Buick Rendezvous power loss and backfiring issue with potential lower engine problems on Buick Rendezvous

Some Buick Rendezvous owners report experiencing power loss and backfiring, which may stem from several lower engine problems. These issues can be attributed to improper engine timing, bad spark plugs, an engine running rich, or faulty plug wires. Additionally, common causes of engine power loss include problems with the TAC system or the Throttle Position Sensor. Owners are advised to follow diagnostic procedures and promptly address any identified issues to maintain optimal engine performance and reliability. It is also crucial to consider factors such as fuel quality, sensor functionality, and overall engine health to effectively pinpoint and resolve the underlying problems.