GTC won't start - 1 of 3

My GTC has had instances in the past where it would not crank. Also, simultaneously, the gauges would not respond. I would wiggle the fuse marked ignition and try again. Frequently this would fix it. If this did not work, I would tap the ignition relay switch cover you mentioned above. It appeared that the relay was hanging up. Eventually, I took the ignition relay out and had it serviced/rebuilt. This did not remedy the intermittent ignition switch situation. I then figured out that the bayonet connector under the ignition relay was installed with the connector adjacent to, but not over the mating connector blade. This was causing a poor connection. I assume now it had been this way for a long time. This is very subtle because the connections are difficult to see. If you install the connector just by feel, you can get this situation. I now put a small amount of dielectric grease on the contacts in the fuse box and with the relay switch wire connectors properly seated, the GTC cranking situation has been stable.
Best of luck.

 

"I wish I could get the car up on the lift in my garage to get to the starter and solenoid. However the car is up in front of the house and the garage is a 1/4 mile away at the lower end of our property. If I can get the car pointed down our steep driveway I [hopefully] can use gravity to push start the car. As long as I can keep it rolling downhill I think I can get it running. That would allow me the opportunity to put it on the lift in the garage. It's been a long time since I push-started a car. I am thinking 3rd or 4th gear to keep it moving.
Wish me luck!!"
GOOD LUCK!

AND BE CAREFUL !!!

 

There is no starter relay. The power to crank the starter comes directly from the ignition switch (Large white or brown wire, Ter. 50) to fuse 6 on fuse-box, then goes directly to the starter solenoid. If the car doesn't crank, it is either ignition switch, wiring, fuse (#6 Avviamento-Starter 30A/connections), or starter solenoid. Have someone check for power at the trigger wire (ter50) on the solenoid when the key is turned to crank position.
The large CEAM relay on the engine side of the fusebox is an ignition on relay, providing many of the systems with power (including the ignition system/coils) when the key is turned to the on position.

 

here are my thoughts, “your garage is a 1/4 mile away!?”. how big is your house?

 

Spend a few min looking over the wiring diagram to get familiar with what Brian is saying......it becomes obvious the path you need to follow. Let us know your findings.....

Related the fuses, when we finished the red GTC early this yr we had an intermittent issue with turn signal and rear lights. Turns out when we replaced a fuse in the circuit during restoration - the replacement fuse was 1/16 shorter in length and thus, seemingly tight when installed - was not tight enough. It had a little wiggle in the fuse block connection between the tabs. We investigate and found that not all fuse suppliers are equal. Discovery showed varying lengths on the ceramic or plastic and loose fuse material on the ends not properly assembled . Culprits of many strange issues !

 

Not sure this will help: I had a non-start issue after topping off the fuel tank in a gas station. The folks in the small town were very amused at watch my wife and I at an advanced age pushing my 365 GT 2+2 around the gas Island trying to compression start it. They offered no help from their perch in a two-story trucks.

Finally I looked under the dash and the thick brown wire to the ignition switch was dangling loose. I re-attached it and the car started.

We felt like the folks that survived in the movie Deliverance...outta here!

 

Mine does the same thing…..crazy thing is once I wiggle the gearbox shifter she fires right up?