Thought I'd post an update.

The new coolant temperature sensor fixed it.

Very glad to get my car back on the road. Got the opportunity to test it in cold, windy and snowy weather too. It was nice not having to worry if the engine would start in colder weather. :lol:

Thanks everyone for your ...

if you are ready to work on her volvo and has the time to, you can go for it, but personally l wouldnt get it . good luck

Sometimes a bad engine coolant temperature sensor will cause the hard starting issue you describe. Faulty readings will over-enrich the mixture for "cold start" conditions. There is probably a volt/ohm meter test for this kind of thing, but I just replace the sensor.

l am 90% this is his problem ...

flip it and get a toyota or honda for your daughter. volvos can be a pain to maintain if you dont have any experience with cars. especially if you dont know how to turn a wrench. l would not spend more money on a volvo that has not been maintained well. plus volvo parts are expensive and its not ...

you are not getting enough fuel pressure because of the wire you pinched l guess. did the wire come off all the way? check the fuel injector with the pinched wire and make sure the injector is a clicking sound with the car running.

Engine running, very smoothly
Step taken:
1.) new cam position sensor
2.) new fuel pressure relay
3.) new Bosch plugs, gap .028
4.) replaced deteriorated vacuum hoses
5.) cleaned air box filter with air pressure
6.) next week replace twc at another shop

Thanks to all for the expert advise, I ...

all 850s have a pcv oil trap and hoses that runs from the top of the engine through the oil trap back to the PTC. whats oil tray?

yea codes are o2 related, and vacuum leak related too. l have no idea on how to check for a cam position sensor, you might want to get one from the junk yard and try if it will help.
2. whats TWC if l may ask.
3. when was the last time your replaced your pcv. a clogged pcv wont cause a no start ...

check for compression first. the first five codes are misfire. how good are your spark plugs?

first l want you to test if you are getting enough fuel pressure. you can go to any autostore and get a gauge and hook it up on the fuel rail. turn the key to III position, do not start the car, take the reading for the pressure. pressure should be between 38-40 on a cold engine. if you are below ...