I suspect you have low battery voltage that has caused a cascade of codes to show. These cars DO NOT like low battery voltage. It messes with the computers. Check your battery terminals for corrosion and tightness. Charge the battery FULLY and try a restart.
volvolugnut

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Check the battery for voltage issues then clean the ETM since you have an idle and pedal sensor issue.
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check big red wire at the alternater.

Turns out I forgot to replace the plastic cover that shields the battery. I suspect the metal fitting at the end of the hanging strap shorted the battery. Gotta be more careful about reassembly. . You can put a check mark for problem solved so when other look for an engine quitting issue they will ...

Solution upthread

Yikes, a primary short can end badly. I fabbed a positive cable cover from a plastic juice drink

Thanks for closing loop on this enotslim. That v70 you donated is still tooling around upstate nY doing social good.

Appreciate it, and the work you do in these troubled times

To address your concerns: a) There are lots of remotely mounted filters which use such lines. I doubt there's be a problem with that. b) There's always some oil which doesn't drain. Do each method and measure what drains. The consensus is "it doesn't matter". c) You might have to buy / hav...

I would ask myself how much money and time I am willing to invest into this project. Then I would look at odometer and question myself how many more miles I will be able to get out of this car prior to it draining all my savings in repairs. Then estimate number of oil changes at 3-4k interval that t...

If you are too old and lose interest, best is to find a local shop and bring the oil filter and oil. Win win situation...you don't have to do it, the mechanic makes some $ to feed his hungry family.

. Have been extracting motor oil, transmission fluid and master cylinder brake fluids since 2019. Upgraded to an 8L unit so do not have to pour out during an oil change. Unit doesn’t extract well if it’s too full. Not having to drain the motor oil and pouring it into a container then cleaning the dr...