ok so my dads car was throwing cel # 7, 14, 23.
I know the 23 is for the knock sensor. which is unplugged at the moment.
I just replaced the throttle body and idle air control valve today.
After replacing them im now throwing cel # 6,7,14,22,23.
ive looked at all the underhood grounds. radiator support to valve cover, frame to tranny, thermostat ground, and batt ground. and all the ground box by the headlight.

this is a 93 civic with a jdm b16..was working fine with no check engines. he warped a couple valves from overheating, so he go the head redone and surfaced. during the head swap he broke the knock sensor. Im waiting on a new one to get here.

I dont understand the other cels. Im pretty sure all the sensors are good. Any help is appreciated, THank you

 

If you reset the ECU, do all codes return?

 

X2 reset the ecu see what comes back. Did you transfer the tps from the old tb?

 

reset ecu(pulled 15a fuse for 30 secs), all codes return.

as for the TPS. i did not use the same TPS, used the one from the new TB.

 

Check for swapped sensor connectors.

 

Yea only thing I can think of since some of those have the same plugs.

Who did the head change? You?

 

Did you check for any vacuum leaks around the tb?

 

i will check for swapped sensors.
its a 2 wire iacv 3 wire tps coming off the loom so i think those are good...
the map sensor is plugged in correct spot..

mite be the air temp sensor since its a jdm manifold i have one sensor left over. i will check

as for vacume leaks. i will look at those.

 

Match sensors to wire colors in the connectors.

 

so i switched the white intake air temp sensor and got cel 10, put the white plug back on and reset the ecu, cel 10 is still on.

checked for vacuum leaks there are none

:stumped:

 

take a picture of the engine harness near all the sensor with wire colors to all the sensors for all the codes you have sounds like something is switched

 

 

ok so found the problem. i guess my dad spliced a wire onto the thermostat ground that wasnt supposed to be there.

believe it is one of the wires used to splice in vtec.

i still have the 22, for the pressure sensor on the solinoid.

and the 23 for the broken knock of course.