u0401:82-08 Code and other issues, can you help me please?

[MarkM]

Battery is 12.7v with the car turned off

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[DonnieO]

Battery is 12.7v with the car turned off

That's right with the car off

 

[WildHorse]

Shouldn't be that low. 14s at least

Ford uses 'smart charging'. Sometimes it charges, sometime it doesn't.

 

[DonnieO]

I've never seen my voltage drop below 13.5

 

[WildHorse]

I've never seen my voltage drop below 13.5

I've seen mine goto 12.9v, especially when cruising down the highway.

 

[MarkM]

I've seen mine goto 12.9v, especially when cruising down the highway.

Did you see my vid above? I just feel it’s very strange to see it drop in acceleration and go to 14v + when I lift off every single time…….is that normal?

 

[WildHorse]

Did you see my vid above?

Yes. While every car is different (based on options, etc.). You can always get a load test on the battery for peace of mind.

Funny story, floor it with your AC on, the PCM will shut it off.

 

[MarkM]

Yes. While every car is different (based on options, etc.). You can always get a load test on the battery for peace of mind.

Funny story, floor it with your AC on, the PCM will shut it off.

That vid above is with a/c on, I never turn it off, I didn’t notice any difference when it was floored.

 

[WildHorse]

That vid above is with a/c on, I never turn it off, I didn’t notice any difference when it was floored.

Cause it's still blowing cold, with the compressor disengaged. Regardless, your charging is fine.

 

[MarkM]

Cause it's still blowing cold, with the compressor disengaged. Regardless, your charging is fine.

Thanks, although I’m a bit disappointed and desperate to find a fault

 

[WildHorse]

Thanks, although I’m a bit disappointed and desperate to find a fault

So was I. Took like the better part of a month but eventually I found it.

 

[WildHorse]

LOOOOONNNNNNGGGGG shot, but did you mess with tire sizes, used FORscan to change anything, etc. ?

 

[MarkM]

LOOOOONNNNNNGGGGG shot, but did you mess with tire sizes, used FORscan to change anything, etc. ?

Not changed anything, running oe wheels and tire sizes. Another long shot please lol
Do you suspect a wheel speed sensor?

 

[WildHorse]

Do you suspect a wheel speed sensor?

Leaning that way.

 

[MarkM]

Leaning that way.

Just making sure you aren’t seeing the traction light and thinking it’s a fault?…..I only drive in track mode so it’s always on

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