C15 Acert Vibration

A truck would throw a multitude of codes if u had an injector bad. A harness bad would throw a code too and if it didn't you would notice it before this hard pull.
What is happening is your acert ecm is derating on the hard pull. I'm willing.to bet ur shake is like the Jake's are on. If u listen really close at say 1500 rpm you'll hear what sounds like the Jake being engaged on a setting lower than the lowest. What's happening is ur ecm is telling the injetors on cylinders 1/3/6 or whatever order to limit fuel. Then it tells ur Jake valves to open very partially. This leads to a heavy stutter there is no way in hell this would happen without this being the case. An injector bad wouldn't activate the ####ing Jake. U get the shake because u have say cylinders 2/4/6 running at say 425 horsepower and cylinder 1/3/5 runnimg 225. Download a non cat tune and run. I guarantee if u back off throttle and gain speed it will fix. The c15 is a dirty motor and cat tried to clean it up with tuning and twins opposed to def. FYI my 6nz does the same. As for injector harnesses going bad. The ecm is throwing the wrong voltage. Reflash and install new if that doesn't fix new ecm time. . And that would cause a stutter more than what the main post is discribing. And an extreme mechanical issue.

 

95% of injectors I have replaced on a Cat never threw a code.

 

You just read my mind.!
Very rarely does the seliniod fail. It is usually something on the mechanical side of injector. There fore no code.

 

If u have right diagnostic software you'll see it. Therefore no engine code but incorrect fuel delivery

 

Cat ETS will show a bad injetor

 

Ur junk ### orielly Saturday special reader wont

 

Anyone who has a #### 10000 motor and throws ######## parts at it is an idiot. Todays vehicles have ecm code for operation that reads each other. These codes could be out of parameters and not throw a diagnostic code. Becusse these are the seperate entities. Throwing a code in this sense is an out of ratio situation the ecm cannot compensate for because cat didn't program it well enough to the that.

 

Do yourself a favor and ditch mutli use diagnostic tools and buy the correct one for ur make

 

Why are you replying to your own quotes. Maybe detune the caffeine there bud. Take er down a notch.

 

My genius mind doesn't slow down