Classic Mustangs (Tech)Technical discussions about the Mustangs of yester-year.
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I have a 66 Mustang 289 and I'm hoping someone can help me out with a problem. Around a month ago I was driving and my car was beginning to stall about 5-10 minutes in when driving.
I thought it had something to do with my carb so I got that rebuilt (Edelbrock) and changed all my fuel filters and put a new fuel pump in (electric). That didn't help so I thought it was something with my ignition system, so I replaced my cap/rotor on my Mallory Unilite Distributer (yes I know they suck but it was a gift!) and my plugs and wires and I also replaced the Unilite Condensor about 8 months ago. That still didn't work so I then replaced the actual ignition switch and started it up last weekend and it still died on me after about 5-10 minutes. sometimes it would start back up but after a while it wouldn't until about 30 minutes after.
It can't be a vapor lock because I have heat shield over my fuel lines and I have spark to my wires but, its weird when I checked spark it would actually spark when I let go of the key after I bumped the motor?? If someone can help me out it would be greatly appreciated cause I'm tired of throwing money at it just replacing stuff.
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Sounds like junk in the tank. The 'junk' eventually gets sucked up to the sock on the pickup tube and starves the car of fuel. After sitting a while the 'junk' drops off the sock and you're able to go again.
Drain the tank and see what comes out, besides gas. Or, get the level low enough and pull the sender unit out and take a peek inside.
Sounds like my old ignition module. Would be running fine, then BOOM...dead as a doornail and wouldn't crank. Let sit for a few minutes, it cools down, and off to the races again. My grandfather said in a pinch I could put ice on the box to cool it down and get it running but I just straight up replaced it before it happened again. It wasn't a mallory kit though, so can't really speak to them with authority...just hearing exactly what happened to me.
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