Encore Engine Stumbles: Bad Crankshaft Sensor Alert

Had similar symptoms with a 2015 Buick Envision. The rough running and poor fuel economy turned out to be a failing crank sensor that was sending incorrect reference values to the ECU. The engine timing was getting thrown off because the computer wasnt receiving accurate crankshaft position data. This affected the camshaft timing and overall engine synchronization. The sluggish performance happens because the engine cant optimize fuel injection and spark timing without proper sensor input. The fix required replacing the crankshaft position sensor and verifying the timing chain was still within spec. This is a serious issue since continued driving can potentially cause engine damage if the timing gets too far off. The diagnostic process involved checking sensor voltage readings against factory specifications. Would recommend getting it checked soon, ideally at a shop that specializes in engine management systems. The symptoms match classic crank sensor failure, rough running, poor power, and high fuel consumption are telltale signs when the engine loses proper synchronization. Worth getting a second opinion, but dont wait too long given the potential for more serious issues if left unaddressed. Make sure they fully verify sensor operation after replacement.

Thanks for sharing your experience. My Encore had nearly identical issues last year, the poor performance and fuel economy were definitely concerning. After reading your post, I am wondering how much the sensor replacement and diagnostic work ended up costing you? Also curious if youve had any other problems since the repair was done? I am trying to budget for this fix and want to make sure the timing chain doesnt need attention as well.

The repair worked out great, no engine performance issues since getting the faulty crankshaft sensor replaced. The reading between crankshaft and camshaft reference signals is now perfectly synced according to the diagnostic readout. The total bill came to 340 for parts and labor, which included a full engine synchronization check after installing the new sensor. Money well spent considering how the engine runs smoothly now with normal fuel consumption. The timing chain was inspected and showed no wear issues, so no additional repairs were needed there. A proper diagnosis and sensor replacement should resolve the misfire and performance problems completely. Just make sure the shop verifies all timing-related readings are within spec after the repair. When the crankshaft position sensor fails it can seem like a bigger issue, but its usually a straightforward fix once properly diagnosed. The key is not waiting too long once these symptoms appear, as continued driving with incorrect timing signals can potentially cause more expensive engine damage down the road.

I took your advice and finally got my Encore fixed last week. Found a well-reviewed import specialist who properly diagnosed the crankshaft sensor issue. The repair cost was reasonable at 375 total, slightly more than you paid but included a thorough timing belt inspection. The difference in performance is like night and day. No more engine light, the sluggish acceleration is gone, and fuel economy is back to normal. They showed me the diagnostic readings before and after, the new crank sensor restored proper timing signals between the crankshaft and camshaft. Really glad I got it taken care of before any major engine damage occurred. The mechanic was thorough and explained everything clearly. The timing chain looked good too, so no extra repairs needed. Thanks again for helping point me in the right direction with this issue.