5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

sputtering 5.0

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Old 12-24-2006, 07:19 PM
  #11  
mattdel
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Default RE: sputtering 5.0

you need to drop your fuel tank and pull the pump out to be sure. i have this exact problem currently and i was supposed to install a new tank today, but i'm hungover and don't feel like it.

dropping the tank isn't all that hard. only 2 bolts for the straps, then slowly lower it with a jack until you can reach the hoses and electrical connections on top, undo them, and it pulls right out. Be sure to keep track of what hoses went where. It's crutial that they go back in the same spot. Only 2, so it's not hard.
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Old 12-24-2006, 07:28 PM
  #12  
five0fm
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Default RE: sputtering 5.0

ok do u need a special wrench to take off the tank....i herd you need a brass wrench or something so it doesnt create a spark or something weird like that.,....will i notice the baffle when i take the fuel tank off....do i have to take the tank apart to find the baffle
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Old 12-24-2006, 07:31 PM
  #13  
mattdel
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Default RE: sputtering 5.0

yah, when you drop the tank, you will need to remove the fuel pump, which goes in from the top on the far right side of the tank. it has a lock ring around it. you can just use a regular screwdriver and hammer to lightly tap the ring around in a circle, to unlock it. some people say to use brass tools, as they won't spark, but those people have problems holding tools straight. as long as you dont miss, or knock the screwdriver in some odd angle, it won't move off the lockring, creating no sparks. also the lock ring is aluminum, it will bend and split before it will spark.
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Old 12-24-2006, 07:35 PM
  #14  
five0fm
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Default RE: sputtering 5.0

will you be able to see it when you move the tank down a little bit?
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Old 12-24-2006, 07:36 PM
  #15  
mattdel
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Default RE: sputtering 5.0

After the pump is removed, just look into the hole that the pump came out of. you will see the baffle. it kinda looks like a big steel bowl. use your screwdriver and try to move the baffle around. if it moves, you have two options. drain all the gas, make SURE it's dryed completely, and have it welded back in place, or get a new tank. i got a new tank because i also have a leak somewhere.
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Old 12-24-2006, 07:39 PM
  #16  
five0fm
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Default RE: sputtering 5.0

does the tank come apart easy or what....
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Old 12-24-2006, 07:41 PM
  #17  
mattdel
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Default RE: sputtering 5.0

yah its a piece of cake. you won't be able to get the pump out unless the tank is dropped right out. a good hour and you'll have your answer.
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Old 12-24-2006, 07:44 PM
  #18  
five0fm
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Default RE: sputtering 5.0

well this completly blows....but thanks for all the info....i got to put a new gas gauge sending unit in it nyway so i might as well drop the tank.....uve been a big help....if i have more problems im gunna find u n email you. thanks
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Old 12-24-2006, 07:46 PM
  #19  
mattdel
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Default RE: sputtering 5.0

yah no problem man... don't hesitate to PM me if you got more questions.
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Old 12-24-2006, 07:55 PM
  #20  
g2_5point0
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Default RE: sputtering 5.0

if the car was hot and stuttering and whatnot, it might also be a busted ignition module
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