|Descripción:||Esta es una Guia tecnica del Sistema de alta Presion de Aceite para su correcto Diagnostico de los Motores PowerStroke 7. 3L(Ingles)|
|Resumen (Extraido del documento):||
Technician High Pressure Pump Guide for the 7.3 Power Stroke Engine
HIGH PRESSURE PUMP
. PUMP LEAKS . ICP SYSTEM DIAGNOSTICS . REPAIR PARTS . TOOLS
TEST TOOLS AND ICP
PUMP LEAK REPAIR
High pressure pumps with oil leaks at the fittings for the high pressure lines and the plug at the rear (see photo #1) can be repaired in the field using the following Ford part number 2C3Z-9G804-AA kit per TSB 03-17-01. This kit contains 3 o-rings, sealant, and instructions on how to clean and seal the fittings. Torque specs. for the fittings are also included. Outlet Fittings Plug
Note: Threads must be cleaned, sealant applied to the first 3 threads and the fittings and plug tightened to proper specs.
High Pressure In
The IPR acts to increase ICP by restricting the path to drain.
High Pressure In
With max IPR% the ICP should be at its highest value.
The PCM attempts to increase ICP by raising the IPR%. KOEO Crank to Start Idle Full Load No Start (Max Command) 14% Less than 30% typically with no leaks and engine starts 8 - 16% @ operating temperature Less than 50% with no ICP system leaks 54% for 94 to 97 MY 65% for 98 MY or newer
Note: As a general rule 7.3 Power stroke engines require 500 psi ICP (1.0 volts ICPv) minimum to start.
1.) ICP SYSTEM DIAGNOSTICS
P1211 sets if ICP is 410 psi above or 280 psi below the desired pressure for 7.5 seconds. P1212 sets if 725 psi of ICP is not detected in 6 to 15 seconds of cranking. P1280 code is for ICP circuit low (often open circuits). Typical issues include, corrosion, spread pins, or improperly crimped terminals at the ICP sensor harness connector. If a P1280 is set, the PCM will display a default value of 725psi at idle. To verify open circuit concern use ICPv. ICP KOEO signal voltage should be between .16 to .28 volts.
2.) NO START DIAGNOSTICS
IPR% goes high with no or low ICP. - A leak exists in the ICP system