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95 LT1 formula will not stay running...

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  • #16
    if the fuel pump is not working , its no point trying something else before you sort that out...
    93 t/a A4 3.23s
    95 Formula A4 2.73s >>>>93 t/a 3.23 , !AIR, !cat, !A/C, hotchkis lowering springs, kyb adj shocks, DD
    99 Camaro z28 a4, 2.73, !AIR, !A/C
    99 Alfa Romeo 166 3.0 v6, red
    97 3.8 v6 A4 camaro, hardtop
    93 Camaro Z28 M6, hotcam kit, 150 shot, twin plate clutch, eibach pro kit and bilstein shocks, swaybars etc
    00 audi a6 4.2 40 valve v8

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    • #17
      ok, so I ordered a fuel pump and the new fuel line that I broke when I was changing the filter, and I cut the acess panel to remove the pump So, I guess just have to wait till parts come in.
      Attached Files

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      • #18
        I just got it working, it was the fuel pump! used fuel pump $45, new fuel lines $61 thanks for everyones help!

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        • #19
          Fuel pump broke again.. I guess thats what I get for buying a used one and running it on empty alot... anyone have an extra pump laying around..

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          • #20
            The fuel in the gas tanks acts as a coolant for the pump too. When you run it real low you don't have that coolant and it runs hot.
            2002 Electron Blue Vette, 1SC, FE3/Z51, G92 3.15 gears, 308.9 RWHP 321.7 RWTQ (before any mods), SLP headers, Z06 exhaust, MSD Ignition Wires, AC Delco Iridium Spark Plugs, 160 t-stat, lots of ECM tuning

            1995 Z28, many mods, SOLD

            A proud member of the "F-Body Dirty Dozen"

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            • #21
              word of advice, get a new pump from GM, u can get away with just the pump and not the sender and it be a lil bit cheaper. also on a GM dont run it much below 1/4 tank, as u have experinced and what was just said. and trust me its common, alot of GMs in my shop, they run them low, then fill the tank and ka-poot, the fuel pump is dead
              2009 Honda Civic EX- the daily beater

              old toys - 1983 trans am, 1988 trans am, 1986 IROC-Z, 2002 Ram Off-Road, 1984 K10, 1988 Mustang GT, 2006 Silverado 2500HD

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              • #22
                ok I got the new pump (used) and it seems like the sending unit was bad because it always read full.. when I say full I mean way past full... so I swapped the sending unit for the old one I had and it seemed to work fine for a couple of days then wammm! back on full even when I put 200 miles on on one tank.. it is stilll reading full.. anyone know what that is?

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                • #23
                  Originally posted by cali108
                  ok I got the new pump (used) and it seems like the sending unit was bad because it always read full.. when I say full I mean way past full... so I swapped the sending unit for the old one I had and it seemed to work fine for a couple of days then wammm! back on full even when I put 200 miles on on one tank.. it is stilll reading full.. anyone know what that is?
                  Most likely the float arm was bent on the install or the linkage is binding.

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                  • #24
                    ok thanks .. I'll pull it out and check it again... could it be the gauge?

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