It will usually come on. The speed sensor on my transmission died and it displayed the check engine light.
I had all sensors replaced in my 03 Trailblazer and the check engine light stiil comes on. Why?
It is important to know the causes behind warning lights showing up on a car. The check engine light comes on after a certain speed because there is a problem with fuel, electricity, or oil of the engine after that speed, that is causing issues.
Replace the faulty speed sensor and the light will reset itself after a short drive.
for the check engine light go to autozone and they will diagnose your engine for free as for the speedometer you will proobably have to replace the speed sensor
It could
The idle speed is NOT adjustable it is computer controled. Is the check engine light on ? if so then you MUST have the engine scanned with an engine scanner to see what is wrong.
Check for codes if you have a check engine light illuminating.
It should...
Yes
I think you need a speed sensor
Trouble code P0320 means:Ignition/distibutor engine speed input circuit malfunction