Dude my check engine light had been on on my 96 Ranger for a decade or so. I replaced the spark plugs once. A couple of new batteries and a few other little tweaks here and their. Pretty regular on the oil changes. I think the head gasket leaks. I see antifreeze trails on the block. 4.0 I'm thinking the aluminum head may be warped. I dunno. I add antifreeze maybe twice a year. It takes almost the whole gallon. I'm pretty sure it's always low. Or dry. I've got maybe 30-40k on the air filter and probably more than a 100k on the fuel filter.
Anyway. I'm pretty sure the check engine fault are the pre and post oxy sensors. That's like $70 a piece for 4 of them on a 4.0 so eff that noise. It still starts even in the cold by simply turning the key.
The situation. So the check engine light finally went out maybe 6 months ago. I didn't do nothing? Do you think I should replace the check engine light? I really don't want to put $300 worth of oxygen sensors on it. No mech other than myself has ever touched this thing.
Thanks bro.
Peace and love.
well, if you aren't in a "smog" state you could do nothing, but it sorta isn't the wisest..
Car problems are like dental/health/IRS issues..
They get only more expensive and more painful as time goes..
Also with the light burned out you won't know if you have other issues going on.
Annnd furthermore if they are indeed o2 sensors you want to replace those before they burn out your catalysts (four of them $$$) so if your o2s aren't working they will cause your car to run failsafe... which means RICH... which means catalyst increased temps..
you should do your fuel filter every 20k
Can burn out the fuel pump if it gets clogged.
Also if your oil cap has greenish whitish froth on the underside of it, that's where the coolant is going.
OR it could be getting consumed, and damaging your o2 sensors.
ethylene glycol is bad for o2 sensors