Engine/Transmission (1998.5 - 2002) Defueling

[Jerky]

What does the term defueling mean? Seems kind of confusing.

Thanks - Dean

 

[RustyJC]

The 24 valve engines are computer controlled - I won't get into the PCM (powertrain control module), the ECM (engine control module) or the intelligence built into the VP-44 fuel injection pump, but all have/are "computers".



If a computer sees too much turbocharger boost or engine RPM approaching redline, it signals the VP-44 fuel injection pump to reduce the amount of fuel it's delivering to keep the engine from damaging itself. That's "defueling".



Rusty

 

[CUMINNTSTRKN]

in racing applications it's when the motor reves up to quickly and the ecm pulls back fuel. you will get 3 surges while it defuels. it only does this in 1st gear.

bd-power has a box that elimates this.



jim

 

[StakeMan]

Torque managment is what Dodge calls it.