Hi dudes,

I have one problem after the H22A4 was installed on my 92 Prelude (automatic). When I rev the engine up around 4800 rpm (vtec kicks in) with tranmission engaged, the red engine light will come on (code 1). If the tramission is not engaged, the problem would never come on (the engine light does not come on ,even up to red line). I already replaced a new NTK(NGK O2 sensor , part#: 24172, but the problem still not being solved. Therefore, I doubt the issue comes from transmission's controller (computer) becasue I did not replace it in JDM one, is it?

Here is what I have done on my car.

I installed:

- North American's H22A4 motor (2000 prelude)
- JDM OBD1 SR-V automatic ECU
- OBD1 fuel injectors

PLEASE help me to resolve this issue becasue it is so annoying after I installed the H22A4 motor. It suppose to be faster with Vtec, right ... so now its no FUN at all ! Please give me a hand , GUYS !

**PS: You may send me private message if you prefer, Thanks !


Thank you so so much !

 

do you know what the code 1 cel stands for? my guess would be the jdm obd1 ecu with the combination of your h22a4 is the problem at hand. maybe you should try the using the search tool on here, might have some luck. i bet someone will say you should be using a US spec obd2 ecu. or perhaps somethings not wired up correctly.

 

What OBD2 automatic ECU should I use, need Vtec and automatic? What year of the ECU? I did some search here, but I could not find one solution that addresses this particular issue!! Please spread it out and help me to find the complete solution!


Thank you !

 

i believe its the P5ML54 ecu. this is for 98-01 preludes with the automatic h22a4

 

No, the 98 -01 ECU's plug does not fit on 92's prelude !

Thanks

 

sounds like the computers not getting the reading it needs from the o2 sensor. check your wiring.

 

need help !

 

just curious, did you buy the heated o2 sensor or the primary one?