Want this question answered?
check your egr valve or throttle positioning sensor
on the intake manifold near the throttle body
Could be the Throttle Positioning Sensor or the Idle Air Control Valve
you can't
As I understand it, the throttle positioning sensor helps regulate the air/fuel mixture by controlling the butterfly valve, which opens and closes to make sure the right mixture is getting through relative to the amount of throttle needed.
Could be a bad TPS (Throttle Positioning Sensor). or a simple vacuum leak!
Check for leaks in vacuum hoses, check for a cracked or gunked up Idle Air Control valve, and check you throttle positioning sensor.
Assuming that the battery is good, it's either the TPS(throttle positioning sensor)dirty so clean it up.It could also be the IAC valve, or EGR valve being dirty. But start with the TPS.
take off valve cover throw away old gasket replace old gasket with new put valve cover back on pwn
it is the valve which reduce the pressure.
If you are talking about the IAC idel air control valve,It is as simple as disconnecting the electrical connector from the IAC valve.removing two mounting screws and remove the valve from the throttle body.Installation is reverse.Be sure to install a new O-ring. Good luck!
Most GM PCV valves fit into a rubber grommet in the rocker cover and are connected to the throttle body by a hose.