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  #1  
Old 12-25-2014, 11:44 PM
justinhill7714 justinhill7714 is offline
 
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302 dying at warm highway speeds

I have a 1978 F150 with a 302. I replaced the starter and battery. My problem is when the truck warms up, and I'm going moderate speed (50 mph), the engine sputters, jumps, and then dies. I will take anywhere from 10 to 20 minutes to get it to turn on. Please help so I don't drop tons of money into stuff I won't need.

Thanks
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Old 12-26-2014, 06:17 AM
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Coil or engine control box on driver's fender?
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Old 12-26-2014, 06:32 AM
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Old 12-26-2014, 09:11 AM
justinhill7714 justinhill7714 is offline
 
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Thanks guys. Going to replace today or tomorrow. Let you know how it goes.
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Old 12-26-2014, 10:11 AM
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When it dies, check to see if you are getting fuel by looking down the carb and pulling on the throttle linkage...it could be the module like the other guys said but you might be having a fuel delivery problem as well.

I had a 78 Bronco that did this and it was fuel.
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Old 12-26-2014, 11:05 AM
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Definitely make sure when it dies that the accelerator pump is squirting fuel. My k5 did that. Took me a while.to figure out.

Next thing I'd check is the ignition module then coil. Just take them off and run into oriellies or such and they will test for free. Make them test a few times so they warm up since it's failing when warm
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Old 12-26-2014, 12:13 PM
justinhill7714 justinhill7714 is offline
 
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Appreciate the comments. Thanks again
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Old 12-26-2014, 12:47 PM
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a bit late to reply but my old truck did this and it was the ICM, $45 at Napa to replace.
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Old 12-26-2014, 01:07 PM
justinhill7714 justinhill7714 is offline
 
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This is what I'm looking at. Which part exactly?
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Old 12-26-2014, 01:11 PM
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It's the ignition control module that is mounted on the inside fenderwell on the drivers side. Has 2 plug-ins leeds. Gray/silver color box
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Last edited by amkatt1; 12-26-2014 at 01:20 PM.
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