Harness Inspection

MAP Sensor Harness Inspection:

Step 1

MAP Sensor Harness Inspection:

Step 2

MAP Sensor Harness Inspection:

Step 3


TROUBLESHOOTING HINTS
Hint 1: If the engine sometimes stalls, try starting the engine and shaking the manifold absolute pressure sensor harness.If the engine stalls, the manifold absolute pressure sensor connector contact could be defective.

Hint 2: If acceleration is poor or the engine stalls, the vacuum hose between the manifold absolute pressure sensor and the intake manifold could be blocked.

Hint 3: If the engine will run at idle speed even if the intake manifold plenum pressure is outside the standard value, there is a large probability the cause is something other than the manifold absolute pressure sensor.
a. Combustion inside the cylinders is defective (Defect in spark plugs, ignition coil, injectors, compression pressure, etc.)
b. Air is entering the intake manifold through a gap in the gasket.