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Mike S.
Mike S., Classic Car Mechanic
Category: Classic Car
Satisfied Customers: 6797
Experience:  A.S.E. certified with 25+ years experience.
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1965 Mustang only wants to start when you turn the key off,

Customer Question

1965 Mustang only wants to start when you turn the key off
JA: Is the car in "Park" or "Neutral?" Do you know if your car has a "wheel lock" feature?
Customer: No it dont
JA: Are you hoping to fix this yourself? What have you tried so far?
Customer: New coil cranks good but wants to start when you turn the key off when you turn key on I have spark when it cranks no spark when I shut it off I have spark
JA: Anything else you think the mechanic should know?
Customer: Just changed the brake booster had to unhook the brake switch car ran when it came in
Submitted: 4 months ago.
Category: Classic Car
Expert:  Mike S. replied 4 months ago.

Then you have no voltage going to the ignition coil when the key is on start, just when the key is on run.

Do you still have the original contact point distributor or has it been upgraded to electronic?

Is this the bas, and which engine is this and it is auto or manual trans?

Expert:  Mike S. replied 4 months ago.

I believe the power wire to the ignition coil for when the key is on start comes from the starter relay on this vehicle and it should be the thin brown wire at the starter relay.

Customer: replied 4 months ago.
been upgraded manual trans. With key on have power going to positive side of coil
Expert:  Mike S. replied 4 months ago.

You have to check when the key is on start, cause from what you explained that is when you have no spark, isn't it, when cranking.

Expert:  Mike S. replied 3 months ago.

Did you get that wire checked?

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