Loss of power / Idle shake

ChrisSlicks

If a CEL isn't thrown then it is possible that a "pending" code is stored (something that if the problem continues will trigger a CEL).

You can get your codes read for free at most auto parts store, they are pretty useless at interpreting them but if you take the print out and then search for details at home you can find what you need.

If you want one of your own you can find the basic models for around $50. Check this page out and scroll down for the feature comparison.
Amazon.com: Actron CP9125 PocketScan Code Reader: Automotive

Just make sure you get one that has CAN support (most do).

If you don't get codes often and only have 1 car I would just use the part store service, did it for years.

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