P1237 Diagnostic Trouble Code Discussion for June 2025
Fuel Pump Secondary Circuit Malfunction
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| Help Request | Posted | |
| 2004 Ford Focus ZX3 2.3L Cuts out, Stall VIN: 3FAHP31Z54 P1237: Secondary Fuel Pump Circuit. This car will drive fine when light on the throttle, but as soon as you push harder than about 1/3 on the pedal, it jerks back and forth, revs and then cuts out but does not die. It continues to rev and jerk until you let off the pedal and use less than 1/... |
June 11, 2025 |
