1997 neon drive problems when warmed up

For what reason did you replace all that for? Why not have someone with a good scan tool check it out. You have to start with the basics!!

Glenn Beasley Chrysler Tech

The basics on that vehicle would be checking fuel pressure, spark, compression and check all sensor values.Why would you replace the coil pack and fuel pump if the basic check showed good? Have the system tested for fault codes (and clear them) after all the ones you put in by poking around, then monitor the sensors with a scan tool.

Glenn Beasley Chrysler Tech

any

Obviously if this vehicle is running as bad as you say there are fault codes getting ready to show up, take it out and run it for about 10 miles and recheck to see what fault codes have been set

The code is being set because the 02 sensor is detecting not enough oxygen at the sensor (thus setting a rich fault)!!!!!Have you checked to see what the engine vacuum is? (basic check being throwing parts at it) It should be at least 17 inches of vacuum at idle. If not. The map sensor will tell the computer that the engine is under a load and to give more fuel....and giving more fuel at idle is not good!! You could have a plugged cat-converter, worn out engine, injector stuck,map sensor electrical/vacuum problem, fuel pressure regulator (once again Basic test.What was fuel pressure reading at idle?) You said you did the timing belt 2 months ago......is this when the problem started or did you do the belt to try and fix this problem?

Glenn Beasley Chrysler Tech

Good luck

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fuel....and

And that is where the basic engine testing would have found it instead of tossing parts at it. A simple vacuum test