bad stutter at 2000 rpm, only power key on

[Spanky1965]

well my thought was if you can remove the system why cant you run with it grounded open???

Originally Posted by Spanky1965

well my thought was if you can remove the system why cant you run with it grounded open???

It will signal a fault code. And what are you going to be doing for extra fuel, when the secondaries are not running?

[Dynomite]

Originally Posted by Jeffvette

It will signal a fault code. And what are you going to be doing for extra fuel, when the secondaries are not running?

You are talking secondary injectors? And they normally kick in when the secondary opens?

So if you grounded "open" the secondary butterfly, you will not get fuel untill the secondary would normally open at which time the secondary injectors would receive a signal to provide fuel also? I am assuming then grounding the secondary has nothing to do with the secondary injectors.

Originally Posted by Dynomite

You are talking secondary injectors? And they normally kick in when the secondary opens?

So if you grounded "open" the secondary butterfly, you will not get fuel untill the secondary would normally open at which time the secondary injectors would receive a signal to provide fuel also? I am assuming then grounding the secondary has nothing to do with the secondary injectors.

Or are you saying by grounding the secondary, you are not only opening the secondary but disconnecting the signal input to the secondary injectors?

When you are grounding C17, you are only taking care of the solenoid. The ECM controls the fuel pump and injectors as well.

So if you take one component and you are constantly grounding it, you will set a code.


Basically the ECM sees the demand for secondary operation. It then sends a signal to the solenoid, and the fuel pump and the injectors. For everything to function.