No idea to be honest, but i have a 95 Corsica with a similar problem that will turn the Service engine light on after a while of driving highway speeds, or after reaching highway speeds and slowing down again. After getting the code read i found out it was for the EGR valve sensor. Basically meaning that its positioning fine at normal in town driving but not working as it should at higher speeds.
Again i can't assure you this is a positive solution but i would recommend running your car as you would normally get on the highway and then while the light stays on going to AutoZone (They will run service engine soon checks for free) or a mechanic you trust. hope this helps.
why do check engine light comes on
There is a failure in the oxygen sensor heater.
It means that you need to check your engine you dumby. it has check engine in the light name jackass. i should put you in a menatl institution because your freaking stupid as hell.
No, the check engine light comes on when the computer detects a malfunction and sets a code.No, the check engine light comes on when the computer detects a malfunction and sets a code.
The check engine light is the light shaped like an engine, or the light that states Check Engine (Soon). If this light comes on, it is time to see what the issue is with the engine.
The check engine light comes on when the computer detects a malfunction and sets a code.The check engine light comes on when the computer detects a malfunction and sets a code.
Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.Maybe, the check engine light comes on when the computer detects a malfunction and sets a code.
If an check engine light does not come on it is a good thing. When your check engine light comes on, it means you need service done on your vehicle.
I had all sensors replaced in my 03 Trailblazer and the check engine light stiil comes on. Why?
A low battery can cause the electrical system to flash check engine lights
The check engine light comes on at start up for a bulb check. If it stays on with the engine running the computer has detected a malfunction. You need to have it checked for codes.
It is safe to drive you car for at least one mile after the check engine light comes on.