bouvie1

AC vents were working putting out cold air,when I changed spark wires,now cold air comes from lower floor vents.Any ideas solutions greatly appreciated

7T1vette

You probably pulled a vacuum line loose in the engine compartment when you were changing the plugs. Vacuum operates the deflector doors in the HVAC system. With no vacuum going to the control head, the system probably defaults to "Heater" mode.

bouvie1

Thank you for your knowledge and input,will check tose vacuum lines out for leak or pulled off.because a/c vents worked prior to plug wire install,bouvie1