i guess i have a contribution for this thread. not happy about it because i'm going to have to outline my first TOTAL strike out on trouble shooting.
back ground, we have a 1997 Saturn SL2, have had it about 12 years. bought it with 75,000 showing, now 223xxx about 75xxx of which are from my wife towing it behind RV's she is delivering.
any way, this car has had regular and complete maint. and never given 1 hint of trouble. until this week.
we took 3 RV's to Hershey, PA. for a show on Monday and started home Tues morning about 9:30 am. drove about 300 miles non stop and decided to take a break and re fill from about 1/4 tank.
tapped the brake to release the cruise and the rpms bottomed and it was dead just that fast. still coasting in the ramp and it fired right back up and drove into the lot, till i touched the brake again and presto, dead.
i nursed it across both Ohio and Indiana by staying off the brakes and restarting after stops.
this week i have replaced the MAP, TPS, IACS, fuel filter, CPS, air filter, plugs , wires, gone thru the whole chassis / body ground wiring system, built a new neg. battery / engine, body ground cable. fogged every inch of hose and manifold connection i can get to and the dumb thing is still at it.
i can start it and it will idle fine all day if you like. i can put it in rev. back out the drive and stop with the brakes , keeps running, drop it in drive, it moves away, drop of of throttle and coast to stop , DIES. all the above and go to neutral before stop, DIES. it always starts right back up, drop it in gear and if you are on a 4 lane limited access road you can drive all day.
you can sit in the drive and go back, stop, still running, go forward, stop, still running. as many times as you like.
my wife says, stick to it, it's a short to something, and while i tend to agree to that possibility, this short is displaying every evidence of being SMARTER THAN ME.
i've spent about 5 hrs. sorting thru web sites and threads about this car and this particular problem. i've followed every suggested path of remedy and still no where.
the first guy that can point me to the solution i'll send $100.00 cash and i ain't playin' !!