I have a 1995 rodeo 2.6lt,idles and takes off fine but when you get to about 2000rpm its like it chokes and surges, I've heard they can have choke issues.

SOURCE: 1999 daewoo lanos

try disconnecting vacuum advance tube from the distributor,block it off and see how the car reacts.you may have to do it to both if it has 2 Could also have a vacuum leak somewhere around the intake system

SOURCE: 2000 dodge neon idles fine but when in gear it

Start the car in park when it is running go to reverse back up 10-15 ft then go to drive if it goes forward but won't shift out of 1st gear then it is a trans mision problem not a fuel delivery problem.

If you have an auto trans, and it is stuck in 1st or 2nd gear here is a link that might help there are 13 parts to the video. http://www.youtube.com/watch?v=46VeVdRdkpc&playnext=1&playnext_from=QL

SOURCE: 1985 ford F150 is running very rich. (choke is

When you say it's destroying the air filter---do you mean it's all sooted up ?? I am assuming that what you mean.
Try disconnecting the vacuum line at the egr valve and see if that helps.
But it sounds more like a plugged up exhaust system.Try disconnecting or looosing the flange before the cataylic convertor and then see how it runs.

SOURCE: my ford f150 4.9 inline 6 stalls when you

What engine code is stored in the computer? You may have a bad TPS (throttle postioning sensor), or a bad O2 sensor. Auto Zone can retrieve the code for you, and tell you what sensor it is related to.

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Have you checked the primary gauze filter that is part of the fuel pump located in the fuel tank. You may have got a batch of dirty fuel that has clogged this filter which would cause fuel starvation when demand increases.