Having problems with your 1999 Toyota 4Runner ?
I have a engine light my conern is about the emssion problems and the sensors ........... itook one time to the mechanic and he seid it was something about the catalyctic conver something like that
Sounds like a O2 sensor is triggering a code. If the sensor got wet it could cause a accidental trouble code to come on. The first thing you should do is to unplug the battery, which should turn the Check Engine light off, if it comes back on then have a mechanic diagnose the problem and replace the faulty part. If it stays off, then be glad you didn't fix a problem that didn't exist.
Repair Help & Product Troubleshooting for 1999 Toyota 4Runner
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