Operation CHARM: Car repair manuals for everyone.
Home >> Ford >> 1995 >> E 250 Van V8-7.3L DSL Turbo VIN F >> Repair and Diagnosis >> Powertrain Management >> Computers and Control Systems >> Testing and Inspection >> Component Tests and General Diagnostics >> Performance Diagnostic Procedures >> Injection Control Pressure (ICP) Tests
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Injection Control Pressure (ICP) Tests





TEST A. - Oil Aeration

PURPOSE
To determine if the engine lube oil is aerated and causing poor idle quality.






RECOMMENDED PROCEDURE
Install New Generation Scan (NGS) Scan Tool. Access ICPA Parameter Identification (PID) on Scan Tool and monitor Injection Control Pressure (ICP). Operate the engine at wide open throttle for 60 seconds.

POSSIBLE CAUSES
- Extended oil drain intervals. The anti-foam additives in the oil may be depleted either from severe use or extended intervals, This test should be performed with engine at normal operating temperature.
- Wrong type or grade of oil

TOOLS REQUIRED
Rotunda New Generation Star (NGS) Scan Tool 007-00500






TEST B. - Low Idle Stability (ICP Pressure)

PURPOSE
To determine if idle stability and/or low power is caused by a stuck or dirty Injection Pressure Regulator (IPR) or bad ICP signal.






RECOMMENDED PROCEDURE
Install NGS scan tool. Access ICPA PID on scan tool and monitor ICP pressure. Operate the engine at low idle (650 rpm). If engine does not stabilize, disconnect the ICP sensor. If low idle speed stabilizes with the ICP sensor disconnected the problem is most likely in the ICP sensor circuit. X - Injection Pressure Regulator (IPR)

If RPM does not stabilize, change the IPR valve and retest. This test should be performed with engine at normal operating temperature.

POSSIBLE CAUSES
- Debris stuck in the IPR valve
- In-range ICP sensor or circuit failure.

TOOLS REQUIRED
Rotunda New Generation Star (NGS) Scan Tool OO7-OO5OO
pro multis · About Operation CHARM