Fault-Tracing Information

Poor Acceleration, Engine Sluggish

Trouble Code Condition(s)
- Diagnostic trouble codes (DTCs) in Motronic 4.4 engine control module (ECM) absent.
- Diagnostic trouble codes in AW 50-42 transmission control module (TCM) absent.
- Engine is hot.
- Fault is permanent.

Possible Source(s)
- Timing retardation due to knock
- Defective rotor/distributor cap.
- Damaged ignition cables.
- Blocked air cleaner / air intake.
- Uneven compression.
- Low fuel pressure.
- Blocked exhaust system.
- Faulty sensor signals.

^ To start fault-tracing proceed to Checking Mass Air Flow (MAF) Sensor section.