my 96 Delsol D16 had burnt plugs. replaced and pulled injectors but they looked ok. They all measured 14.2 ohms and looked clean. Plus they click ok when fired. I replaced the PCV valve. Wires are new. If I clear the codes it will run fine for about 30 miles..no missing good power etc. Then the code comes back and it starts losing power and hesitating.....I've replaced the fuel filter.
Have not recieved any codes for the O2 sensor or anything else......
What else could be causing this code?....follow me on this
I added a short pipe intake with a K&N type filter on it.
Instead of the mixture being "too lean" as the code is indicating, would it not appear to be too lean if the injectors could not keep up with the extra air flowing throuigh the throttle body.....
I know the ECU woild try and make the injectors fire longer....etc to make the mix correct but maybe the program is not capable of keeping up.....?
I've been unable to find what type of injectors are stock for this engine D16Y7
I see a lot of injectors on ebay but don't know if they are physically swappable.
I guess the rail is rated at about 32psi stock??????
Would a different / bigger injector help the problem????
I'm just kicking the idea around....any feedback would be appreciated.

 

bad o2 sensor...

 

I have never gotten a bad O2 sensor code though.......
It would have to be the top sensor also.