can't pull codes

Slysc

Registered User
My car is running real bad and my check engine light is on most of the time. However, I can't seem to get any codes out of it. When I tried the flashing light method, nothing happened. So I went to Murrays and bought the $200 code reader and EECIV card and tried to get some codes out of it but it says "error, check connection". The connection is fine. Is there a reason why my EECIV might not give up the codes? I do have an eeciv tuner which ran well before this so I don't suspect that it is the problem.

I heard something about a fuse that if blown would prevent the ecm from giving up codes. Is this true? If so, what fuse? Where?

Any help would be appreciated. The Woodward Dream Cruise is this weekend and I'd love to be there. But only if my SC is running right.
 
checking ecm

How do I check the ecm other than pulling codes? Is there a way that I can determine that my ecm is good or bad?
 
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