Check Engine light and Ignition switch

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Apr 27, 2003 | 09:13 PM

sandman1098

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Check Engine light and Ignition switch

Is the Check Engine ligh supposed to come on when you turn on the ignition (just before you crank the car)? Mine does not, but I know the bulb is working though...... Could that mean that something is wrong with my ECU?

Apr 27, 2003 | 09:42 PM

Miasma

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Joined: May 2002

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uhh... if nothing is moving in the engine, all systems are not go, and only when all systems are in working order will the CEL go off. Thats like saying, my oil pressure light is on before i start the car and there is any oil pressure! whats wrong?!

Apr 28, 2003 | 05:45 AM

njmaxseltd

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Re: Check Engine light and Ignition switch

Quote:

Originally posted by sandman1098
Is the Check Engine ligh supposed to come on when you turn on the ignition (just before you crank the car)? Mine does not, but I know the bulb is working though......

How do you know that the bulb is OK if the light never comes on? And yes, it's supposed to come on when the key is in the on position just before you start your car.

Apr 28, 2003 | 05:56 AM

sandman1098

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Joined: Mar 2003

Posts: 505

The light comes on sometimes after I crank the engine..... I also took the instrument cluster apart to check the bulb.....

Is this any indication of a bad ECU?