http://www.2carpros.com/articles/service-engine-soon-or-check-engine-light-on-or-flashing

Have the computer scanned for code/s-you have a problem within the engine management system that caused the CEL to turn on-This is your starting point of diagnosis,finding out what's going on.

Answered by rasmataz
68 questions asked

Other forums I've looked at suggest possibly bad speed sensors in transmission or something to that effect. Thoughts?

Response from hodgined
1 question asked

The two most common causes for Tucson stumbling/stalling (that I've seen) are corroded fuel rails and faulty throttle position sensors. On the 2005 models they had aluminum fuel rails that were prone to oxidizing and causing stumbling/stalling issues. The TPS sensors would fail without setting a check engine light but were distinguished by the vehicle stalling when coming to a stop. With 68k you should also suspect the plugs/ignition system.

Answered by hyundaitech
0 questions asked