2011 Raptor 300k issues

[JA1972]

Battery issues..thinking its the alternator..any info on how hard it is to change out ?? Already switched out battery...

 

[CoronaRaptor]

looks pretty easy bro. Remove the intake, disconnect the battery.

 

[The Car Stereo Company]

Battery issues..thinking its the alternator..any info on how hard it is to change out ?? Already switched out battery...

a quick test is to start the truck and then disconnect the battery. if it still runs, then the alternator is good. also take a meter and check the voltage while its running. should be around the 14v range

 

[JA1972]

Yeah it doesn’t stay running..Gonna change out the alternator today...

 

[The Car Stereo Company]

Yeah it doesn’t stay running..Gonna change out the alternator today...

please deposit my $500 diagnosis fee into my offshore bank account

 

[Spectragod]

a quick test is to start the truck and then disconnect the battery. if it still runs, then the alternator is good. also take a meter and check the voltage while its running. should be around the 14v range

That’s a great technique, in 1970, if you want a burnt up pcm, go ahead and disconnect the battery with it running.

You replaced the battery, did you reset the BMS?


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[CoronaRaptor]

That’s a great technique, in 1970, if you want a burnt up pcm, go ahead and disconnect the battery with it running.

You replaced the battery, did you reset the BMS?


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Is that true? Asking for a friend

 

[Cthulhu]

Is that true? Asking for a friend

My friend has the same question.

 

[The Car Stereo Company]

That’s a great technique, in 1970, if you want a burnt up pcm, go ahead and disconnect the battery with it running.

You replaced the battery, did you reset the BMS?


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whether the key is on and the battery dies, or its running and the battery dies, its no different. i wouldnt suggest doing it everyday, but its a simple test to check that the alternator is functional or not. also, when you get your battery replaced, a lot of places will do it like this to retain all you memory features.

 

[Spectragod]

whether the key is on and the battery dies, or its running and the battery dies, its no different. i wouldnt suggest doing it everyday, but its a simple test to check that the alternator is functional or not. also, when you get your battery replaced, a lot of places will do it like this to retain all you memory features.

Uhhh, yes it does matter. The pcm controls the alternator, there’s a reason the bms has to be reset after battery replacement, that diagnosis is not a good one.

Replacing the battery without resetting the bms will result in the alternator charging at its normal voltage but only at 10 amps, pretty soon, your battery will be dead, because the car is running off of it and your alternator is not charging the battery.

But feel free to diagnose as you choose, it’s that stuff that keeps me employed.


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