Chrysler Repair: bogs down, engine controller, digit numbers

Question
93 2.5 in 91 acclaim
i'll start car after it's warm car bogs down.

i smell gas and keep playing with pedal to get some power but it will eventually bog down and stalls. i put it in neutral and it starts great and runs for about 200 yards and starts bogging down again till it stalls again. then i quickly start her up and it starts all over again
just installed second hand fuel pump because it was leaking but just before i changed pump i was getting real bad smoke from exhaust.  i smell gas so i'm figuring pump is ok
any ideas?
neil  

Answer
Hi Neil,
Please tell me how it runs when you start from a cold start. Then what happens as you warm up the engine. Then you turn off the engine and what happens after that (how long a time between turning it off and restarting it when what you first described happens)? I assume if you start it immediately it will drive just like it was when you shut it off warm, correct.
One thing you will want to do is check the engine controller for fault codes that may help explain what is wrong. The most useful thing to do would be to try to get the fault codes that may stored in the engine controller memory to readout. Try using the ignition key: turn it "on-off-on-off-on" and leave it "on" (doing this quickly, no longer than 5 seconds). By "on" I mean just the normal position when the engine is running, not the cranking position. The 'check engine'light will remain on when you leave the key in the "on" position with the engine still not running. But then watch the 'check engine' light to begin flashing, then pause, flashing, pause, etc. Count the number of flashes before each pause and keep track of the numbers. Repeat the readout and verify the counts are correct. Then group them in pairs in the order that they came out, thus forming two digit numbers. You may notice that the pause is shorter between the digits of a given number, and longer between the numbers themselves. Then send me a 'follow-up' question telling me the results of your readout. By the way, 55 will be the last number (two groups of 5 flashes each) and that is the code for "end of readout".
I have the troubleshooting manual for the 2.5L and we can look up the possibilities of what is wrong based upon what fault codes you show. When you write back tell me the history of the engine: what engine came with the car, and what was the car that the engine came out that you now have, if you know it.
There is also an essay on fault codes at the site:
http://www.allpar.com/fix/codes.html
which gives the meaning of the code numbers. But then you need to get specific info for what exactly might be the diagnostic tests or parts to replace to complete the repair.
I can help you with that too.
So let me know the answers to these questions.
Roland