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No, the engine light isn't on. Last time it was, was back in January - took it by Autozone and had them pull the code, and it was a misfire due to a crappy sparkplug.

Forgive me, what is a CEL?

I've around 135,000 miles on my car. I'm wondering if I need to replace the fuel injectors......am I getting ethanol at the pump now?

Help?

I read in another fuel economy thread where someone suggested making sure that the Overdrive is still on. What is 'Overdrive', and how does it affect fuel economy? I'm assuming that since the light on the dash comes on when it's off, that Overdrive is meant to usually be on? I know where...

I've changed the air filter, fuel filter, and plugs/wires. I've Sea-Foamed the fuel system (via the gas tank) and the cylinders (via the intake vacuum hose). Tires are correct size and inflation. Still, fuel economy is getting *ridiculously* worse. What else is there to do?????

My fuel economy on my '99 has progressively gotten worse over the last two years, and I've seen a change (for the worse) in the last three weeks. Next weekend, I'm changing the air filter along with Seafoaming the upper end of the engine - would it be helpful to run some through the gas...

How does one do that? I'm afraid my '99 (with 130,000 miles on it) needs a re-build (the people who had it before me didn't take too good of care of it). I'm considering getting a re-built short block assembly (since I'll only have two days at my friend's garage to do it), and cleaning my...

I'm also considering, since I'll be on limited time to make the re-build, to try and purchase a re-machined short block assembly, and use my existing headers, heads, intake, etc. I read on another post where someone suggested to 'seafoam' the car - how exactly is that done? I don't want to...

The engine has about 129,500 miles on it.

I've the '99 V6, running decent (other than rough idling, a slow oil leak, spark knock, and the fuel economy gone to Hell). I originally had intentions for it to be my project car, then thought of trading it in for a truck - but I've decided to simply keep it, and put it back in near-new running...

Well, here's the story. Changed the plugs/wires back in February, around July had trouble with the #3 cylinder mis-firing (turns out the wire t that plug was leaning against a 'hot pipe', and burned a hole right through it. Changed the wire, then the plug began to foul, with both the 'spark...

I've noticed a strange noise lately, and it's gotten a bit louder - when I accelerate, there's this strange rattling noise coming from under the car, around the engine bay area (I can hear it clearly through the dash/floorboards when the radio is off). It only does it in drive, never on a bumpy...

So I grabbed a screwdriver from the toolbox in the trunk (while still at work), removed the air cleaner assembly, and found the obvious problem - the wire to cylinder #3 had been resting against some sort of horizontal pipe, which had burned a hole right through it. So I got a new set of wires...

Left work this morning to run home, '99 V6 was fine. Ran inside my place, came back out, and I noticed that the car seemed to shudder a bit when accelerating....got on the highway, and the 'Check Engine' light began flashing, and the engine seemed to 'drag' a bit, losing power (especially at...

Forgive my ignorance, but what is a <b>tailshaft</b>?

Yes!!!!! THANK YOU!!!

Was in Wal-Mart weekend before last, getting some cleaning supplies, when I stopped by the magazine section. Picked up a Mustang-specific mag (I wanna say it was MM&FF, but I cannot be sure). In it there was an article, sort of a 'top 10' (or something to that affect). Had a bunch of 4.6's...

<b>Can I use the X-pipe with long headers, or will I have to use shorty headers? And how can I determine what headers go with which X-pipe, and which cat-back, etc? I greatly appreciate all of your responses; this place continues to prove itself as an invaluable resource for Mustang owners.</b>

Thanks for the advice; to say it is greatly appreciated, is an understatement. As for the direction I'm headed in - simply put, I want to have the meanest (non-racing) V6 Mustang in the Southeast - I like the challenge of taking something that's supposed to be 'less' and making it more than...