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Unread 06-05-2008   #1 (permalink)
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Default 93 2.3L - starts fine, runs rough, then runs fine - help please

I have a 1993 2.3L LX hatch. When i turn the key the engine starts great, runs awesome. I was told also it was rebuilt 6 months ago (i bought it 2 weeks ago) and can tell that all the fluids have been changed recently and new belts - and new oil last week.

So i start the car and it idles fine. But when i put it in gear to take off and let out on the clutch it bogs pretty bad. But after i rev it a bit it clears up and runs great.

Also, if i rev it when i first start it it works fine as well, so i have found that if when revved it clears up, and once its cleared up it runs fine after that.

I read that there is some sensor that usually messes up in the ignition system that causes similiar things but dont know.

Any thoughts? Thanks in Advance.
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Unread 06-05-2008   #2 (permalink)
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I have a similar problem in my 93 2.3 LX, but mine doesn't clear when I rev it and it's only happened 3 times in the year and a half that I've owned it. It comes and goes it seems. I figured it was something with the dual ignition system, but never bothered to check. It could be your car needs a tune up-cap, rotor, plugs, and wires. Maybe an ignition coil problem. I guess it could be a sensor too, don't know.
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Unread 06-05-2008   #3 (permalink)
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My 1989 2.3L Auto Mustang does the same thing. Starts and runs ok for about 30 seconds but when i get to the stop sign at the end of the road it'll die. I start it up and the engine feels like it flops around in the engine bay.

Then when I gun the engine, let off on the gas, take a corner and try to give it gas it'll hesitate and bog down.

Everything but the TPS-throttle position sensor have been changed.

You guys with your 1993 Mustangs probably need MAF sensors.
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Unread 06-05-2008   #4 (permalink)
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I have an idea of what it could be.

Fuel Filter getting clogged and needing replaced. I did just remember that it started after running the cleaner through the system.

Loose connection in the MAF somewere.

the plugs/ wires/ ect were changed out like 6 months age or so. Its all new stuff from motorcraft.
the MaF also doesnt look to be an issue to me because then it should mess with the engine the whole time and when i stop and such, but its only when i do a cold start and only until i rev it up for a minute.

Also, something that may matter - it only happened when the tank was low on gas. it happened once last week when the tank was at 1/8th and it started this week for the 2 days it was under a 1/3 or so.

I will get gas and see what happens tomarrow.
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Unread 06-05-2008   #5 (permalink)
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does it bog when you go around corners somewhat fast?
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Unread 06-05-2008   #6 (permalink)
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no, just when i start it up, for that first minute. thats it - and onl from a cold start. im gonna change the fuel filter and see what happens
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Unread 06-07-2008   #7 (permalink)
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If the filter is ok, it could be your fuel pump.
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