Troubleshooting Troubleshooting – Suspension and Steering – 2.5L NA Estimated reading: 2 minutes Contributors Overview This troubleshooting guide is designed to help identify and repair suspension and steering issues specific to the Porsche 944 3.0L S2 (1989–1991). It focuses on common symptoms such as vibration, knocks, pulling, and tire wear, tailored for the late-model alloy control arms used in the S2 variant. Proper diagnosis and maintenance of these components are critical for ensuring safe handling and extending the lifespan of your vehicle’s suspension system. Vibration or Shake During Driving Possible Causes and Checks Possible Cause Checks Procedure Wheel alignment Have alignment checked by a wheel/alignment shop. N/A Tire or wheel out of balance Have balance checked by a wheel/alignment shop. N/A Worn ball joints or tie rods Check ball joints and tie rods for excessive play. Ensure compatibility with S2 alloy control arms. N/A Loose or worn wheel bearings Check and adjust wheel bearings as necessary. SUSP-08 Knock or Thump from Rear End Possible Causes and Checks Possible Cause Checks Procedure CV Joint Remove axle, inspect CV joint, and repack with fresh grease. SUSP-01 Transaxle If CV joints are not the issue, it may be a transaxle bearing. Have a transmission shop diagnose the noise to determine if the transaxle needs rebuilding. N/A Vehicle Pulls to One Side Possible Causes and Checks Possible Cause Checks Procedure Wheel alignment Have alignment checked by a wheel/alignment shop. N/A Uneven tire pressures Check pressures and adjust if necessary. N/A Front brake dragging Raise each side of the vehicle and spin the front wheels to check for brake drag. N/A Worn strut or shock absorber Check ride heights from side to side for equal height (measure from ground to the highest point on the wheel well). N/A Abnormal Tire Wear Possible Causes and Checks Possible Cause Checks Procedure Wheel alignment Have alignment checked by a wheel/alignment shop. N/A Tire or wheel out of balance Have balance checked by a wheel/alignment shop. N/A Worn ball joints or tie rods Check ball joints and tie rods for excessive play. Ensure compatibility with S2 alloy control arms. N/A Loose or worn wheel bearings Check and adjust wheel bearings as necessary. SUSP-08 Sources Clark’s Garage Pelican Parts Porsche 944 Workshop Manuals YouTube Tagged:Suspension and Steering Troubleshooting – Suspension and Steering – 2.5L NA - PreviousTroubleshooting – Manual Transmission – 2.5L NANext - Troubleshooting – Suspension and Steering – 2.5L NATroubleshooting – Clutch – 2.5L NA
