Throttle Body Issue Causes Engine Limp Mode and Power Loss

Having dealt with similar symptoms on my Chrysler 300 2008, I can share some relevant experience. The symptoms you describe match exactly what happened with my car, reduced power, check engine light, limp mode activation, and rough idling. Initially thought it was the throttle body affecting air flow, but diagnostic testing revealed it was actually the accelerator pedal module causing the issues. The repair involved replacing the electronic accelerator pedal assembly, which cost 265€ including labor. After replacement, all issues were resolved, no more limp mode, smooth acceleration, and normal engine performance returned. Before going to a workshop, you could check: Clean the air intake system, Check for loose connections around the accelerator pedal, Look for visible damage to wiring, Monitor if symptoms get worse in wet conditions To provide more specific guidance, could you share: Are you getting any specific error codes? Does the problem occur more during cold starts? Have you noticed any changes in fuel consumption? Any recent repairs or maintenance performed?

My Sebring has 51206 KM and received service last month, but the issue persists. Getting error code P2135 now, which points to a throttle sensor issue. The response delay and rough idle are worse during cold starts, and fuel consumption has increased by about 25%. After checking the air intake and connections as suggested, I noticed the throttle body appears quite dirty. This could explain the erratic throttle response. Will try cleaning it first before considering a full replacement. Thanks for the detailed advice about the pedal assembly, will keep that in mind if cleaning does not resolve the check engine warning.

The error code P2135 is definitely significant, it shows the throttle position sensors are mismatched, which explains the response delay and rough idle issues you are experiencing. On my Chrysler 300, I initially tried cleaning the throttle body too, but it only provided temporary relief. While cleaning might help temporarily with air flow issues, in my experience, the sensor mismatch often indicates a failing throttle body unit. My car showed similar symptoms, worse performance on cold starts and increased fuel consumption, even after a thorough cleaning. Since your Sebring has relatively low mileage, you might want to check if the throttle body is still under extended warranty. The complete throttle body replacement on my vehicle cost around 450€, but solved all issues permanently, including: Eliminated the limp mode activation, Restored normal throttle response, Fixed the rough idle, Returned fuel efficiency to normal If you proceed with cleaning first, make sure to: Use proper throttle body cleaner, Clean both the butterfly valve and housing, Check the surrounding sensors, Clear the error codes afterward Let us know how the cleaning works out, if symptoms persist, you likely need the complete throttle body replacement like I did.

Thanks for all the feedback on the throttle sensor issue. The throttle body cleaning made a small difference, idle is slightly smoother but the check engine light and response delay are still there. Looks like I will need to go ahead with the full replacement to properly fix it. Got a quote from a local shop for 475€ for the new throttle body plus labor. A bit more than I hoped but better than continuing with poor performance and high fuel consumption. Will schedule the repair next week and report back on whether it resolves all the air intake and acceleration problems like it did for your Chrysler. At least now I know what to expect from the repair process and can be confident this should fix the recurring limp mode issue. Thanks again for helping diagnose this, saved me from trying other repairs that likely would not have addressed the root cause.