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Re: Why is there the check engine light?
The check engine light only comes on when the computer detects that there is something wrong in the operation of the vehicle. Take the car to an autozone, advanced autoparts, pep boys, car quest; they will run a ODB2 test on the car and tell you exactly what wrong. Plus the diagnois is free!
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this could be just a loose or worn alternator belt, also could be alternator brushes about to fail, with a multi meter start engine and set meter to 20v DC and put relevant prongs to correct battery terminals it should read about 13v to 14v, 12v up over is ok but should be above 13 on tick over and not much or at all higher than 14v, keep meter on battery and rev engine to make sure the charge rate doesnt fall below 12/13volts when engine under strain as this will effect battery current while driving etc. especially at night when using lights, this might be ok now but it will get worse so dont neglect problem as you dont want to get stuck in middle of nowhere one night when out driving, car will slowly start to lose power as it can only run on battery for approx an houre, its running on battery not alternator everytime battery icon shows whilst engine is running and over time this will also effect battery condition.
Hi, that's possible but first check the ECM fuse and use a test light to check for power to the injectors on the red and white wires. The computer uses a number of sensor inputs to calculate the injector signals required. If these signals are not available, the computer cannot send the appropriate injection metering signal and will usually set the engine light. Is the engine light on?
The oil light is reset by the tech on each service. It will not go off by itself. As far as the check engine light goes you now have a code stored and you will need to get it before we can begin to diagnose. Only thing you can do is make sure the gas cap is on and the seal is no cracked or distorted. This could set a code