Exh temp location

bank one (1) is on cylinder #1 side .
CYLINDER 1 IS ON the crank pulley end.(belts) cyl4 is transmission end.
S1 is front of cat
S2 is rear, of cat
no engine told or if calif or federal USA car.
some calif cars have split exh. manifolds on 4 cylinders engines
1.8 Liter. engine 4 cylinders. so we'd first wonder why you want to find , bank2 on 1 bank engine. must be calif car. ,right.

yes bank2 sensor is there. in service manual. !
1zz-fe engine vin code R, longer stroke ratio, more torque.
2zz-fe engine, yes 2 engine types. vin cold Y
.
found it shopping for exh man.
yes it has split manifold.
the exh.cam is opposite side of starter.
so hood up
facing engine
exh is this side, front
and bank 2, is RIGHT.
seen here.
ENGINE BELTS, RIGHT SIDE. BELOW.

Firebird App. Pontiac Part # Duration @ .050 Degrees Int/Exh Adv Duration Degrees Int/Exh Lobe Center Degrees Int/Exh Lobe Separation Angle Overlap Cam Lift Int/Exh Gross Lift Int/Exh
(1.5:1 Ratio Rocker) Gross Lift Int/Exh
(1.65:1 Ratio Rocker) 1977 TA6.6 549431 274/289 62 .249/.270 .374/.406 .411/.446 1978 TA6.6 10003402 273/289 54 .270/.271 .406/.407 .446/.448 1979 TA6.6 10003402 274/298 55 .249/.270 .374/.406 .411/.446 1967 400, 1968 350, 1973-76 400 w/ AT 9779066(E) OEM 200/210 273/282 106/116 111.25 55 .272/.271 .408/.407 .449/.448 1967-68 400HO w/ MT 9779067(P) OEM 200/213 273/289 113.5 54 .272/.271 .408/.407 .449/.448 1968 400 HO MT & RA-I AT, 1969 350 HO MT, 1969 400 MT, 1970
RA-III MT/AT, 1971-72 455 HO MT 9779068(S)
OEM 212/225 288/302 113/118 116 63 .272/.271 .408/.407 .449/.448 1967 RA MT/AT, 1968 RA-I MT,
(Some 1969 GTO RA-III MT) 9785744 (H)
OEM 224/236 301/313 112/119 115 76 .272/.271 .408/.407 .449/.448 1968-70 RA-II & RA-IV MT/AT 9794041
(T) OEM 230/240 308/320 112/115 114 87 .313/.313 .470/.470 .516/.516 (Stock in RAIV)

just a thing to check. make sure your oil pump is in synch with your engine timing. sometimes the oil pump cycles 2 or even 3 times for each cam rotation. other vehicles it cycles 1 time for every 3 cam rotations. depends on your vehicle. otherwise, i'd say you have a valve guide seal in need of replacement due to oil slippling past it. rings are the worst case scenario since you removed the cylinder head did you prime it before you started it with an oil film? there are a lot of things it could be but i'd check these first.

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what do you mean by O2 sensor oxygen sensor? is located on the exh. pipe

Was your question "what exterior temp"?? What would you like to know about the exterior temp on your Mercedes?

it's seems like faulty exhaust temp sensor in exhaust or block exhaust.

Link to a factory manual here:
http://myweb.dal.ca/is353832/93fsm/maintenance/2maint.pdf

You might as well inspect/replace the PCV valve while you're there.

Because its real hard to gert to. Most likely the throttle body needs to be removed and maybe part of the exh crossover. Check if the INTAKE MANIFOLD GASKETS are leaking. If they are have them replaced and the thermostat at the same time. Intake gaskets are REAL COMMON. Once the intake is off, its a 5 minute job.

Here is the location of the sensor

There are usually bolt holes on one or both of the heads at the front of the head this will indicate that that end will face the front of the vehicle and then the heads can only go on one way.