wolferaw
New Member
- Joined
- May 29, 2006
- Messages
- 2
- Points
- 0
- City, State
- midlothian, va
- Year, Model & Trim Level
- 95 xlt
95 Explorer, 4.0L Pushrod engine won't start. 12VDC measures good at the injector connector pins, but no ground signal from the PCM to the other pin on the injector connectors. The on-board EEC-IV KOEO test is totally inoperative (no signals and check engine light constantly on while running diagnostics). A third symptom is the fuel pump continually runs with the key in the run position (key on engine off).
All 12 Volt inputs and grounds to the PCM check good (12 VDC at pins 1, 57, 37, 22, 33, 21, and 8. Zero ohms to ground on pins 20, 40, 60, and 6).
I've swapped PCMs with one that tested good in the same vehicle a few weeks ago. Are there any sensors that would prevent the engine from starting while disabling on-board diagnostics, stopping injector pulses, and causing the fuel pump to continually run with the key in the run position?
Rich
All 12 Volt inputs and grounds to the PCM check good (12 VDC at pins 1, 57, 37, 22, 33, 21, and 8. Zero ohms to ground on pins 20, 40, 60, and 6).
I've swapped PCMs with one that tested good in the same vehicle a few weeks ago. Are there any sensors that would prevent the engine from starting while disabling on-board diagnostics, stopping injector pulses, and causing the fuel pump to continually run with the key in the run position?
Rich