(black, light blue?)Ģ- output color DG/RD (darkgreen-red) bingo, sensor output. all run off 5vdc power.ġ blk /Lb is ground from PCM. The PCM to creates 5v, for the 4 external sensors.
With 2 sensors this engine measure AIR flow through the system. In simple terms it measures plenum vacuum and the PCM injectsīased on that and on IAT plenum air temperatures. The fsm shows the MAP readings and vacuum and voltage outputĬhart, the MAP is BARO SENSOR, CALLED A 1 BAR BARO. (manifold air pressure or BARO) top front of intake plenum man. My guess is you are working FSM free? none.? Why not post the symptoms, so we can REALLY HELP YOU. This will create poor connections on the board and cause a loss of power and drop to idle.You can either replace the pump (also very expensive) or if you are mechanically inclined, you can source a brain and solenoid assembly and replace it on the pump. This is usually corrected by shutting the truck off and re-starting it.This indicates a brain failure on the VP44 injection pump.The solder joints become crystallised on the circuit board from excessive heat cycles. when the problem happens, you will be able to retrieve the codes and will probably find TPS circuit failure codes.The TPS (or APPS) has a flat spot and at the magic position, will drop the engine to an idle.A couple of full throttle applications on the pedal will usually cure the porblem for the moment.Replace the sensor assembly (very expensive).The other mode is a similar drop to idle but without a C.E.L. Harry,there are two failure modes for your problem. SOURCE: I have a 98 dodge 24 valve cummins.
0 kommentar(er)
