Check Engine Light Unraveled Vehicle Operates Perfectly Amidst Warning

If the Check Engine light doesn't come on in the run position it means the computer failed the self-test mode and there's a problem with the computer. It's been a year and a half since after he disabled the misfire codes, and my car is running fine. I have a 91oct tune as well but I almost ... Faulty sensor – There are a variety of sensors on your vehicle that can fail, and one of them may be the cause of your check engine light. The ... My car runs fine and seems to shift fine in automatic mode. For some ... but not much but the shifting seems rather delayed probably bc ... The battery supplies electrical power to run the vehicle, but it also controls and stabilizes system voltage. Whenever you're diagnosing a "Check Engine" light, ... Low oil pressure is a common cause of a check engine light turning on, and it can seriously interfere with your car's performance. In many cases, it means that you'll need to visit the car dealer to repair the issue and turn off the light. Check engine lights come in orange, ... A loose, missing or damaged gas cap can cause the light to turn on because the vehicle's onboard computer recognizes that it is losing pressure in the gas tank. If they are good, it is probably your harness. Buy some contact cleaner & a tube of Ox-gard from any home improvement store. They can be found in the electrical ... If your car is running like normal, a broken O2 sensor is the likely culprit. This may mean that the car is actually running normally, but since the engine ...