Code p0336, Now all I get is puffing sound when cranking but start?

The return or ground is the ECM. If you had the black lead in the connector and read the voltage you posted, then it is good.

Roy

Apologies Roy my multimeter wasn't reading properly.. I'm getting-0.06.

What wire?

Roy

The signal wire.

Red lead on C.

Sorry that was on both.

(Battery) Positive red to pin 22 7v.

Okay, I am confused.

Can you retest the voltage as I suggested?

Do you have 12 volts to the connector on terminal C or the light green wire?

Also, put your voltmeter leads in the connector. Red lead to C and black lead to B or the yellow-black. Tell me the voltage. It should be battery voltage with the key on.

Roy

The-0.06 is being displayed with red connected to C and black connected to B.. if I remove red and touch positive terminal I get 7v@ B yet C remains the same when touching -terminal.
Is this being done without ecm being connected?....

Why? You must have the ECM connected. That is where the power comes from.

Roy

Just trying to be 100% clear so that I will be able to follow all steps.

The ECM must be hooked with the key on for these tests.

Please retest?

Roy

It was tested with ECM connected and key on.

The readings you previously posted were with it disconnected according to you.

Please clarify.

Roy

I did not state that I was clarifying that you weren't requesting it to be unplugged to gain access to the connector hence "is this to be done without ECM connected".

As I stated earlier, the ECM must be hooked up and the key in the on position.

Roy

I also stated that I performed the test that way....so we have 0.06 @ C.. what's next?

What is the voltage on A and C with the ECM hooked up and the key on?

C is the return to the ECM.

Roy

With red in C and black in A 14v.

Black lead to C and red lead to B and read the voltage.

Roy

-0.11.

B is missing voltage. We posted the diagram a ways back for the sensor and the wires that go to the ECM. You need to go to the ECM connector and verify no voltage on the wire. If there is not, the ECM is the issue. If there is voltage, the wire is bad.

Roy

Recently just changed the ECU. I will update next weekend when I restart working on it.

Sounds like a plan.

Roy

Hello again.

We haven't heard from you in a few weeks? Has any progress been made on your truck? Last we heard you were going to replace the ECU. Please keep us updated and let us know what we can do to help. Thanks again for using 2CarPros.

Danny-

Nothing.

Keep us updated when you can.

Roy

Hello again.

Has anything came of this? We are curious to know of any progress made or let us know if you need any further assistance. We are still here to help. Thanks again for using 2CarPros.

Danny-