Sorry yes just retention should be fine
What do the steps mean?High beam should not effect the idle much
There's a few possibilities
I would start by looking at the idle steps heres working car with 44 steps
View attachment 450580
And a faulty car, that stalls if you operate the front windowsView attachment 450581
83 steps
How much the idle control valve is open
If it's blocked, and too far open the car will struggle to keep an idle under all conditions
Possibly notIs this somtheronh I could read with my silly little scanner?
Also sorry it’s not high beams—
It’s whenever turn headlights on rpms dip to 500 and car stutters
Possibly not
Spray some carb or brake cleaner down here
And see if there is any improvement
View attachment 450606
I tried cleaning it a little I thinkThat's a flyby wire throttle
Not cable
No idle control valve
Engine off, ignition off
put some brake/carb cleaner on a rag, don't spray it inside
Push the butterfly valve open and clean the sides where the valve sits
Looks like it's been cleaned recently
Not really viable
Parts add up to more than getting one from a breaker
The differential can be changed
The input bearing can be changed
The input seal can be changed
The differential seals can be changed
The bearings at the back need a large bench vice and impact wrench
Everything else needs special hydraulic press, long thin bearing pullers, special tools as well as expensive part