OK, maybe someone can please help me out. The crx was off the street for about a year and a half due to a t-belt letting go its a 91 Si. I swapped in a SOHC ZC and it runs good, pulls strong until about 4k rpms stutters then cleans up just before 5k then stutters again at 6k and cleans up at 7k. Each time it does this the CEL comes on but it goes back out and does not throw any code. I ran up some hills and it pulled fine and load did not seem to change the issue. I have also noticed with all the same equip as before this motor sounds alot more throaty than the a6 did.

I will also get a random CEL with no code here and there that will come on for a sec or two then go out again no codes being displayed.

I have checked harness, grounds, plugs, sensors etc.. and am kind of stumped as to where to go next. The car ran perfect prior to the t-belt letting go.

Any help or thoughts here would be much appreciated. I used to post under Balue3 but forgot password and dont have original e-mail set up with that accoung so had to register with a new one until I can get it reset. TIA