I have a 1994 Bonneville LE (Vin# 1G2H X52L 1R42 30062) that has started running rough, had a friend read the codes with a Tech1

History: (3 codes listed)

PO123 - TP SENSOR
P1361 - IC TOGGLE SIGNAL
P1406 - EGR PENTLE ERROR

Current: (1 code listed)

P1361 - IC TOGGLE SIGNAL

Any suggestions on what to replace to solve my problem.
Thanks for any help and feel free to ask any questions to help diagnose problem!
Ed

P0123 https://www.gmforum.com/showthread.p...67#post1390951
P1361 https://www.gmforum.com/showthread.p...52#post1391299

I don't have the P1406 here, but it'* a EGR pintal code. From the sounds of it there'* a wiring problem. I would check to make sure nothing is pinched. Read over the links I posted, see if that helps. Also clear the codes and see if they come back.

Thanks for the info, you have helped me before and you were dead on with your help.
Ed

I had my friend clear all the codes yesterday and as soon as I started the car, P1361 code reappeared. We cleared it again and it came right back up. After reading the above links, I guess I need to replace the ICM, any links available on how to replace. Thanks again for your help!
Ed

You just remove the coils and the ICM comes right off.

ICM bolts are 5.5mm socket size

Thanks for the info!

Not very tight, they strip out easy.