Need some help... converter won't lock
 

Well to start, coming home from the track last Friday night I noticed my converter was not wanting to lock at all and then it throws a SES light. So I get home check the fluid and all looks good. Take the car for a spin the next morning and the SES light is still on and same thing, the converter will not lock. I give a call to my tuner to see if we can hook up and check the code and make a stop while I'm out. Get back in the car and the light is out and the converter is locking fine. Drive around a bit more and it locks sometimes and sometimes it doesn't. Took the car this evening and the same thing. Any ideas what this could be a symptom of? All has been fine with the converter up until last Friday night, even since the h/c went in which was about 2 months ago. Thanks

Code be engine misfire codes but get it scanned and you will have the answer the light may be out but the code will still be there

thanks for the reply. I am pretty sure my tuner deleted the misfire codes when we were tuning the car on the street after the h/c swap. I will get it scanned. I did not know I could still retreive the code after the SES light went out. Thanks alot

Yes it will be in the history
let me know what you find

will do, thanks again