Most driveability problems in Chrysler Corp. multi-point EFI system result from faulty wiring or loose and/or leaking hose connections. To avoid unnecessary component testing, visual check should be performed before beginning trouble shooting procedures. Preliminary visual check should include:

Air ducts at air cleaner, turbocharger and throttle body
All electrical connections at components

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

Throttle body
Solenoid bank
Vapor canister
PCV valve to turbocharger vacuum port
Back pressure transducer
MAP sensor

Ensure that following electrical connectors are properly attached:

Two 25-way connectors (Red and Blue) at logic module
3-way and 1-way connectors at ASD relay
12-way (White) and 10-way (Black) power module connectors
4-way and 1-way connectors at solenoid bank
2-way speed sensor connector (in-line with speedometer cable)
2-way charge temperature sensor connector
6-way throttle body connector
Four 2-way fuel injector connectors
O2 sensor connector
2-way coolant temperature sensor connector
Two 3-way connectors (Gray and Black) at distributor
1-way connector at detonation (knock) sensor
Two 3-way radiator fan relay connectors
Ground eyelet mounting onto 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