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Old 01-17-2009, 12:52 AM   #1
ajlineman
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1985 Plymouth/Dodge neon

Yeah this is tickin me off. Car basically was starting intermittently, got bad and had to figure it out. First thing I checked was fuel and ignition.
Spark plugs looked good, took the hose off the end of the fuel rod and tried to start it up. Nothing came out (normally would get a steady stream).
Reconnected hose and listened at fuel tank while trying to crank it again. Can't hear anything at fuel pump.
Got a used pump that was supposedly tested, installed it (after much horror of finding it at the bottom of the tank, spilling some gas). Tried it and no start. Took off air intake and poured gas right into the throttle body, car started right up and died once that gas was out.
Havn't checked for clogs in the lines or fuel filter yet, on my way to do that now.
The whole question here is... Does the Neon have a fuel pump shut off switch like the old Ford Tempos had, or something else that needs to be reset when installing a new pump, or should it basically be plug, prime, start?
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Old 01-17-2009, 01:44 AM   #2
Satty101
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Problem is either a pinched fuel line, clogged fuel filter, or your USED fuel pump is total junk. Could also be fuel relay. Should be under the hood. If I were you, I'd check the relay first. When you turn the key to the "on" position, the relay should click. If it does, then it's still good. Check your fuel lines. Make sure there's no pinches in them. Replace your fuel filter. It doesn't cost much. 20 bucks average. Then atleast you know it's new, and will not be your problem anymore. Another thing, why did you buy a used fuel pump? I can understand not having much cash, but getting one brand new you know what you have. There's no question that it'll work. Buying used parts that are essential for the car to run is inexplicable IMO. But start with what I said. Start at the front, and work your way back.
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Old 01-17-2009, 04:58 AM   #3
corbett_auto
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One more thing to check is that you are actually getting voltage at the pump. Hook up a volt meter to the pump and insure you have 12V at the pump when you turn on the key. If the fuse and relay are working you should..... but just to insure that you do not have a broken wire.
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Old 01-17-2009, 05:09 AM   #4
Satty101
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Quote:
Originally Posted by corbett_auto
One more thing to check is that you are actually getting voltage at the pump. Hook up a volt meter to the pump and insure you have 12V at the pump when you turn on the key. If the fuse and relay are working you should..... but just to insure that you do not have a broken wire.



See, that's the kind of stuff I always seem to overlook...
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1999 Chevrolet Camaro SS (PC'd)
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1971 Dodge Charger SE (stock and original 383 auto)
2004 Subaru Impreza WRX (kid-hauler)
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Old 01-17-2009, 07:30 AM   #5
corbett_auto
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The reason I think like this goes back to a college class I had on computer repair..... The first step in troubleshooting a computer problem should always be "is it plugged in!"

And this practice has served me well in auto repair as well. Follow the flow all the way from beginning to end.... or end to beginning.

And once last thing check to see if there is a hole in the line somewhere... the pump may be dumping fuel all over the ground.
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Old 01-17-2009, 08:31 AM   #6
newyorker
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WAIT! There was a neon in 85?
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Old 01-17-2009, 10:06 PM   #7
Satty101
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Quote:
Originally Posted by newyorker
WAIT! There was a neon in 85?


Pretty sure he meant 95 dude.
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1999 Chevrolet Camaro SS (PC'd)
1994 Chevrolet Beretta Z26 Q4 (W41 M90'd)
2004 Chevrolet Silverado 2500 (4WD)

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1971 Dodge Charger SE (stock and original 383 auto)
2004 Subaru Impreza WRX (kid-hauler)
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