Engine code p0372

Jodesha, Should have scanned for diagnostic codes, have engine and transmission mounts checked. Check for vacuum leaks and or injectors could be a problem.
Check the attached links,instruction and guides on diagnosing rough running engine. Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

How to Fix Rough Engine Idle Problems at YouFixCars com

https://www.2carpros.com/articles/engine-misfires-or-runs-rough

The Lost Art of Diagnosing Engine Problems

Rough Running Engines Car Repair Information From MasterTechMark

What are the trouble codes set? Get them read for free at most auto parts stores.

Possible causes


- Timing Reference Optical Sensor harness is open or shorted

- Timing Reference Optical Sensor circuit poor electrical connection

- Faulty Timing Reference Optical Sensor

- Damaged Powertrain Control Module (PCM)


What does this mean?



When is the code detected?


Some high resolution pulses are missing from the optical sensor to the PCM


Possible symptoms


- Engine Light ON (or Service Engine Soon Warning Light)


P0372 Description



The optical sensor provides a high resolution signal to the Powertrain Control Module (PCM) by counting pulses on the sensor disk located in the injection pump. The high resolution is one of the most important inputs by the PCM for fuel control and timing. This test monitors the number of high resolution pulses which have been missed (not detected). It's based on a comparison between the number of pulses that were detected since the last pump cam pulse and the number of the pulses that should have occurred. There are approximately 64 high resolution pulses for every cam pulse.







Read more: http://engine-codes.com/p0372.html#ixzz3TGBdDBdF

Change coils,fuel filter and check the code.

what are the codes

Did you try disconnecting battery for 30 min to reset computer?

replace pulgs and wires

Hi,

The distributor ignition system supplies two timing inputs to the PCM, a high resolution signal (180 pulses per one crankshaft revolution) and a low resolution signal (4 pulses per one crankshaft revolution). The high resolution and low resolution circuits toggle between 0 and 5 volts as the camshaft turns. The PCM can determine if one of the timing inputs is not being received by comparing the two inputs.
The following malfunctions to the high resolution circuit will cause a DTC P0372 to set:
• An open. • A short to voltage. • A short to ground. • A defective ignition module within the distributor. Conditions for Setting the DTC • The PCM detects low resolution pulses but no high resolution pulses. Action Taken When the DTC Sets • The PCM will illuminate the Malfunction Indicator Lamp (MIL) when the diagnostic runs and fails. • The PCM will record operating conditions at the time the diagnostic fails. This information will be stored in the Freeze Frame and/or Failure Records. • The injector will be disabled for the entire ignition cycle. Conditions for Clearing the MIL/DTC • The PCM will turn the MIL OFF after three consecutive drive trips that the diagnostic runs and does not fail. • A last test failed (Current DTC) will clear when the diagnostic runs and does not fail. • A History DTC will clear after forty consecutive warm-up cycles, if no failures are reported by this or any other emission related diagnostic. • PCM battery voltage is interrupted. • Using a Scan tool. Diagnostic Aids • If DTC P1351 and/or DTC P1361 is also set with a DTC P0372, and no external fault can be found, replace the PCM. If only DTC P0372 is set and the distributor connections are OK, replace the distributor. • If distributor components must be replaced, check distributor vent system operation.
Let me know,if needed further assistance.

Hope i helped you.

Thanks for using ' Fixya ' and have a nice day!!

Hi, these codes relate to the crankshaft position sensor. Recommend you check the sensor to make sure it is tight and the connector is fully on. If it looks in order, consider replacing the sensor. If you reply with your model and year, I will see if I can provide additional information.

P0335 Crankshaft position (CKP) sensor - circuit malfunction
Possible causes: Wiring, CKP sensor, ECM

P0372 Timing reference, high resolution signal A - too few pulses
Possible causes: Wiring, CKP/RPM/CMP sensor, ECM

Check and see if the EGR valve is leaking, to check this spray water on it at idle, if the water steams off the valve is leaking and is the source of your problem, also are you sure you hooked the new DPFE sensor up right? re-check it..