
Originally Posted by
Polnareff
Yep, the check engine light is always on. The area around the exhaust seems fine, but the problem here is, I can't afford to get the car fixed currently. I'm doing my damnedest to save to get it fixed though. And yeah, the car is pretty sluggish. I have to push the pedal down to the floor to even begin to get the car over a hill.
Two of my friends have much newer Neons (one has an '08, the other an '09) with some pretty bad problems akin to the ones mine is having. It's just strange and funny to see.
Well, with out knowing what engine code/codes the thing is giving you it's all speculation, but my guess is that you have a faulty o2 sensor. The o2 sensor monitors exhaust emissions, and among other things, helps the engine computer maintain a proper air/fuel mixture for the engine. If the o2 is malfunctioning, the ECU (engine computer) might be telling the car to burn way more fuel than it really needs. This would obviously harm gas mileage, cause the car to become sluggish, and since it's no longer burning a clean mixture possibly cause the catalytic converter to fail.
Once the catalytic converter fails, the exhaust gases aren't cleaned properly, the o2 sensor gets an even MORE erroneous exhaust gas reading, and the ECU gives an even more improper air/fuel mixture. Plus a failed catalytic converter obstructs the flow of exhaust which makes the car lose power, and you guessed it, lose mpg's. It's like a perfect circle of crap.
But car's are complex little beasts, and it could be something completely different. A place like Advance Auto will read your engine code for free. While that won't give you a definite idea for a fix, it will at least get you pointed in the right direction. Free is good.