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65 mustang wont stay on
hi i have a 66 mustang 289 that wont stay on when it turns off i crank it back on and it starts and cuts off again even when i put some throttle into it it cuts off. i already blew the gas line with some compressed air and it still has the same problem. any suggestions could it involve the ignition system, carburetor is brand new. please help :CRY:
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Coils also get an initial 12v on cranking and as soon as the starter solenoid disengages, it reverts back to resistor voltage. If the coil is on it's way out or is defective, it will start but not run or take a load to produce rpms. Check the coil and coil voltage feed also.
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My '67 Ford Falcon had this EXACT problem. what happened is it would get the 12v to the coil on cranking, fire up then die from no voltage. I ran a jumper wire from the solonoid I terminal ( for cranking bypass ) to the + side of the coil. this corrected the problem. I never fixed the problem wire, tore the engine apart b4 I got to it. and it will be fired with a DS2 distributor, and MSD 6 BTM, so I'll be replacing it anyway. I don't know why it got 7 volts to the starter solonoid, but that's what my DVOM read. was 0 at the coil.
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what would be the symptoms of a bad coil and a bad solenoid. the engine remains on for a couple of seconds. it all started ever since the car stopped running for a year. i used a spare coil (a) to see if the one in the car (b) was bad and the engine stayed on i turned off the car and used the one on the car(b) started the engine it didn't turn off. (good) next morning i turn on my car and it stayed running for a couple of second back to the same problem.
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is the gas in the tank a year old? old gas can make a car not want to run well... also the contacts in the ignition switch could be worn out.... my mustang was having a similar problem, if held pressure on the key it'd run second i let go it'd shut off just use some wire with aligator clips and run from your battery to your coil positive terminal, then jump the starter solenoid and see if she fires up and runs continuosly ... thats the under the hood method of stealing an old car :LOL: