I bought a 1993 four door civic EX with a 5 speed B18a OBD1 also with Hydraulic Transmission not sure which but the problem is that I noticed the ECU is a P28 automatic not manual which it runs fine but has Codes like:

19 Automatic Transmission lockup control valve
21 VTEC spool solenoid valve
43 Fuel supply system

And the engine REV lines at 8000rpm, ABS light is always on. Can anyone tell me if I should leave it how it is and fix the bad codes or get a PR4 ECU or P74 ECU OBD1. Thanks

 

Bump

 

anyone

 

find someone with a manual P28 who will let you try it out and see if the codes disappear. If they do than you know you need the right ecu. I would suggest just buying one anyways.

 

you need a manual p74/75 ecu and you should have no codes. Those codes are for vtec and automatic tranny equipped car

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dat_flip &raquo;</TD></TR><TR><TD CLASS="quote">you need a manual p74/75 ecu and you should have no codes. Those codes are for vtec and automatic tranny equipped car</TD></TR></TABLE>

wow I guess I didn't read his first thread right. like he said you need a P74/75 because your non-vtec. Good call dap-flip

 

How about the ABS light is on when I drive in the morning and stays on all day.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CivicSiRyder &raquo;</TD></TR><TR><TD CLASS="quote">How about the ABS light is on when I drive in the morning and stays on all day. </TD></TR></TABLE>

you have brake fluid in your resevior's?

 

You should check the code for your abs system, it could also be a bad wheel sensor. Easy to swap out.