Line Pressure Diagnostic Chart
WARNING: This page is about a different car, the 2005 Ford RV Cutaway, 2005 Ford Econoline, 2005 Ford E450 Super Duty, and 2005 Ford Cutaway. However, it is still accessible from the selected car via links, so may be relevant.
LINE PRESSURE DIAGNOSTIC CHART
| Test Results |
Possible Source |
| High line pressure at idle all ranges |
- Wiring harness (external or internal).
- PC A solenoid.
- Main regulator valve in pump stuck.
|
| Low line pressure at idle all ranges |
- PC A solenoid concerns.
- Low fluid level.
- Blown out solenoid gasket filter (7H200).
- Line pressure blow off valve stuck open (on solenoid body assembly).
- Cross leaks due to loose bolts on the solenoid body.
- Line pressure skill valve in pump stuck open.
- Restricted or damage sump filter.
- Sticking pump regulator valve.
|
| Low coast clutch pressure |
- Wiring harness (external or internal).
- SSPC-A solenoid.
- Coast clutch assembly.
|
| Low overdrive clutch pressure |
- Wiring harness (external or internal).
- SSPC-B solenoid.
- Overdrive clutch assembly.
|
| Low intermediate clutch pressure |
- Wiring harness (external or internal).
- SSPC-C solenoid.
- Intermediate clutch assembly.
|
| Low direct clutch pressure |
- Wiring harness (external or internal).
- SSPC-D solenoid.
- Direct clutch assembly.
|
| Low low/reverse clutch pressure |
- Wiring harness (external or internal).
- SSPC-E solenoid.
- Low/reverse clutch assembly.
|