Caravan, 3.0 L, engine misfire

I have a 1999 Dodge Caravan with a 3.0 L. The engine is missing under load, and I get a report of misfire in cylinder 1 when I read the codes. Garage
has tested everything: spark plugs, injector sugnals, fuel pressure. I did a tune up (wires, rotor, dist. cap) no help. Had the fuel system cleaned too, no help. Swapped plugs around, fault stays on cylinder 1. Just recently I have started to get a MAF sensor fault (reads high impedance) and a multiple misfire code too.
Garage doens't have a clue, other than possibly a bad injector for the missing. Anyone have some other things I could test or read through ODB II? I have a scanner.
Any help appreciated.
Steve
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load,
did
and
II?
You need to perform a compression test, If it is low you can try to decarbonize the combustion system with a product that Chrysler sells, Make sure you are using 87 octane fuel also. Glenn Beasley Chrysler Tech
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On Sat, 19 Mar 2005 16:18:30 -0500, "maxpower"

Also possible you've got a worn or loose valve guide. Problem is not as common as in the past, but apparently it still happens.
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Kind of what Max power said...do a compresion test. Now, if the compression is low then you would have to do a wet test, meaning that you squirt some oil into the combustion chamber and check the compresion again. if the pressure is higher then that means you have bad piston rings, but if the pressure doesn't change than maybe perhaps your valves are bad. Worst case scenario: engine overhaul.....very costly and depending on how you feel about it if you think it's worth it then go for it, but if not then its just one of those things that u learn to live with.
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Garage had done the compression test and it was fine.
Any chance it could be a bad injector? What about the fuel filter, could that cause it?

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On Wed, 23 Mar 2005 10:59:24 GMT, "Steve"

The guides in my 88 NewYorker were so bad it's a wonder the valves didn't come up through the guides, and the compression still checked out fine - but it didn't run worth a hill of beans, and used a lot of oil (and did not smoke)
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Those Mitsi engines wear the guides real bad. New guides and a valve job is a must after about 100k miles. problem used to be worse but they have improved the heads and they are better now.

load,
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and
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