valve and cooler faults
Risk: HighThe issue to check is (exhaust gas recirculation, which sends some exhaust gas back through the engine) valve/cooler failure. Soot deposits and or cooler faults can cause loss of power. Early (diesel engine family code) cars are well represented in reports. That does not establish every later failure was caused by the emissions update.
- Glow-plug or engine light
- Hesitation
- Limp mode (reduced-power safety mode)
