No start no injector Pulse

Hi,

This is one of three things most likely. If you have pressure but no pulse width then it is either the Cam sensor, Crank sensor, or the ECM/VCM.

The control module is responsible for taking the cam and crank signal and sending the pulse width at the appropriate time. If it is not sending it, it may be because it is not getting the signal from the cam and/or crank.

I suspect the crank more than the cam because as you see in the description of the cam sensor, if it looses this signal it will just pulse both banks rather than the correct one injector and you are getting no pulse. However, if it does not get the crank signal then it will not pulse any of the injectors but this would also not send spark. So if it runs with starter fluid, you would assume the crank is okay as well.

This leaves the ECM/VCM that would prevent an injector pulse.

I don't want to tell you to just replace this with out performing a few tests to ensure you have each of these inputs but based on this info, that is the most likely cause.

Did you swap the knock sensor module over? Also, was the replacement VCM service number the same as the original? If not, that may be your issue.

Also, there is a programming procedure that needs to be done with a scan tool. This is to transfer over the EEPROM (programmable memory) data and then you run the Passlock procedure.

So if the injectors are firing and the plugs are firing, and it runs okay on starter fluid then it is just not getting fuel. I would think the regulator could be the issue. When you took the fuel pressure, was that before or after the regulator?