← Back to list

1997 Crown Victoria 4.6L with P0352 and P1000 OBD2 Codes - Stalling at 30-50 MPH

Model: 1997 Crown Victoria Fault Code: P0352 Posted: 2017-02-17 19:51

I'm experiencing consistent stalling issues in my 1997 Ford Crown Victoria when driving at 30 mph and 50 mph, as well as while in reverse. The vehicle exhibits hesitation and loss of power at these speeds. OBD2 diagnostic codes P0352 and P1000 are showing up consistently. I've already replaced both dual coil packs (cylinder 2 and 8), spark plug wires, fuel regulator, fuel pump, fuel filter, and the fuel relay — yet the symptoms persist. I'm trying to determine if P1000 is directly related to P0352 or whether they are independent issues. Specifically: - Does P0352 indicate a misfire in cylinder 2 or 8? - What does P1000 actually mean — is it related to emissions monitoring not being ready due to code clearing, battery disconnection, or KAM (Keep Alive Memory) reset? I've tested the spark plug wires and found rust buildup on cylinders #2 and #8. I cleaned them with sandpaper, which improved spark but didn't fully resolve the issue. Next steps: - Using an OBD2 scanner in Mode 6 to check misfire counter and shake/tug tests. - Performing a KOEO (Key Off, Engine Off) test on all three wires at each coil pack to verify voltage continuity — especially looking for open circuits near connectors. - Investigating potential wiring faults, as the coil packs are only connected via three wires and failures often occur within inches of the connector. I suspect a faulty electrical connection or degraded wiring rather than a failing component. I'm also considering replacing the mass air flow sensor with cleaner and retesting — though no code is currently present, symptoms align closely with MAF-related issues. Any insights on whether P1000 affects engine performance or if it's just an emissions flag would be greatly appreciated.

Related fault codes
P0352P1000
Comments (6)
Anonymous 2017-02-17 20:04

Is there a connection between the ECM and these codes? Could a faulty ECM be causing both P0352 and P1000?

Anonymous 2017-02-18 09:17

P1000 indicates that emissions monitoring is not ready — typically triggered by clearing codes, disconnecting the battery, or KAM (Keep Alive Memory) reset. This code does not directly affect engine performance but may prevent full diagnostics from being available.

Anonymous 2017-02-18 09:26

Could you clarify which fuse is involved in the KAM system? I'm trying to understand if a blown fuse could be contributing to this issue.

Anonymous 2017-02-18 10:40

The fuse itself isn't likely the root cause. The real culprit is often the KAM (Keep Alive Memory). When the vehicle's memory is reset, emissions monitors may not initialize properly. P0352 specifically points to a misfire in the driver-side coil pack affecting cylinders 2 and 8. I recommend checking for additional codes and performing these tests: - Use an OBD2 scanner in Mode 6 to review misfire counter, shake/tug test, and connector wiggle. - Tug gently on the electrical connectors at each coil — if misfiring increases, it suggests a loose or failing connection. Since there are only three wires per coil pack, wiring failures often occur within the first few inches of the connector. Always verify 12V supply during KOEO (Key Off, Engine Off) testing on all three wires — any drop in voltage indicates an open circuit.

Anonymous 2017-02-19 12:11

I inspected cylinders #2 and #8 spark plug wires — found significant rust inside. I cleaned them with sandpaper, which improved spark quality. All other wires are fine. Currently low on funds, but next month I plan to investigate the mass air flow (MAF) sensor using a cleaner, as symptoms like hesitation and lag at specific speeds strongly suggest MAF-related issues — even though no code is present. I replaced the coil packs from a junkyard; they were crack-free. After cleaning wires #2 and #8, I reset the PCM and will monitor performance closely.

Anonymous 2017-02-19 13:04

Confirmed: P1000 with coil pack B on OBD2 — I took the mass air flow sensor off to get it scanned at Advance Auto Parts. Unfortunately, they sold me a defective coil pack from a junkyard. I'll replace it next week and monitor for improvement. Thanks for the help, Kev.