2001 Chrysler LHS Engine problems

2001 Chrysler lhs. The vehicle has about 100,000 miles on the odometer. Issue #1 the vehicle dies suddenly while driving. This is a random occurrence, but very unsafe. I intend to contact chrysler about this issue, but no safety recalls have been made for this vehicle. Issue #2 vehicle engine surges suddenly when stopped while the driver has their foot on the brake and not touching the accelerator at all. The idle jumps around anywhere from 1,000 - 2000 rpm and then settles back down to normal idle on it's own after a few seconds. This is a random occurrence, but could be a safety issue if the brakes do not hold. *Tr

2.7 Engine 2001 intrepid without warning the timing chain went and the repair shop said the motor is full of sludge even with the regular oil changes 5-30 oil .Chrysler told the shop that there was a problem with these engines and they're a piece of crap. *Tr