Won't accelerate, engine bogs down

You should read check engine code.
It tells you more than you can guess.
You can buy quality $1000 snap-on OBD scanner or $30 cheap one.
$30 will do good job. (you need to google after car tells you error code because cheap scanner shows only code but not meanings in plain English)

or you can visit local autozone and ask them read code for free.
unless you ask car itself, nobody will be accurate.

You must have moved wiring when doing alternator would check too seeif you moved or unplugged something

The idle air control valve only controls idle speed.
The most common causes are restricted exhaust or air intake, or low fuel pressure.
Is the check engine light on ?

Try a different machine to read the codes then post a reply ,i have no idea what could cause this on this engine as remember that anything over 1.6/2.0 litre is regarded as a big negine here in europe ,most i work on are under 1.2 ,but if its not accelerating from idle then i would suspect a vacumn leak to one of the sensors but not having much practical experiance then i couldnt say exactly

if you have a check engine light on check the codes first.

Sounds like wiring problems with the engine harness.
The oil pressure not working could cause the hard starting problem.
The idle problem could be a faulty idle air control valve or a vac leak.
I would start with the check engine light and find out what the codes are.

no, idle air control valve is literally to control your idle speed.
what happen when you press on gas? car shakes, RPM goes up, or engine just bogs down?

can be anything need to be scanned auto store such as auto zone and advanced auto do it for free to get the trouble code

You have coil over spark plug ignition and one of your coils is bad.You need to find the bad coil and replace it.

you need to have it scanned for codes