i'm still getting a engine code 43 on my 93 accord EX. i changed the O2 sensor, my injectors and a new fuel pressure regulator. i was having this problem, when i accelerate the car moved fine then it would hesitate and once i release the gas pedel and accelerate again its fine. after i changed the fuel pressure regulator this problem went away, but i'm still getting the engine code 43. i disconnected the battery. any suggestions? i need to get this fixed ASAP since i have a emissions test due in June.

 

Check your injector resistor. I havnt seen many of these fail but it still happens. Unplug the resistors connnector from the engine wire harness. With the connector snap clip facing up the terminals inside should look like this:

[A__B__C]
[___D__E]

Check for resistance between each resistor terminal (E, D, C, and B) and the power terminal (A). Resistance should be between 5-7 ohms.