How to Clean the Map Sensor on a 2003 Neon

The 2003 Dodge Neon came in four trim levels, SE, SXT, R/T and SRT-4. The SE and SXT trim levels shared a 132-horsepower, 2.0-liter engine and the R/T trim level used a 150-horsepower, 2.0-liter engine. The high-performance SRT-4 model came with a 214-horsepower, turbocharged 2.4-liter engine. All three engines used a manifold absolute pressure sensor to read the pressure or vacuum in the intake manifold, which the vehicles computer used to change injector pulse and ignition timing. The MAP sensor uses a silicone sensor to sense the pressure, which makes cleaning it with harsh cleaners a risky task that can cause more bad than good. Dodge recommends only replacing a congested sensor, which is a simpler process than attempting to clean it.

Instructions

Removal

1

Open the Neons hood and find the intake manifold, the four-fingered, plastic component on the front of the engine. Find the manifold absolute pressure sensor on the far passengers side of the intake manifold.

2

Lift upward on the MAP sensor wiring harnesss locking tab and unplug the wiring harness from the MAP sensor.

3

Remove the two MAP sensor-to-intake manifold screws, using a ratchet and Torx-bit socket. Pull the MAP sensor upward with a slight twisting motion to remove it.

Installation

4

Apply a thin coat of new engine oil to the new MAP sensors O-ring, using your fingers.

5

Press the new MAP sensor in to the intake manifold and hand-thread its retaining screws. Tighten the retaining screws to 40 inch-pounds with an inch-pound torque wrench and Torx-bit socket.

6

Plug the wiring harness into the MAP sensors receptacle until it clicks into place.