Lots of Codes-where to start

[eeugross2]

CE light is on intermitently. Runs pretty good except sometimes cruising it shudders. If I lock out overdrive it seems to run better. Replaced Cam Sensor not long ago. Here are codes

176 always lean left
177 always rich left
212 loss of IDM input to ECA or spout circuit grounded
215 coil 1 failure
217 coil 3 failure
543 fuel pump secondary circuit failure

I'm thinking replace the coil, however I hate throwing parts at a problem just to find it was something else. Car is a 94 with 81k mi. Plugs aren't too old but I haven't replaced the wires.

Any help is appreciated.

Jim

 

[LOUDSHO92]

Replace the DIS, it tends to throw coil codes.

 

[rubydist]

and then reset the codes and check each day till you figure out what is going on. I suspect some of those codes are very old and not helpful at this point.

 

[msteiny]

Ageed, Clear the memory and reset the idle.

 

[eeugross2]

Cleared memory and will see what codes come up first. Thanks for the suggestions.

 

[projectSHO89]

You will find that the problems will be in the neighborhood if the DIS.