Chrysler 300 Turbo Failure Signs & Boost Issues, Help!

Recently dealt with nearly identical symptoms on a 2008 Chrysler Sebring diesel. The check engine light combined with whistling noise and power loss pointed straight to the turbocharger system. The root cause turned out to be a damaged pressure sensor wiring harness near the intake manifold, which was sending incorrect readings to the engine control unit. This made the turbocharger behave erratically, causing the whistling sound and poor performance. The jerking during acceleration and high fuel consumption happen because the engine gets incorrect air intake readings, leading to improper fuel mixture. When the pressure sensor fails, the turbocharger cannot regulate boost pressure correctly. This issue requires immediate attention since running the engine with improper air-fuel mixture can damage the turbocharger and other components. In my case, the fix involved replacing the wiring harness and recalibrating the pressure sensor. The repair was relatively straightforward but crucial to prevent more serious engine damage. I suggest having a diagnostic test specifically focused on the turbocharger system and pressure sensor circuit. The symptoms match exactly what happens when these components start failing.

Thanks for sharing those details. I had the exact same problems with my 300 last winter. The check engine light, power loss, and turbo whistling noise got me worried too. A failed boost sensor near the intake manifold was causing all the trouble. My mechanic found some damaged wiring as well. Would you mind sharing what the final repair cost was? Just wondering if I paid too much at 780€ for parts and labor. Also curious if you noticed any other issues popping up after the fix? My turbo system has been running smoothly since, but always good to know what to watch out for.

Got the same repairs done last week actually. The boost pressure sensor issue was resolved by fixing a faulty cable connection near the intake manifold. Total cost was only 95€, mostly labor since they just needed to repair the wiring rather than replace the entire sensor unit. Much cheaper than your repair at 780€, but costs can vary depending on what exactly needed fixing. In my case, catching the wiring problem early prevented damage to the turbocharger and other engine components. Since the fix, the engine light has stayed off and the turbo system works perfectly, no more whistling sounds or power loss issues. The engine maintains proper boost pressure now, and fuel consumption is back to normal. Always worth monitoring the engine light and any unusual sounds, especially around the turbocharger area. Regular checks of the intake manifold and pressure sensor connections can help catch these issues before they become major problems.

Thanks for the input. Finally took my car to a reputable mechanic who specializes in turbo systems. The diagnosis confirmed a boost leak and damaged wiring near the intake manifold. The repair involved replacing both the boost sensor and some corroded wiring harness sections. Total cost came to 780€ which included parts, labor, and a complete system diagnostic. While expensive, it was worth every cent since the car runs perfectly now. No more check engine light, whistling noises are gone, and power delivery is smooth again. Fuel consumption dropped back to normal levels too. The mechanic showed me the old parts and explained how the damaged wiring was causing the turbocharger to malfunction. He also checked the rest of the air intake system to ensure there were no other issues. Really glad I got it fixed before any serious damage occurred to the engine. Going to keep a closer eye on the turbo system maintenance from now on. Regular checks of the boost sensor and intake components seem crucial for preventing similar issues.