mainevette93

Intermittently starts and cuts out after 2=3 secs.

Trouble codes

1-41

4-Err

9-71

problem was progressive and is now constant,pulled ecm and all connectors pins are clean and cant find bad grounds when car fires and starts it runs strong for 2-3 seconds prior to shut off. If you depress accelerator when it initially starts it will not accept additional fuel or increase RPM and still shuts down.

1993C4LT1

I have 93 also. Had code 41 in module1, but it went away. My car starts up fine, but once it's started(cold engine), it runs really bad and stalls. I have the diagnostic for code 41 in the 93 FSM. Let me know if you want me to post it.

Cliff Harris

Note that the "gas pedal" doesn't add more fuel. It adds more AIR. It's up to the ECM/PCM to add the correct amount of fuel to get the correct AFR.

Ratboy

I'm thinking vats problem. Is the security light flashing?

1993C4LT1

It wouldn't crank if it were a VATS problem.

9T3VETTE

ECM problem.

I recently went though this with my 93, getting the exact sequence of codes you have in module 1 and 9, both are communication failures. Mine would also want to stall out with any additional throttle input.

Check out SIA Electronics for refurbishing since there are virtually no ECM's available for purchase anymore.