First RPM surge is me pressing the gas.

Everything else isn't me.

Seemingly fixed the idle (Adjusted the throttle stop scew)

Sometimes it will stall rather than shudder.

It was working fine the day before.

I went to go use it and at idle it idles at 1200rpm or so. Press on the gas it will go, and surge from 1500rpm to 2100rpm for about 2 seconds then rev up fine. Then go back to idling poorly. Sometimes if you let off the gas to fast it'll shutter off (Ive checked for vac leaks)

Other times when starting it'll idle properly then just shutter off

Then other times it'll just bounce from 500rpm to 2000rpm

Ive cleaned the IACV hasn't changed much, and I cant seem to find a replacement and Google says Regina and bosch ones aren't interchangeable

Googling into it, it sounds like it could be temperature related but im not sure where to even start.

Recently fixed an idle issue (Today) car idles perfectly fine now, and sounds better than ever before.

It will floor and rev up to redline just fine, but it seems if I press off the gas to fast it will shudder and die.

Revving it to about 4000 it will do the same.

Will start up perfectly fine and no other issues of note.

Hi,
I recently bought a Volvo 940 that was imported from Switzerland. It has a Brink tow bar fitted. When I checked the data plate under the bonnet, I noticed that the maximum permissible combination weight (car plus trailer) is not filled in. The gross vehicle weight and axle load fields are there, but the field for the combination weight is blank. Has anyone with a 940 (or a 740/760//960) seen a plate with no combination weight? I’m asking because in my country a vehicle cannot legally tow a trailer without this figure being documented.