Need Help 93 Ckp Problem!!!!!

[No_Reservations]

Out of no where my boosted cb7(f22a4) wont rev past 3k.. ive replace the engine harness and 3 dizzy i even went and got another ecu hondata s300 and still nothing has changed..im lost guy and really need your help on this one.

[masospaghetti]

Have you checked fuel pressure? Ignition coil/wires/plugs? Sounds like weak ignition, low fuel pressure, or bad fuel.

[deevergote]

Is your check engine light on? Not revving past 3k is "limp mode". If both the old ECU and the new one are working correctly and there is a problem, then both would go into limp mode. If your check engine light is on, you need to pull the error code and fix the problem. If the light is not on, the first thing you need to do is verify that the bulb isn't blown (I can't tell you how many times people have insisted that their CEL wasn't on, only to realize that the bulb was out.)

Also, unless that new Hondata S300 is tuned for your specific setup, i wouldn't run it. You're going to need to get that tuned before you can safely use it. I would also remove all turbo components until you get the engine running properly. That's just asking for a paperweight.

[No_Reservations]

Have you checked fuel pressure? Ignition coil/wires/plugs? Sounds like weak ignition, low fuel pressure, or bad fuel.

Yes new plugs I'll check the fuel pressure today thank bro

[No_Reservations]

Is your check engine light on? Not revving past 3k is "limp mode". If both the old ECU and the new one are working correctly and there is a problem, then both would go into limp mode. If your check engine light is on, you need to pull the error code and fix the problem. If the light is not on, the first thing you need to do is verify that the bulb isn't blown (I can't tell you how many times people have insisted that their CEL wasn't on, only to realize that the bulb was out.)

Also, unless that new Hondata S300 is tuned for your specific setup, i wouldn't run it. You're going to need to get that tuned before you can safely use it. I would also remove all turbo components until you get the engine running properly. That's just asking for a paperweight.

Yes check engine light is on code 4

[deevergote]

Well there's your answer, fishbulb. Crank position sensor (now that I type that, I'm assuming that's what you meant by "ckp"...) would most definitely throw you into limp mode. The sensor is in the distributor on the F22A4. Therefore, if you've replaced the entire distributor, that means one of two things... 1) your replacement is also faulty, or 2) there's something wrong with your wiring. Check the wiring first. Look for damage at the plugs on both ends, and keep an eye out for cracked sheathing. Your wiring is over a quarter century old, so the sheathing may have cracked somewhere. Especially when exposed to higher underhood temps generated by a turbo system. If your replacement is under warranty, trade it in for a new one. New parts fail more often these days... especially now that they're frequently lower-quality non-OEM parts, or remanufactured units.

[No_Reservations]

Okay yes I'll check the wiring more and I'll call Honda on the morning thanks for helping

[No_Reservations]

Well there's your answer, fishbulb. Crank position sensor (now that I type that, I'm assuming that's what you meant by "ckp"...) would most definitely throw you into limp mode. The sensor is in the distributor on the F22A4. Therefore, if you've replaced the entire distributor, that means one of two things... 1) your replacement is also faulty, or 2) there's something wrong with your wiring. Check the wiring first. Look for damage at the plugs on both ends, and keep an eye out for cracked sheathing. Your wiring is over a quarter century old, so the sheathing may have cracked somewhere. Especially when exposed to higher underhood temps generated by a turbo system. If your replacement is under warranty, trade it in for a new one. New parts fail more often these days... especially now that they're frequently lower-quality non-OEM parts, or remanufactured units.

Ok I've put new plugs and coil I've checked the wires and still the something do you by any chance know if there is a relay that may cause the problem

[deevergote]

No, there is not.
You checked the wires going to the distributor and ECU, right? Not the spark plug wires.

If your wiring is good, then the distributor seems to be your problem.