"What are the common issues with the 944 Turbo's engine and transmission?"

Question

Accepted Answer

The 1989 Porsche 944 Turbo, while a high-performance classic, has several well-documented engine and transmission issues:

### **Engine Issues**
1. **Timing Belt Failure**
   - The inline-four engine is an *interference design*, so a snapped timing belt can cause piston-valve collisions. Replace every 60,000–80,000 miles (your car has 74,128 miles).
2. **Turbocharger & Oil Leaks**
   - Oil leaks around the turbo bearing housing and intercooler hoses are common.
3. **Water Pump/Seals**
   - Failures here can lead to overheating.
4. **DME Relay**
   - Electrical issues in the fuel injection/ignition system.

### **Transmission Issues**
1. **Clutch Wear**
   - The high-friction clutch disc (AOR transmission) wears quickly. Check hydraulic system for leaks.
2. **Gearbox Syncros**
   - Worn synchros in 3rd/4th gears may cause shifting difficulties.
3. **LSD Maintenance**
   - The limited-slip differential requires fluid checks.

### **Your Car**
- The FAQs about timing belt and clutch are critical to address. For deeper insights, consult the [Porsche 944 Turbo workshop manual](https://www.manualslib.com/manual/1172355/Porsche-944-Turbo.html) or [Rennlist forums](https://rennlist.com/forums/).

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