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A MAP sensor is an anacronym for "Manifold Absolute Pressure" sensor. The sensor has a vacuum line going to it from an intake manifold vacuum port. It senses the amount of intake manifold vacuum or pressure depending on how far open the throttle (your foot) is when you drive. Wide open throttle-foot to the floor, dictates low vacuum in the intake manifold. This device is all part of your engine electronic control devices/sensors used to make your engine run at peak efficiency and perform its best.
Stand on the pasanger side of the car with the hood open, the intake manifold in now in front of you. The intake manifold is in two peices; upper and lower, the idle air control in attached to the lower. Look at the left of the lower intake manifold, between the firewall and the intake, its barely visible but you should see some electrical clips, two of the four bolts holding the IAC on, and the IAC itself.
Vortex engine? Got me. I thought Vortex was just a brand of supercharger. I believe you mean Vortec engine.. GM also called this the L31 (they use 3 letter/number codes for everything) This system used a SCPI (Sequential Central Port Injection) system... and the fuel pressure regulator is on the central unit, which is INSIDE the intake manifold- you have to remove the upper intake manifold to get at it (plastic part), and the Fuel pressure regulator will be on one side of the central unit where all the fuel lines go to, it has a tube on it open to the intake manifold (to read intake vacuum)
It is located under the intake manifold. With the hood open, look under the plastic intake manifold and it screws into the engine block. I removed the intake to get at mine. Not a very fun job.
yes you can
Need to know what you are working on. But most engines have camshaft oil gallerys and oil lifter gallerys under the intake manifold. If it is a overhead cam engine it has nothing under the intake, it is all open and empty, nothing there.
A cold air intake is an aftermarket part used to help open air flow to the engine. The cold air intake sucks up cold air from underneath the car and is attached to your intake manifold. So it is a pipe going from somewhere close to the bottom of the engine compartment leading to your intake manifold.
It's right in front of you when you open the capot
intake manifold runner control malfunction (stuck open)
If it is P1538 it is for intake manifold runner control malfunction bank two stuck open.
Most likely the intake manifold will need replaced, it can be expensive.
Trouble code P1537 means: Intake Manifold Runner Control Malfunction (Bank 1 Stuck Open) Trouble code P1538 means: Intake Manifold Runner Control Stuck Open (Bank 2)