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Thread: 88 T1 Lebaron fuel issue, ie no fuel

  1. #1
    Hoosier Daddy?? Turbo Mopar Staff Clay's Avatar
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    88 T1 Lebaron fuel issue, ie no fuel

    OK so car is an 88 T1 Lebaron with a Mopar Performance SMEC.

    Car cranks but has no fuel pressure. I can't hear the pump try to prime at all, so I confirmed with a fuel pressure gauge. No pressure at all, even when cranking.

    So first thing I did was jump power to the positive side of the coil, still no fuel pump noise, and no fuel pressure.

    Then I got under the car and unplugged the pump to check the wiring. I've got continuity to the ground, but I never get +12 volts to the wires when I jump the positive side of the coil.

    If I can't get 12 volts to the plug when jumping 12 volts to the coil, what could I be missing?

    thanks,
    Clay
    Clay
    1986 GLH-T - Flat black......... learn it, love it, LIVE IT!
    1988 LeBaron GTC Turbo


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  2. #2

    Re: 88 T1 Lebaron fuel issue, ie no fuel

    Did you try jumpering the Fuel Pump relay?

  3. #3
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    I think you're dead on Clay. If you jump the coil and don't get power at the pump, you have a wiring problem in the Z1 circuit somewhere. That's a fun one for sure.

  4. #4
    Hoosier Daddy?? Turbo Mopar Staff Clay's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    Quote Originally Posted by cordes View Post
    I think you're dead on Clay. If you jump the coil and don't get power at the pump, you have a wiring problem in the Z1 circuit somewhere. That's a fun one for sure.
    Ugh. I was hoping you were going to respond with something obvious I missed. What ever it is was intermittent the last couple of times the car was driven as it was hard to start, and not it just will not start. Fun fun! thanks!!
    Clay
    1986 GLH-T - Flat black......... learn it, love it, LIVE IT!
    1988 LeBaron GTC Turbo


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  5. #5
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    Yep. I'm sure you know there are quite a few splices under the hood and that it runs through the firewall, through the car, all the way back to the tank. Green with black tracer. I don't have my diagrams in front of me, but I would think it's one of the fusible links. I would probably start there.

  6. #6
    Hoosier Daddy?? Turbo Mopar Staff Clay's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    yeah fusible links were my go to, suspect #1

    thanks man!
    Clay
    1986 GLH-T - Flat black......... learn it, love it, LIVE IT!
    1988 LeBaron GTC Turbo


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  7. #7
    Hoosier Daddy?? Turbo Mopar Staff Clay's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    Ok thanks for the help everyone. I went through everything again today, and it turns out I must not have been using a very good ground to check voltage at the plug. I ran a jumper up to the engine block and once I did that I do actually have 12 volts everywhere I'm suppose to, and when I'm suppose to! SO it looks like the pump is bad. It's not that old and I could read the sticker on it "Airtex E7069H". Turns out that's not the correct pump for this car, so that could be part of the issue. Anyway, what are your recommendations for a new pump? I don't really need a walbro because this is just a cruiser.
    Clay
    1986 GLH-T - Flat black......... learn it, love it, LIVE IT!
    1988 LeBaron GTC Turbo


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  8. #8
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    I would price shop the different combinations. There were times in the past when it was cheaper to buy the Walbro from one of our vendors than to go with whatever replacement pump was available from parts stores.

  9. #9
    Hoosier Daddy?? Turbo Mopar Staff Clay's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    well I found an NOS turbo pump assembly on ebay for $55. Probably my best bet!
    Clay
    1986 GLH-T - Flat black......... learn it, love it, LIVE IT!
    1988 LeBaron GTC Turbo


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  10. #10
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    Quote Originally Posted by Clay View Post
    well I found an NOS turbo pump assembly on ebay for $55. Probably my best bet!
    That's more than worth it just for the hanger assy. Nice score Clay.

  11. #11
    Hoosier Daddy?? Turbo Mopar Staff Clay's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    Anyone wanting what I think is an awesome deal on a fuel pump assembly, act now! I bought one of these last week and installed it Tuesday. Super nice NOS part, sealed in the factory box. Worked perfect! Right now they are 25% off, so like $44 shipped. https://www.ebay.com/itm/223572530048
    Clay
    1986 GLH-T - Flat black......... learn it, love it, LIVE IT!
    1988 LeBaron GTC Turbo


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  12. #12
    Rhymes with tortoise. Turbo Mopar Staff cordes's Avatar
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    Re: 88 T1 Lebaron fuel issue, ie no fuel

    Quote Originally Posted by Clay View Post
    Anyone wanting what I think is an awesome deal on a fuel pump assembly, act now! I bought one of these last week and installed it Tuesday. Super nice NOS part, sealed in the factory box. Worked perfect! Right now they are 25% off, so like $44 shipped. https://www.ebay.com/itm/223572530048
    Thanks Clay. I ordered one up for a spare. The price is well worth it just for the hanger in my opinion.

  13. #13

    Re: 88 T1 Lebaron fuel issue, ie no fuel

    Quote Originally Posted by Clay View Post
    Ok thanks for the help everyone. I went through everything again today, and it turns out I must not have been using a very good ground to check voltage at the plug. I ran a jumper up to the engine block and once I did that I do actually have 12 volts everywhere I'm suppose to, and when I'm suppose to! SO it looks like the pump is bad. It's not that old and I could read the sticker on it "Airtex E7069H". Turns out that's not the correct pump for this car, so that could be part of the issue. Anyway, what are your recommendations for a new pump? I don't really need a walbro because this is just a cruiser.
    This is concerning. Why couldn't you find a decent ground by the pump? The pump itself should have a good ground. If it doesn't, then that is a problem...

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