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Re: 1971 Road Runner Running Issue [Re: moparfury1970] #2299183
05/04/17 10:03 PM
05/04/17 10:03 PM
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moparfury1970 Offline OP
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I swapped out the orange box. installed a five prong black box. it is bolted to the firewall. I'll try the ground wire idea out. Thanks!

Re: 1971 Road Runner Running Issue [Re: moparfury1970] #2299190
05/04/17 10:11 PM
05/04/17 10:11 PM
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Lincoln Nebraska
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RapidRobert Offline
Circle Track
RapidRobert  Offline
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Lincoln Nebraska
An OE 5 pin box (has a functioning 5th pin) requires the 4 terminal "dual" ballast & its attending wiring. Aftermarket ones with a dummy 5th pin (has no continuity to anything) works with a "single" or "dual" ballast/wiring. The 5th pin is the terminal that the red/green wire is on in the pentastar connector.


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Re: 1971 Road Runner Running Issue [Re: moparfury1970] #2299269
05/05/17 12:09 AM
05/05/17 12:09 AM
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Morristown Tn.
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71birdJ68 Offline
master
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My dad had a car that did things like that, it turned out to be the winding in the distributor coil had an open and when it got hot it quit.

Re: 1971 Road Runner Running Issue [Re: RapidRobert] #2299380
05/05/17 08:14 AM
05/05/17 08:14 AM
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moparfury1970 Offline OP
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Originally Posted By RapidRobert
An OE 5 pin box (has a functioning 5th pin) requires the 4 terminal "dual" ballast & its attending wiring. Aftermarket ones with a dummy 5th pin (has no continuity to anything) works with a "single" or "dual" ballast/wiring. The 5th pin is the terminal that the red/green wire is on in the pentastar connector.


Very helpful info! Thanks.

Re: 1971 Road Runner Running Issue [Re: moparfury1970] #2299631
05/05/17 05:30 PM
05/05/17 05:30 PM
Joined: Jan 2008
Posts: 2,363
Cotati, CA
Dave Hall Offline
top fuel
Dave Hall  Offline
top fuel

Joined: Jan 2008
Posts: 2,363
Cotati, CA
Quote:
Some exhaust popping, but that's on the deceleration.

Check for exhaust leaks.

Re: 1971 Road Runner Running Issue [Re: moparfury1970] #2302003
05/09/17 09:50 PM
05/09/17 09:50 PM
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moparfury1970 Offline OP
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Hey guys, car starts right up. Idles strong and drives normally until I get up to around 35-40mph. The engine sounds like its starving for fuel. I checked my fuel filter and there was hardly anything in it.

Re: 1971 Road Runner Running Issue [Re: moparfury1970] #2302044
05/09/17 10:37 PM
05/09/17 10:37 PM
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Lincoln Nebraska
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RapidRobert Offline
Circle Track
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Lincoln Nebraska
get a gas can & a length of common 5/16 neoprene fuel hose & plumb the gas to the pump inlet with the can in the eng compartment or inside on pass side & retry it. some carbs have a mini coarse filter behind the inlet nut. next is what Dayclona said, try another pump. that would cover about everything fuelwise that I could think of. didn't read back thru all posts but float level is good, I dont think that could be it (unless a WOT issue) but K.I.S.S. is always a good plan


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