I have a 91 s-10 blazer. It is located on the left side valve cover. It will have a single hose from PVC to the front of your carb. Ed
The PCV valve is in the passenger side valve cover of the engine with a hose leading to the intake.
There is no PCV valve on the 2.2 Liter engine.
Passenger side valve cover
The 1998 and newer S10 with the 2.2L engine does not have a serviceable pcv valve.
Horn valve? Please give more info.
under the master cylinder.
No, it does not.
If that S10 has the 2.2 L engine, it doesn't have a serviceable PCV valve.
Idle Air Control Valve
The ECM on a 1992 S10 Blazer is located below the glove box.
I would say that my 1998 S-10 does not have a PCV valve, at all, anywhere.
What engine???