Hi,

I bought this van with a peculiar problem.
When trying to accelerate the engine cuts out for a quick second and the lights flickers along with the check engine & battery light and the coolant gauge goes to zero and back to normal.
Auto start stop turns itself off too.
Its like the car suffers a power outage for a nano second.
A gear oil message appears in dash but I have flushed and refilled the automatic transmission.
No dts in Fordscan but the pre scan shows these codes:
U0100:00-28
C0040:64-68
u0100:00-08
u0401:00-08
U0415:00-0A

Battery is in good condition, I have tested it.
According to the codes it seems like there is a problem with ABS not communicating with ECU?

Here is a video of it when it happens
https://youtube.com/shorts/0A-extJjnNg?si=T4XtLLLqEcq4QbKt

 

1) Check your battery terminals make sure they torqued at 8Nm, don't overtighten it specially if you recently removed the cables.
2) Alternator, check the wiring.
3) Main body ground to the chassis, the other end from the battery ground post
4) Ground strap (to the engine block)
For other torque specs not shown above please look them up.

You can see light shows (which you can ignore) especially when there is an issue on the alternator. We all know that when the vehicle is running, alternator is taking over the duty of the battery, but the battery wiring must be intact. So you might not have issue with the battery itself, the wiring and connections should also be checked. Additionally it's normal to see light shows with random errors popping up when there is an issue with the alternator itself or its relevant wiring. Worst case remove the alternator and take it to autozone for a bench test.

If at all possible try not to remove the bolt/nut on the wiring, especially on the battery. If you have an obd2 memory saver with a noco genius 10 set it to 12v supply mode.

 

To look into this problem you need to look at what happens when you accelerate.

Among the list is,
1. increased electrical load is placed on the ignition , fuel and electrical systems.
2. The engine may lift up enough to lose ground OR power supply through any wires /cables affected by engine movement..
This could take some real looking and checking to check all the places that could interrupt power or ground.
AND , if it interrupts power to the computer , you can get the same result.
It would come as no surprise that might be why the former owner unloaded the vehicle.
Possibly no one could find the cause or the cost was more than they wanted to spend, we don't know.