My car has just developed a problem. I can be driving, idling, anything, then all of a sudden, the tach drops to 0 and the engine stalls. If I'm moving, I can turn the key off and then on again and let the clutch out, or just restart it, and it's fine. I was thinking the ignition switch might be going bad, but I do not lose any other electrical at all. Plus, today I was driving and decided to turn the key off while in gear and the tach does not drop to zero. The problem is happening more frequently now.
I've checked the spark with the paper clip trick and it's fine. I've checked the ohm reading on the magnetic pickup and it's within spec. All grounds appear to be OK. I'm at a loss as to what to look for.
The car is a new-to-me Factory Five Cobra that only has 1,600 miles on it, but is 6 years old. It's a 347 cid with a Holley, mechanical fuel pump.
MSD Digital 6AL box, MSD 8598 distributor. Coil Blaster 2. I actually replaced it last month because the coil died on me. Totally different symptoms: car stumbled when I first started it, then it dies and wouldn't restart. Coil did not have continuity. New coil fixed it right up.
Cap, rotor and plugs are new. Car runs great when it's running.
The tach is from Speedhut.
I hate to point to the little red box, so please advise on how to troubleshoot. As I said, the entire car looks brand new, so no rusty ground bolts, and every ground wire I can see is really well secured.
Thoughts and suggestions welcome! Adam
I've checked the spark with the paper clip trick and it's fine. I've checked the ohm reading on the magnetic pickup and it's within spec. All grounds appear to be OK. I'm at a loss as to what to look for.
The car is a new-to-me Factory Five Cobra that only has 1,600 miles on it, but is 6 years old. It's a 347 cid with a Holley, mechanical fuel pump.
MSD Digital 6AL box, MSD 8598 distributor. Coil Blaster 2. I actually replaced it last month because the coil died on me. Totally different symptoms: car stumbled when I first started it, then it dies and wouldn't restart. Coil did not have continuity. New coil fixed it right up.
Cap, rotor and plugs are new. Car runs great when it's running.
The tach is from Speedhut.
I hate to point to the little red box, so please advise on how to troubleshoot. As I said, the entire car looks brand new, so no rusty ground bolts, and every ground wire I can see is really well secured.
Thoughts and suggestions welcome! Adam
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