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Honda Civic VTi Engine Fault Codes P1399 and P0325 - Loss of Acceleration and Stalling

Model: honda civic v tec Fault Code: P0325 Posted: 2011-07-13 07:47

I recently replaced the engine in my Honda Civic VTi, but now the vehicle experiences a significant loss of acceleration and stalls unexpectedly. The engine runs smoothly at idle but fails to accelerate properly and eventually dies under load. Possible causes include a faulty knock sensor or fuel pressure regulator. Despite the engine starting and running normally at idle, the lack of power during acceleration is concerning. I need help identifying whether this issue stems from the new engine installation or a misdiagnosed component failure. Please advise on troubleshooting steps for these specific fault codes: P1399 and P0325.

Related fault codes
P0325P1399
Comments (2)
Anonymous 2011-07-21 03:22

Does the vehicle stall when you open the throttle? What is your exact make, model, and year of the Honda Civic? This information is critical for accurate diagnosis. Please provide those details so I can offer more targeted advice.

Anonymous 2011-07-21 17:54

The year and specific model are essential to pinpoint the issue accurately. As a general note, if you're replacing parts, avoid using aftermarket knock sensors—only OEM components should be used for reliable performance and code accuracy.