1. tamadrummer88

    tamadrummer88 Active Member

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    So earlier in may, my car would start but wouldn't stay idling. We thought it was a vacuum leak or a leaking manifold gasket. Now, after all new manifold gaskets, 80% new vacuum lines, the car will just start and then die. won't even idle. I can't tell if theres a vacuum leak or whatnot. Im stumped.

    Any ideas?
     
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  2. tannerc91gt

    tannerc91gt More durable than coconuts and twice as fast

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    Have you tried asking it nicely?
     
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  3. tannerc91gt

    tannerc91gt More durable than coconuts and twice as fast

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    What's the fuel pressure look like? Cold start obviously?
    Does it start and then stumble til it dies? About how long does it stay running?
     
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  4. tamadrummer88

    tamadrummer88 Active Member

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    It just starts and dies. yes cold start. Haven't checked fuel pressure.
     
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  5. tannerc91gt

    tannerc91gt More durable than coconuts and twice as fast

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    Fuels where I'd start. Check to see if the pump primes. Check pressure at the rail. If there's an issue check voltage at the pump. Should narrow down pretty quick.
     
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  6. Gearbanger 101

    Gearbanger 101 Straight Outta Locash
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    Have you tried running it for codes? Could be a bad, or carboned up IAC motor.
     
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  7. tamadrummer88

    tamadrummer88 Active Member

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    The pump primes.
     
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  8. stykthyn

    stykthyn Commander of the snuggie cultists

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  9. 84Ttop

    84Ttop They make new pistons every day, so why worry?
    SN Certified Technician Mod Dude

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    LMAO!

    I would also check for codes and fuel pressure for starters...
     
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  10. tamadrummer88

    tamadrummer88 Active Member

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    At this point that doesnt sound like a bad idea. lol
     
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  11. mikestang63

    mikestang63 Mustang Master

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    have the EEC tested
     
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  12. jrichker

    jrichker StangNet's favorite TOOL
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    You guys with idle/stall problems could save a lot of time chasing your tails if you would go through the Surging Idle Checklist. Over 50 different people contributed information to it. The first two posts have all the fixes, and steps through the how to find and fix your idle problems without spending a lot of time and money. I continue to update it as more people post fixes or ask questions. You can post questions to that sticky and have your name and idle problem recognized. The guys with original problems and fixes get their posts added to the main fix. :D

    It's free, I don't get anything for the use of it except knowing I helped a fellow Mustang enthusiast with his car. At last check, it had more than 134,000 hits, which indicates it does help fix idle problems quickly and inexpensively.
     
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  13. tamadrummer88

    tamadrummer88 Active Member

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    The car can turn over, but as soon as it starts, it dies. What would the EEC have to do with it? How can i test it?
     
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  14. 90lxwhite

    90lxwhite I'm kind of a She-Man

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    Zing!
     
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  15. tamadrummer88

    tamadrummer88 Active Member

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    Okay, some progress made. Rechecked all lines and gaskets. Car still starts and immediately dies. BUT! It now idles, but barely. And i was running it with the vacuum off of the fuel pressure regulator. Now, I have a suspicion that it may be the pump or the regulator. Sprayed some fuel into the filter and the car idled a bit. Now to get a gauge. Do i test the pressure from the regulator or the schrader valve? What does the pressure need to be with the vacuum off at idle?
     
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  16. tamadrummer88

    tamadrummer88 Active Member

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    I unplugged the MAF, and the car idled a bit, but very rough. Im gonna clean the MAF and the IAC (might as well) and see if that fixes it.
     
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  17. Gearbanger 101

    Gearbanger 101 Straight Outta Locash
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    Did you ever end up running the car for codes? I'd do that before pulling off parts.
     
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  18. tannerc91gt

    tannerc91gt More durable than coconuts and twice as fast

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    I'm gonna keep harpin about it being your fuel system until you prove me wrong. So hurry up and prove me wrong so I can go to bed
     
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  19. tamadrummer88

    tamadrummer88 Active Member

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    After going over everything else i did in the beginning again, I'm now thinking its the fuel system.
     
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  20. 90lxwhite

    90lxwhite I'm kind of a She-Man

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    I bet it chaps ole boys' azz when folks don't follow his check list. The intro is just way to damn long.
     
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