What would cause an emission light to come on?

AllanD said:

The Emmissions is actually an emissions maintainanc reminder.

It is in no way connected to any emissions component.

It is simply a light turned on by a timer that's mounted above the glove box opening.

The unit is called "Infered Mileage Sensor"

There is a reset button, but the reset is like the function buttons on a factlry clock it's a conductive rubber puch that completes a circuit on the internal circuit board.
Unfortunatly over time exposure to air hardens and oxidizes the rubber and the contacts and they won't conduct anymore and thus cannot reset the unit.

I actually took mine apart and shorted the circuit points wiht a pece of copper the the f'er stillwouldn't reset.

My solution? I remobed the internal circuit board and tossed it in the trash.
then I reinstalled the housing and reconnected the wire to it...

Why? because otherwise the dangling wire interferes with opening and closing the glovebox.

AD

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BlackBII said:

Correct, nothing prompted the light to come on, aside from a timer.

"Emissions" could have many definitions...first one that comes to mind is what is emitted from the engine in terms of harmful gasses..

In this case, it's referring to components like the EGR system, Charcoal canister, Air Pump, Catalytic converter...

There are many things that help an engine and it's "emissions", or, the amount of harmful gas that is emitted from the exhaust

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Shannon said:

Thanks!

Could "old" gas be a problem? I know that sounds like a DUH question, but...... I have had this truck for going on 6 years now, and recently acquired another vehicle leaving this one neglected and hardly driven.

When I say, "neglected" I mean that I hardly drive it, BUT before I do, I make sure all fluids are where they need to be.

It gets driven maybe once every 2 weeks. I know, I know, it is horrible on a vehicle to let it sit. I should be ashamed because that truck has been SO good to me. I just love that truck, and I know that I should drive it more often.....

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BlackBII said:

How old is this gas?

Good to hear that you love the truck.

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