b16 help in 88crx hf

[crxresurrect]

i am having problems with code 22 vtec oil pressure switch which i think a bad ground not sure and also code 10 is the intake air temp. and i was wondering if anybody can tell me where intake air temp. it is located at on the b16a1. When i start my car it takes it alittle bit to start when it starts it has a ruff time trying to idle smooth when it finally idles out its between 1000-2000rpms and then you give it the gas and it revs to about 5000rpm and cuts out and after about 2 to 3 mins of running the idle goes down and then it dies i was wondering if one of this code could be the problem or could it be valves need adjusting or anything advise would help. Thanks