The 1991-1997 4.0L Ford Aerostar fuel pressure specifications.
| 1991-1996 | ||
|---|---|---|
| Engine | KOEO | KOER |
| 4.0L Aerostar | 35-45 PSI | 30-40 PSI |
| 1997 | ||
|---|---|---|
| Engine | KOEO | KOER |
| 4.0L Aerostar | 35-40 PSI | |
KOEO = Key On Engine Off.
KOER = Key On Engine Running.
FUEL PUMP PRESSURE TESTS: You can find the fuel pressure test explained in a step-by-step manner here:
- How To Test The Fuel Pump (1993-2000 4.0L V6 Ford Explorer, Aerostar, And Mercury Mountaineer).
- Power To Fuel Pump Check (1991-2010 4.0L V6 Ford Explorer, Aerostar, And Mercury Mountaineer).
- Fuel Pump Inertia Switch Tests (1991-2010 4.0L V6 Ford Explorer, Aerostar, And Mercury Mountaineer).
ENGINE NO-START DIAGNOSTICS: Troubleshooting an engine no-start on your Ford Aerostar, the following guide is a good resource:
Where To Buy A Fuel Pressure Gauge
The following fuel pressure test kits have the Ford Schrader valve adapter you'll need to connect the fuel test gauge to the fuel injector rail:
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More Ford 4.0L Aerostar Tutorials
You can find a complete list of 4.0L Ford Aerostar tutorials in this index:
Here's a small sample of the tutorials you'll find in the index:
- How To Test The Fuel Pump (Ford 4.0L Aerostar, Ranger, Aerostar).
- How To Test Engine Compression (1991-2010 4.0L V6 Ford Explorer, Aerostar, And Mercury Mountaineer).
- How To Troubleshoot A No-Start Problem (1991-2010 4.0L V6 Ford Explorer, Aerostar, And Mercury Mountaineer).
- How To Test For A Blown Head Gasket (1991-2010 4.0L V6 Ford Explorer, Aerostar, And Mercury Mountaineer).
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