Thank you all for the info. This would explain error code 51...

I picked up an 8747 ECM at a junkyard yesterday. When the RV exhaust system's finished I'll try out the ECM. If the last "mechanic"...

I'm new to TBI and am troubleshooting an RV I bought. The ECM set Code 51 (ECM/PROM problem). I removed it and found a remanufactured 1227747 ECM with an AUMZ PROM inside. In BCC lookup.xls this PROM...

Hi All,

I've been occasionally visiting as a guest, and finally joined to get access to some 1228747 schematics or wiring diagrams EagleMark posted in a thread.

I've worked on mechanical stuff...