No spark

[Bullitt]

No spark, car wont start. Engine gets gas. As some may know I am finishing my frame off restoration. I have had the car running well for some time, but suddently a few months ago car would not start. I have a new coil and resistor. The engine harness, main harness, fuses and relays are new. Plugs and plugwires are 8 years old, but barley used. I have checked the inertia switch and pulled out one plug to check for spark. I put a wire between + on coil and jump start post. No luck. Any tips on what check next?

[DMC5180]

It wouldn’t hurt to unplug and reconnect the ignition ECU connector. The ECU is mounted under the Idle ECU behind the Driver seat.

Mine somehow lost connection within the connector contacts. It happened a couple times before I discovered the problem. Once while just sitting in the garage and the other while driving and was like I turned the key off. I discovered the fault by accident, I had checked through the usual suspect areas with no luck. The only thing left was the ECU. I put my hand on the connector and wiggled it just a little. Then turned the key and it fired up instantly, the Ah ha moment. I wiggled it a little while the engine was running and sure enough it shut down. At that point I removed the connecter took a look at the terminal contacts. Nothing looked dirty, but I connected and disconnected it a few times to scratch the terminals to one another.

It has been fine ever since.

Sent from my iPhone using Tapatalk

[Bullitt]

It wouldn’t hurt to unplug and reconnect the ignition ECU connector. The ECU is mounted under the Idle ECU behind the Driver seat.

Mine somehow lost connection within the connector contacts. It happened a couple times before I discovered the problem. Once while just sitting in the garage and the other while driving and was like I turned the key off. I discovered the fault by accident, I had checked through the usual suspect areas with no luck. The only thing left was the ECU. I put my hand on the connector and wiggled it just a little. Then turned the key and it fired up instantly, the Ah ha moment. I wiggled it a little while the engine was running and sure enough it shut down. At that point I removed the connecter took a look at the terminal contacts. Nothing looked dirty, but I connected and disconnected it a few times to scratch the terminals to one another.

It has been fine ever since.

Sent from my iPhone using Tapatalk

No luck there.

[Bitsyncmaster]

No luck there.

The two pin connector from the pickup sensor near the drivers side firewall gets very corroded. Check that connector.

[Bullitt]

The two pin connector from the pickup sensor near the drivers side firewall gets very corroded. Check that connector.

Looks ok

[Bullitt]

According to manual if voltage between terminal 1 on coil and ground shows less than 0,5V there is a short circuit in ECU module. Mine shows 4,5V.... (Battery Voltage over 12V)

[Jonathan]

You said you had the car running well for sometime and then suddenly, a few months ago, it wouldn't start. Is this before you started the frame off restoration, or after you had begun putting the car back together?

If the car has not run well since before the restoration, I would suggest going back through your connections, one by one, and confirming not only that the routing is correct, but that each connection point is clean and secure.

If the car was running well after you had things put back together and then suddenly wasn't able to start, I would be trying to figure out what exactly you were doing on the car right after it last ran well. Perhaps you have notes or a log you keep of your progress or maybe just some pictures that'll help you figure it out. If it wasn't a specific part that you were working on at either installing or replacing, then it might have been something nearby you bumped loose while in there.

I would try and figure out a better timeline of when the problem started and what exactly changed at that point. Then focus your efforts looking there.

[Bullitt]

You said you had the car running well for sometime and then suddenly, a few months ago, it wouldn't start. Is this before you started the frame off restoration, or after you had begun putting the car back together?

If the car has not run well since before the restoration, I would suggest going back through your connections, one by one, and confirming not only that the routing is correct, but that each connection point is clean and secure.

If the car was running well after you had things put back together and then suddenly wasn't able to start, I would be trying to figure out what exactly you were doing on the car right after it last ran well. Perhaps you have notes or a log you keep of your progress or maybe just some pictures that'll help you figure it out. If it wasn't a specific part that you were working on at either installing or replacing, then it might have been something nearby you bumped loose while in there.

I would try and figure out a better timeline of when the problem started and what exactly changed at that point. Then focus your efforts looking there.

It has been running after the frame off. I have basically just been assembling side stripes and rub strips. I had a problem with high beam fuse being blown. The thing I did just before it would not start was to check relays and fuses... I have checked them again, cant find anything wrong.

[Jonathan]

It has been running after the frame off. I have basically just been assembling side stripes and rub strips. I had a problem with high beam fuse being blown. The thing I did just before it would not start was to check relays and fuses... I have checked them again, cant find anything wrong.

Did you solve the high beam fuse problem? What was the solution?

Is your battery in good shape and fully charged?

Would you be able to post some photos of those fuses and relays you checked? Perhaps someone on here might be able to spot something you're overlooking?

[Bullitt]

https://youtu.be/jdwpAG6AB18

Watch video.

I have everything connected as usual, but with a switch on +side of coil and a plugwire from coil with a plug to ground.
Then all is good? Or is it too weak spark?