2003 Ford Excursion VIN: 1fmsu43px3eb55395
#1
2003 Ford Excursion VIN: 1FMSU43PX3EB55395
Excursion ran well & pulled well
~ batteries draining overnight
~ one evening tranny went into limp mode.
~ cannot read codes as snap on tools indicates "no communication"
~ after a week of sitting start would not work unless crossed at pole
~ changed out PCM (beside battery):
......... now starter works without crossing!
......... batteries still drain
......... no communication from OBD-II
......... tranny still in limp mode
~ batteries draining overnight
~ one evening tranny went into limp mode.
~ cannot read codes as snap on tools indicates "no communication"
~ after a week of sitting start would not work unless crossed at pole
~ changed out PCM (beside battery):
......... now starter works without crossing!
......... batteries still drain
......... no communication from OBD-II
......... tranny still in limp mode
#2
No communication with snap on scanner is usually blown fuse or bad cable or connection. What scan tool are you using? Does it have " keys" ? You may have a bad key. Your snappy dealer should be able to help with cable and keys.
You can do simple test to resolve battery issue.
First make sure both batteries are good! Bad batteries can be shorted internally and will make u crazy.
Disconnect both batteries positive cables. Leave neg cables. Connect volt meter between pos. cable and battery. You will see a draw if there is a problem. Pull fuses till your draw goes away, you have found problem circuit! Now the fun begins as you narrow down further!
You can do simple test to resolve battery issue.
First make sure both batteries are good! Bad batteries can be shorted internally and will make u crazy.
Disconnect both batteries positive cables. Leave neg cables. Connect volt meter between pos. cable and battery. You will see a draw if there is a problem. Pull fuses till your draw goes away, you have found problem circuit! Now the fun begins as you narrow down further!
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