Most driveability problems in the Chrysler multi-point EFI system result from faulty or poor wiring, or loose and/or leaking hose connections. To avoid unnecessary component testing, a visual check should be performed before beginning trouble shooting procedures to help spot these common faults. A preliminary visual check should include:

Air ducts to air cleaner, from the air cleaner to turbocharger and from turbocharger to throttle body.
All component electrical connections must be clean, tight and unbroken.

Check vacuum lines for secure, leak-free connections in these areas:

Throttle body.
EGR and purge solenoids (located on a common bracket at right rear corner of engine compartment).
Vapor canister.
PCV valve to turbocharger vacuum port.
Back pressure transducer.
MAP sensor.

Ensure that the following electrical connectors are securely attached:

25-way connectors (2) at logic module.
3-way connector at MAP sensor.
3-way and 1-way connectors at ASD relay.
12-way and 10-way connectors at power module.
4-way connector at EGR and purge solenoids.
2-way connector at speed sensor (located in line with speedometer cable).
2-way connector at charge temperature sensor.
6-way connector at throttle body.
2-way connector at each fuel injector.
O2 sensor connector.
2-way connector at coolant temperature sensor.
3-way connector at distributor.
1-way connector at knock sensor (located at rear of valve cover).
Harness ground eyelet mounting to intake manifold.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Preliminary Checks

Use the Manual With the Right Hardware

When to See a Mechanic