Code 43 and 52 Help, Please ! 90 model L98

I have the light SES switched on permanently by driving for the first time.
I followed the method to find the codes and Here they are:
43 : Electronic Spark Control
52 : Fuel Calpak Missing
I have verified connectors and open ECM for look the calpak is fixed OK and put sillicon but I always have the problem.

Besides, my C4 lost of its power, that feels easily. She's in limp mode in fact...
Thank you for your help
Patrick
Last edited by Macfly; Aug 12, 2009 at 07:44 AM.
http://forums.corvetteforum.com/c4-s...e-42-help.html
A bad sensor could have taken out the ECM or less likely the memcals knock sensor circuit board.
If you don't have anybody in your neighborhood with a 90 or 91, you could mail me your memcal and I could check if the problem travels and shows up in my Vette as well.









