Hi im new in this forum and im looking for help
i just buy a civic sedan 96 for 800$ the body is clean for a 319 000k car
but engine is a bit tired
engine seem to be d16y7
i do not have the car history at all
engine code is P1509 .. IACV problem so i changed the iacv
that didnt fix it code still there
i checked for any leak there is none
i plan to change the engine soon but untill i do i want to roll it
after changing the iacv i cleaned the trottle body, injector..
im about to check compresion too
i dont want to invest in that engine but i need the car to go work



here is a video of the problem the car dosnt have rpm in it but under low rpm this is what hapen http://www.youtube.com/watch?v=VPGVth9HECs
on the video the new IACV is on and gota to say that i unplugged the plug of the iacv while the car was running and nothing happen

thx for any help and i dont need haters
I DO KNOW THE ENGINE IS SCRAP lol over 300k on it i just want to finish winter before puting another engine in it

 

First- grease your clutch pedal.

Second- I hope that's temp difference and not white smoke out the tailpipe. is it burning oil?

For those code(s) I would check for loose connectors at those sensors (I know, you already know the IACV is plugged in) and the ECU first. With those codes it leads me to believe all 3 sensors are shorted somewhere, check the harness for cuts and such.

 

the smoke is because engine is cold and its cold outsidebut you can see that the tail pipe is spiting oil on floor and i have a small leak from oil pan gasket

I also think its a cuted wire somewhere
before i check out the engine code i was thinking of the TPS maybe
or a broken piston rings ? cose it spit oil from tail pipe but the smoke would be darker to black

 

It may be a bad headgasket that's causing it to burn oil. Check for broken wires/ loose connectors for those codes tho.

 

If you reset the ECU, does the code return?

 

reseting ecu you mean erasing the code ? i did it after changing the iacv and it came back like 3 seconde after
going back on it tomorow iam wondering a seconde thing
can i change the whole manifold and put a y8 manifold with all y8 infector fuel rail and trottle body on a y7 head ? and would that fix my problem ? i could also swap the whole head for a y8 but 319 000 kilo on engine ...... i dont really feel it

 

Bump
We cleaned again the manifold We expected backfire in the manifold the TPS cannot be removed on this one its not screw i also checked wire found 2 cuted wire one is probly for RPM cuz now when u push the trottle speedometer go up like rpm the other wire is PURPLE cant find where it goand there is no tension in the wire

i still wonder if i put my d16y8 manifold on it what else do i have to change.. computer ?do i put my old d16y7 injector and fuel rail or i put y8 injector and fuel rail

 

bump

 

ok since I cant find the problem Im trying the intake swap
it is a d16y8 intake mani from a acura 1.6EL 97 and it was automatic if i remember well but i took the ECU from a manual one..
Im at the point if i reuse d16y7 fuel rail and injector or use d16y8 fuel rail and injector
I also read that i may have to reuse my old d16y7 Throttle body because of the IACV
and what is about air injected ?