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Help Please!...electrical??


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Hello everyone:

 

Today I started up my 240z for the first time after 3 weeks of not being driven. The problem is that after i started the car up and let it warm up, i closed the door and....it died on me. I have no clue what caused this.I tryed to start it vack up and no luck :cry: . The engine turns over fine but it doesn't start. Before this the car did something similar when i ran over a small bump on the road like a month ago, it just died. The differance is that that time it did start back up right away. The battery is brand new and I know it's charged fully. So can anyone help me out here???? :?: Thanks! :(

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Probly a loose or badly grounded wire somewhere. It could have gotten jared and come loose when you slamed the door. Most likely an ignition wire too.. if it turns over but wont start.. Check to see if the engine is getting spark first of. If not, maybe the coil or other electrical components/wires are bad.

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I'd guess that you shook something loose when the door slammed, but it could just be a coincidence. The usual things apply- Is is it getting gas, and is there a spark?

 

If it Is getting gas to the carbs there should be a strong smell of gas. If not, or you aren't sure, you can lift the piston in each carb and give it a shot of starting fluid, then see if it fires.

 

No luck?

 

Pull one of the spark plug wires and see if there is a spark... slide the boot back, and hold it about 1/16 of an inch from a ground (NOT those smelly carburetors :D ) & watch for a spark when the engine cranks. Note that this is also a bit of a plug wire test- if the insulation is shot you may get bit :twisted:. By pulling a plug wire rather than the high tension lead to the distributor you are making sure the rotor or distributor cap hasn't shorted to ground.

 

Random electrical thoughts- When the flexible wire(s) in the distributor (continously flexed by the vacuum advance) finally break(s) through fatigue, the engine stops. If it was a hot wire grounding out, then you should have blown fuses or burned insulation. I've had an ignition switch fail so that it shut off the engine when I hit a bump. I saw a chevy pickup with a corroded/tired fuseable link that gave out, leaving it dead. A ground connection can go away-- check to be certain you have good grounds all around (battery, engine and body all tied together).

 

Grab a meter and look for voltage... happy hunting.

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  • 2 weeks later...

I had this happen to my 240z. It would start and quit or quit on braking or hard turns. The wires that attach to the coil had connectors that were corroded and loose. I put new connectors on and the problem is fixed.

 

 

Miles

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