1997 Chrysler Concorde 3.5 Sudden Stall

FINAL UPDATE: After three attempts at trying to repair all the
problems with the engine replacement and keeping the car for a total
of three weeks to try to solve these problems, the chief mechanic kept
saying, "It runs great!" The engine still ran rough, there was a loud
rattle in the dash when in drive at idle and the engine would surge at
times at highway speeds. And the check engine light was now on, so it
failed the state inspection.

I decided to take the car to another auto shop and they found a few
things:

One leaking injector - gas leaking on engine
Injector O-rings had not been replaced
Throttle cable not connected properly - mounting bolt broken
Negative battery cable not attached properly to ground
Numerous cracked and rotten air hoses had not been replaced

Yet another repair cost. This time $850. At least the car is running
good now. This second auto shop took four days to find all the
problems. The guys who replaced the engine took three weeks and never
found any of the above problems... "Uh, it runs great! Yeah, runs
great..! No problems!"

Lesson learned... Do your research on auto shops before getting any
major repairs done. Or, better yet, don't replace the engine - just
buy a new car... Happy Driving...

 

Lesson noted.