That would be the O2 sensor after the catalytic converter.
That should be the sensor located after the catalytic converter.
Bank 1 sensor 3 would be the O2 sensor after the catalytic converter.
Need more info, is this the 4 cylinder or 6 cylinder engine and which sensor on bank 1.
That should be the O2 sensor just before the catalytic converter.
Bank 1, on a 4.3 L engine would be on the drivers side.
Passenger side exhaust pipe directly after the exhaust manifold.
Assuming this is a V-6, bank 1 sensor 1 would be the first O2 sensor in the exhaust on the drivers side of the engine.
Downstream ... This is after the Catalyst Converter.
The coolant temp sensor on a 2003 Chevy S10 V6 is located on the front of the intake manifold. To replace simply unscrew the old sensor and screw on the new one.
The 1994 S10 uses a MAP sensor, not a MAF sensor. We need to know size engine you have in that S10.
You won't find one. The 1991 Chevy S10 doesn't have a MAF sensor.
does not have one just a map sensor