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Im having electrical issues with my ford expedition 2000 XLT

Customer Question
hi im having electrical issues with...
hi
im having electrical issues with my ford expedition 2000 XLT 4.6li model
we managed to replace the original battery with a taller one and ive used it for years already until lately the battery positive touched the hood momentarily and everything shorted out and the Overdrive indicator kept flashing. Now im getting these error codes from OBD2 scan tool:
P1747 - EPC solenoid short circuit
P0755 - Shift Solenoid B malfunction
P0443 - EVAP emission control system purge valve C fault
P0135 - O2 sensor heater circuit malfunction (bank 1 sensor 1)
P0155 - O2 sensor heater circuit malfunction (bank 2 sensor 1)
P1409 - EGR vacuum regulator solenoid circuit
aircon not working
the touching of the hood to the battery positive terminal occured for 2-3 seconds while the engine is running and we heard the engine run wild for 1-2 seconds and died. we immediately raised the hood and found the negative cable smoking for a brief 3 seconds. we diconnected batt positive immediately.
i tried clearing the codes and then started the car. the blinking OD lamp is still there and those fault codes still come back. the engine runs but its in limp in mode and sluggish. no CEL shows.
Submitted: 2 years ago.Category: UK Car
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Answered in 8 hours by:
9/29/2015
UK Auto Mechanic: Ron, Car Enthusiast replied 2 years ago
Ron
Ron, Car Enthusiast
Category: UK Car
Satisfied Customers: 36,347
Experience: ASE tech with 34 years of fixing cars
Verified

Hello, my name is ***** ***** I am a professional here at Just Answer. I have noticed that your question was not getting a response and thought I would see if you still need help with this.I apologize for the delay and I hope I can still assist you with this here.

One common thing that all of the circuits share is the power circuit , I would start first with checking the #23 in the battery junction box (under hood fuse panel, if its blown and or missing it can cause all of these codes to set.

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Customer reply replied 2 years ago
hithanks for the reply.
ive just checked fuse 23..as well as the rest of all other fuses and they are not blown.
fuse 23 is the 2nd row rightmost column isnt it?
under driver dashboard.
UK Auto Mechanic: Ron, Car Enthusiast replied 2 years ago

No it not in the interior fuse panel, its located in the under hood panel and its the one you need to check.

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Customer reply replied 2 years ago
can you pls show me the diagram you are using. im using the original user manual for my vehicle.
Customer reply replied 2 years ago
no need to discuss by phone. written is better for now so i have reference. tks
Customer reply replied 2 years ago
ok wait. let me check that fuse 23 under the hood.
Customer reply replied 2 years ago
hold on i found fuse 23 on my manual already under the hood. wait as my key was locked inside the car oh my..
UK Auto Mechanic: Ron, Car Enthusiast replied 2 years ago

Im using the fuse panel under the hold where its located as I mentioned. See the diagrams in the links below, copy and paste the links to your browser to open and view them.

https://dl.dropboxusercontent.com/u/104923897/Fuse%2023%20sept%2029.pdf

https://dl.dropboxusercontent.com/u/104923897/Fuse%20%232%20Sept%2029.pdf

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Customer reply replied 2 years ago
pls wait as my key got locked inside when the battery is disconnected.
UK Auto Mechanic: Ron, Car Enthusiast replied 2 years ago

Not a problem, I'm here all day.

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Customer reply replied 2 years ago
hi Ronsorry late reply. just managed to have it opened by a key specialist today.
fuse 23 under the hood is very much ok. i have checked them previously including the relays both under hood and under dashboard. nothing busted and i even tried to swap the relays.i also checked the fusible link in the battery positive. nothing.
Customer reply replied 2 years ago
i also checked the diodes beside the fuse 23. they are fine. could the shorting of hood to positive terminal might have fried something?
UK Auto Mechanic: Ron, Car Enthusiast replied 2 years ago

Yes it is very possible something could have shorted out and it very likely has to be something in the circuit your setting the codes for which include the HO2S circuit and the Transmission or even the PCM (computer) . Unfortunately with out being there its would be very hard to say where it is .

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Customer reply replied 2 years ago
hi
how do i proceed here. do i end up this conversation and wait for another guy to help me with my problem?
what must i do next pls?
Customer reply replied 2 years ago
my problem is not yet fixed and my last resort is to bring it to a nearby ford dealership in limp in mode.
Customer reply replied 2 years ago
can we try any other procedure pls?
UK Auto Mechanic: Ron, Car Enthusiast replied 2 years ago

I will open the question back up for you in hopes another expert has something different to offer. If so, they will respond back you.

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Ron
Ron
Ron, Car Enthusiast
Category: UK Car
Satisfied Customers: 36,347
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Experience: ASE tech with 34 years of fixing cars

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