[R_I_PT]

SO
The car began surging again.
I called Chrysler in India then got connected to Michigan. I documented what has happened lately.
They told me they can't do anything til I get a diagnosis from Chrysler if something is REALLY wrong with my car. Which will cost a million dollars an hour for their cruddy diagnosis.

Here's my list of issues:
- Rack and pinion replaced at 43K miles courtesy of Chrysler
- A/C leak fixed and paid by dealer because they scratched and dinged my car, which they fixed also.
- Spark plugs replaced at 43K in addition to MAJOR service, which included every fluid flush possible, throttle body service, plus more
- Serpetine belt replaced around 49K
- Windshield wiper cord broke
- 58K miles Spark plus diagnosed as bad and wires bad
- 58K miles MAP sensor cracked
- 58k Miles coil pack replaced along with new wires plugs and throttle body service. Coil pack hadn't been found by Chrysler, but my indy mechanic.
- Steering wheel vibrates violently at 60mph+; both the dealer and independent mechanic diagnosed it as a bad tire even though this symptom existed on 2 different sets of tires.
- Battery replaced at 25k miles by dealer under warranty
Car still surging, stalled.

I added Mopar, dealer installed Cold Air Intake, and added after market, no muffler exhaust.

Chrysler now says it could be my Throttle Position Sensor.
Chrysler in Michigan requires me to take it to the dealer to get a furthur diagnosis of the problem, in order for me to request that Chrylser pay for it.
Problem is, I don't want to keep spending the $$ for diagnosis, repair and then something else breaks.

Can anyone steer me in the right direction on what to request from the dealer when I take it in?