At the end of last month after a long day of driving around the state, when I went to start the car and go home it fired up and about two seconds later just instantly died. trying to start the car again the engine would spin for days but not actually fire up. After trying a handful of times and waiting around 5 minutes it started up and I started moving down the road. After going maybe a 1/4 mile down the road it died again and refused to start up. after trying a couple of times it started up again and I was able to go down the road and stop at a gas station. I filled it up since I was at about 1/4 tank and thought maybe my sending unit was lying to me and I was closer to empty.
The car started up after getting refueled and I left and started out on the highway and headed home. I made it about 40 miles from the gas station when the car died as I was rolling at about 70 down the road, pulled over tried to restart it and eventually started rolling down the road again. Repeat this process about 25 times until I made it to about 30 miles away from home and got a flatbed the rest of the way home.
Now, naturally when the flatbed came the car started right up just fine and was able to get into position no problem. The same thing happened when we made it back to get off of the flatbed. The car wasn't running rough, it would just die like hitting a kill switch and then just refuse to start for a minute or two everytime it happened. I had power to everything when it died, the engine would just stop.
This leads me to believe I'm probably looking at an ICM problem considering these problems happened after a long day of driving around and the engine being at operating temperature for a few hours, coupled with it being about 90 that day. The shop that I took it to doesn't have much experience with the LT1 so they didn't want to do much to it. The pulled I believe a code 41 which, if my memory serves me correctly, is Ignition Control Circuit Open. Which, points to the ICM. The shop believes the problem is the Opti given the advice they were given from someone with "more experience with that engine". I'm not buying it. I just replaced the damn optispark a little over a year and a half and 6,000 miles ago.
I'm going to pull the codes myself to see if there's anything else besides that code 41 (unless of course they did the courtesy of clearing the codes for me...) because if there's not a code 16 or 32 as well as the 41 I'm not inclined to believe it's the optispark, especially since the car was not running rough or misfiring. It was only dying like someone hit a kill switch.
Thoughts on this? Am I right to rule out the Optispark in this case or should I look at that as a possibility as well?
TL;DR Car continuously died while hot, didn't run rough, and set a code 41.
Last edited by AVID; Today at 08:04 AM.
My '94 died on me while driving home...
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