Welcome! I'm Ron Z! I will do my best to answer all of your questions. For easy access to this thread, bookmark it now! Please read everything!

---

When the Check Engine light comes on, this is the on-board computer's way of telling you it sees a problem in one of the monitored systems. Unfortunately, there are literally 100's of parts and sensors monitored in various systems, and to take a "guess" as to which part/sensor in which system is faulty, is virtually impossible. However, if you are not experiencing any drivability issues such as skipping, stalling, shifting problems, etc, then more than likely, the problem is going to lie in the EVAP (emissions) system. Very commonly, this could be a faulty, loose or missing fuel cap or even putting fuel in while the vehicle is running. Check the cap for any cracks in the rubber o-ring on the underside. Check the fuel filler neck for any signs of chips or debris. Check under the vehicle, around the area of the fuel tank and the EVAP canister looking for any vacuum lines that have dry-rot cracks, holes or loose/missing connections. If these all check out, then the best thing to do at this point is to have the "p-codes" read from the on-board computer. These p-codes are what is used as a "starting point" for the diagnosis and will tell which part/sensor in which system has the fault. There isn't a Mechanic on the planet that can tell you what is wrong with the vehicle just by "looking" at the Engine Light. Every single Mechanic's first course of action WILL be to obtain the p-codes. Once you get these p-codes you can more accurately and efficiently diagnose the problem and then make the repair. You can have these p-codes read FREE (except in California) at any local "big chain" part store (ie. AutoZone, PepBoys, Advanced, etc). If you still need help after retrieving the codes, you can bring them here, and any of our Techs can walk you through the diagnostic procedure, and then even help you make the repair if you feel confident enough to try.


The belts or belt tensioner will not set an Engine Light, as they are not monitored by the on-board computer (however, if something were disrupted during this procedure, that very well may set the light. Only one way to know "for sure" where the problem lies- with a p-code). In this case, I believe this is just unfortunate timing. Like I say, if there is no drivability, performance, or shifting symptoms, more than likely, an emissions control problem. Perfectly safe to drive the vehicle, however, getting the Free code scan should be a top priority, if for nothing else, peace of mind.

I'm sorry I did not meet your expectations, and you have decided to give a negative, low rating. Unfortunately, as I stated, there isn't a mechanic on the planet that can simply look at the Check Engine light on, and say "Oh, it's this..." - if any of us could do that, we'd be ga-jillionaires! LOL! Every mechanics first course of action WILL be to retrieve those diagnostic trouble codes (p-codes), it's just how the process works. If you can have these p-codes read, and bring them here to me, I'm certain I can help you pinpoint hte actual problem, and make the correct repair. Without a p-code, we're just "guessing" and that will get costly and fustrating very quickly. Again, sorry I did not meet your expectation, but, some things are just not cut and dry, especially when there are no symptoms. There is no magic way to solve a vehcile problem, and diagnostic flow is the only way to solve problems.