to Non-DTC Diagnostics/Drivability – Gas – Diagnosis and Testing).
Were any problems found?
Yes
Repair as necessary in accordance with the Service Information.
Perform the PCM Verification Test. (Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
No
Go To >>>
Refer To List:
CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION
Perform the diagnostic procedure for CHECKING THE ENGINE COOLANT TEMPERATURE SENSOR OPERATION. (Refer to Non-DTC Diagnostics/Drivability – Gas – Diagnosis and Testing).
Were any problems found?
Yes
Repair as necessary in accordance with the Service Information.
Perform the PCM Verification Test. (Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
No
Go To >>>
Refer To List:
CHECKING THE MAP SENSOR OPERATION
Perform the diagnostic procedure for CHECKING THE MAP SENSOR OPERATION. (Refer to Non-DTC Diagnostics/Drivability – Gas – Diagnosis and Testing).
Were any problems found?
Yes
Repair as necessary in accordance with the Service Information.
Perform the PCM Verification Test. (Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
No
Go To >>>
Refer To List:
CHECKING THE OXYGEN SENSOR OPERATION
Perform the diagnostic procedure for CHECKING THE OXYGEN SENSOR OPERATION. (Refer to Non-DTC Diagnostics/Drivability – Gas – Diagnosis and Testing).
Were any problems found?
Yes
Repair as necessary in accordance with the Service Information.
Perform the PCM Verification Test. (Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
No
Go To >>>
Refer To List:
CHECKING THE ENGINE MECHANICAL SYSTEM
Perform the diagnostic procedure for CHECKING THE ENGINE MECHANICAL SYSTEM. (Refer to Non-DTC Diagnostics/Drivability – Gas – Diagnosis and Testing).
Were any problems found?
Yes
Repair as necessary in accordance with the Service Information.
Perform the PCM Verification Test.(Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
No
Go To >>>
Refer To List:
POWERTRAIN CONTROL MODULE (PCM)
Using the wiring diagram/schematic as a guide, inspect the wiring and connectors relative to the components tested in this procedure.
Look for any chafed, pierced, pinched, or partially broken wires.
Then Look for broken, bent, pushed out or corroded terminals.
Monitor the scan tool data relative to the components tested in this procedure and wiggle test the wiring and connectors.
Look for the data to change or for a DTC to set during the wiggle test.
Refer to any Technical Service Bulletins that may apply.
Were any problems found?
Yes
Repair as necessary.
Perform the PCM Verification Test. (Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
No
Replace and program the PCM in accordance with the Service Information.
Perform the PCM Verification Test. (Refer to DTC-Based Diagnostics/MODULE, Powertrain Control (PCM) – Standard Procedure)(Refer To List 1).
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