Re: How to Repair Relay Control Module (RCM) - (Mystery no Start)
That's correct, the jump starts did not affect the soldering
that had been previously repaired by Tighed. It just messes with the relays. (bad soldering and bad relays are 2 different issues on the RCM) my crossfire sits for long periods of time because of my job I travel often so my battery will lose volts (probably due to it being an older battery but that's another story) anyway, that's how I noticed the jump starts were causing my RCM's fuel pump relay to go bad shortly after jumping ( 2 -3 weeks ) so what I did is purchased a battery charger and now I remove the battery to charge when needed. Haven't blown any more relays. Just my 2 cents! Cobra1951f if your fuel pump relay blows you will 1- Not hear the short buzzing/humming noise coming from the back of the car when you turn the key once (before cranking) It's about 3 seconds long which means the fuel pump is not working/sending fuel and car will turn over but not start... 2 - Car will stumble and die at any moment idling or in movement, what I noticed is that when the soldering joints are bad the car just flat out dies with no other warnings and when the fuel relay is bad it stumbles before it dies as if you were out of gas.
Last edited by BenzFire; Mar 30, 2017 at 12:30 AM.