F
f18_builder
Guest
1996 CE Vortech SC 31,000 miles automatic --
In the last weeks my vette has tried to die a few times, but has run great over all. This weekend, after 2 hours at highway speeds it died in the middle of the highway at 75 mph. I coasted off the road, and tried to start it... It would start, run great for 10 -15 seconds, idle perfectly, then die, just as if you turned the key off. It did this time and time again. After 30 minutes, it ran long enough for me to drive about 100 yards, and died the same way.
As a good GM owner, I had my scan tool in the armrest. The code was an odbii p1371. Which the scan tool indicates as a Man. Ign. Control.... I also saw it described as a DI Low Resolution Circuit. After a tow and a nights cooling off, the service tech at chevrolet could get it to act up when he drove it. After letting it idle for sometime it finally died. He had a fuel pressure gage on the rails. I had good pressure. I thought originally the problem was in the fuel delivery. The car has a Vortech SC on it, and an additional fuel pump. I thought one might be going out. Regardless.
The engine also has an MSD 6 ignition on it. We bypassed the box to see if it was the problem. Same thing happened (run perfect for ten seconds, die). We pulled a plug wire... we had spark, until it died. We had a constant power and a driver to the coil. We did check the spark going to the dist. The service guy believed it was the coil. We replaced the coil, I paid the bill, and took off down the street. The car ran perfect. Excellent accel. I was happy as a clam for the first 100 yards, then dead. Driving 20 feet at a time I got the car back to the dealer.
Later that day the manager called and said the leading theory was that it was the ignition control module. As I was getting off the phone the tech came over and told the manager he now thought it was the computer, b/c the engine was now throwing all kinds of codes, and turning on accessories, etc. I did notice that the air pump would start while we were working on the car before, but I don't know if that is normal.
The computer seems like an odd choice. There is a corrolation between the engine being hot and the problem occurring. We were seeing the symptoms while the car was idling, with the hood up on a cool morning. Not exactly the conditions for the computer to be getting hot. Obviously, it could be generating heat internal to the computer, but it seems like effects would show up sooner.
I would really appreciate any help.
In the last weeks my vette has tried to die a few times, but has run great over all. This weekend, after 2 hours at highway speeds it died in the middle of the highway at 75 mph. I coasted off the road, and tried to start it... It would start, run great for 10 -15 seconds, idle perfectly, then die, just as if you turned the key off. It did this time and time again. After 30 minutes, it ran long enough for me to drive about 100 yards, and died the same way.
As a good GM owner, I had my scan tool in the armrest. The code was an odbii p1371. Which the scan tool indicates as a Man. Ign. Control.... I also saw it described as a DI Low Resolution Circuit. After a tow and a nights cooling off, the service tech at chevrolet could get it to act up when he drove it. After letting it idle for sometime it finally died. He had a fuel pressure gage on the rails. I had good pressure. I thought originally the problem was in the fuel delivery. The car has a Vortech SC on it, and an additional fuel pump. I thought one might be going out. Regardless.
The engine also has an MSD 6 ignition on it. We bypassed the box to see if it was the problem. Same thing happened (run perfect for ten seconds, die). We pulled a plug wire... we had spark, until it died. We had a constant power and a driver to the coil. We did check the spark going to the dist. The service guy believed it was the coil. We replaced the coil, I paid the bill, and took off down the street. The car ran perfect. Excellent accel. I was happy as a clam for the first 100 yards, then dead. Driving 20 feet at a time I got the car back to the dealer.
Later that day the manager called and said the leading theory was that it was the ignition control module. As I was getting off the phone the tech came over and told the manager he now thought it was the computer, b/c the engine was now throwing all kinds of codes, and turning on accessories, etc. I did notice that the air pump would start while we were working on the car before, but I don't know if that is normal.
The computer seems like an odd choice. There is a corrolation between the engine being hot and the problem occurring. We were seeing the symptoms while the car was idling, with the hood up on a cool morning. Not exactly the conditions for the computer to be getting hot. Obviously, it could be generating heat internal to the computer, but it seems like effects would show up sooner.
I would really appreciate any help.
