I have a Nissan hardbody 3.0 zd 30 engine that has no power gives me trouble code 72. Engine speed reference signal improbable . I have change the diesel pump and crank pic up sensor but still the same can somebody help

Step 1-22 ft lbs on all bolts in a crisscross pattern
step 2-59 ft lbs in the exact same crisscross pattern
step 3-Loosen all bolts
step 4-22 ft Lbs
Step 5-46-50.5 ft lbs

Hummm... HERE is a interesting document (somewhat hidden) for you:

http://www.cardiagnostics.be/-now/Nissan%20Motor%20Co%20Consult_bestanden/ZD30%20Y61%20Reference%20Document%20-%20BW.pdf

And THESE GUYS really know their stuff! ASK HERE:

Search Results for po697

and

Thread ZD 30 Fault Codes and how to read hem

Anthony

What make and model please.

Does the scan tool light up, but doesn't connect. It could be wiring or the ECU. If the scan tool doesn't light up, check fuses. Most DLC connectors are power by the lighter /power point fuse.

I try not to guess when I'm on here trying to help people, but here goes... You might want to try disconnecting the negative cable from the battery for a couple of minutes, then reconnect it. This will cause the on-board computer to re-boot. It may recognize the new parts then. Again, I'm sorry, but I'm just taking an educated guess. Good luck! Hope it works. Bill

engine speed sensor could be faulty.engine speed sensor provides the ECM with a crankshaft position signal.the ECM uses the signal to determine a crankshaft reference point top dead center and calculate engine speed. engine speed sensor like the crankshaft position sensor.if sensor faulty fuel system wont work. a bad engine coolant temperature sensor will cause engine shut off when hot.

how do i change a diesel pump on a sprinter bus

P0725 NISSAN - Engine Speed Signal

The P0725 Codes is triggered when TCM does not receive the engine speed signal from ECM.

The Engine Control Module (ECM) monitors the engine speed through the Crankshaft Position (CKP) sensor with the engine running, and send signal to the Transmission Control Module (TCM).

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

Possible causes:
- Open or shorted CKP sensor circuit condition
- Poor CKP sensor electrical connection
- Check communication error between the ECM and TCM
- Failed CKP Sensor

Possible solution:
Very common problem with Nissan vehicles, usually replacing the Crankshaft Position sensor takes care of the problem.

Keep us updated.

Need to know what the stored trouble codes are. Most Autozone or Advanced Auto Parts stores will scan vehicle for free & give you the stored trouble codes. Once you get them post it here & we will help you locate the problem.

Yes.. the 2.4 liter configuration will work as the same power plant is in both models. The issue will be the transmission mounting surface on the 4x4 vs the 2x4. You need to insure that the main seal area has same pattern and bolt pattern. YOu will also need to be conscious that the motor you are getting the 2x4 has been broken in on 2 wheel drive and a 4 wheel puts more torque and strain on engine.... so be sure once placed you give a good slow break in process or you could crack the block or crank shaft