Originally Posted by
Rob M
In the end the issues with my original RCM related to the transmission, speedometer, and various brake/traction control MILs were solved by replacing the traction control relay. Engine would still not crank and continue running until I cleaned the contacts on the engine and fuel pump relays. So, at some point I will likely need to replace those relays as well. For now the RCM works fine and I have also procured a spare.
I had the "Mystery No Start" condition a few months back. Sent the RCM to DJ (tighed1) for repair. Feedback from DJ was poor solder joints on RCM board along with a couple of relays gone bad. DJ added the "Me So Horny" fix to my RCM & now the horn works without the car running. Best money I ever spent on the XFire.
Since that event, I bought a spare RCM from RockAuto.com &, like you, have it in my spare parts for the XFire.