Dirty Girl's stranded

Discussion in 'V8 - Maintenance & Troubleshooting' started by 98SF19, Jan 22, 2020.

  1. 98SF19

    98SF19 AlphaKennyBuddy

    Joined:
    Oct 8, 2009
    Messages:
    755
    Likes Received:
    150
    Occupation:
    Civil Design
    Location:
    Florida
    Disconnecting EGR didn't help, which eliminates clogged cats as the root problem? Doing a more thorough Schrader valve check (key to on) I got a little squirt of fuel upon depressing the pin. But that was it. Pressing it any further at that point gave nothing. But I still hear the distinct whine of the fuel pump upon key on???

    So unless anyone has further suggestions, can I move into asking what options there are for the fuel pump? I'd like an upgrade, but not overkill. Still on original injectors. I've learned it's usually a waste of time to research old posts for suggestions of available parts since some are discontinued or replaced by upgrades. I'll hit up RockAuto and Summit right now . . .
     
  2. gamefanatic

    gamefanatic SHO Member

    Joined:
    Feb 20, 2005
    Messages:
    513
    Likes Received:
    175
    Location:
    Barstow, CA
    Well in your first post you mention P1514. If that code is true look at your MAF sensor as being an issue. Get the car started and disconnect it. It should raise up in RPM's around 3k. Then check the voltages going to the MAF make sure they are in range.

    If you are concerned about fuel pump you should check your pressures at KOEO. Is the pressure between 35-40 lbs? Does it hold steady while the car is running?

    What happens if you remove the vacuum tube from the pressure regulator?

    As for fuel pump recommendations I have used TRE-342 pumps in both of my SHO's. ShoSource has the Walbros. Getting a higher flow pump won't do much until you upgrade injectors and MAF.
     
    Last edited: Feb 1, 2020
  3. 98SF19

    98SF19 AlphaKennyBuddy

    Joined:
    Oct 8, 2009
    Messages:
    755
    Likes Received:
    150
    Occupation:
    Civil Design
    Location:
    Florida
    I wasn't sure about the code, but it did say something about IAC, which I had just previously disconnected.
    There was NO pressure as stated, just a small squirt initially, then nothing.

    Eric's post here from back in the day may also be a factor (2nd post):
    https://www.v8sho.com/SHO/FUEL PUMPS - A DISCUSSION.htm
    Remember my fuel level was very low from the time this started and it was a cold day.
    I will bring a couple of 5 gallon jugs full-o-gas Monday morning and see if that helps, along with doing the multiple key on/off priming mentioned.
     
  4. luigisho

    luigisho SHO Member

    Joined:
    Nov 2, 2001
    Messages:
    9,467
    Likes Received:
    2,297
    Location:
    va beach,va
    Home Page:
    If you are looking at a fuel pump you might want to limit how much gas you put into the tank if you need to drop it.
     
    SHOMON likes this.
  5. 98SF19

    98SF19 AlphaKennyBuddy

    Joined:
    Oct 8, 2009
    Messages:
    755
    Likes Received:
    150
    Occupation:
    Civil Design
    Location:
    Florida
    Luigi, see my post #4 above; I would be attacking it from the top with tank in place.
    Really just looking to avoid a tow at this point, even though it would be free through insurance.
     
  6. luigisho

    luigisho SHO Member

    Joined:
    Nov 2, 2001
    Messages:
    9,467
    Likes Received:
    2,297
    Location:
    va beach,va
    Home Page:
    I haven't cut one of those in a long time. Maybe my 1st GenI back in the 90's. Wasn't sure the measurements were out there for the GenIII. Good luck and post back with results. Maybe you can get a look at how much sediment and stuff is in there with the sending unit out.
     
  7. gamefanatic

    gamefanatic SHO Member

    Joined:
    Feb 20, 2005
    Messages:
    513
    Likes Received:
    175
    Location:
    Barstow, CA
    Knowing how similar the bodies are laid out between Gen2 and Gen3, they are probably very close.

    I just jack up the car, put my ramps under the rear tires and use my floor jack to lower the tank. Full or not, its not an issue. If you don't have the long arms like my jack, you could just put a piece of wood of size to help balance it out as you lower it. Just remember to disconnect as much as you can before lowering too much. Some of the hoses will require some english to get off. Its a good time to inspect for cracks anyway. :)
     
  8. E1

    E1 Crash Tested

    Joined:
    Jan 24, 2003
    Messages:
    544
    Likes Received:
    248
    Occupation:
    Printing mechanic/engineer
    Location:
    Chicago area
    Home Page:
    luigisho likes this.
  9. luigisho

    luigisho SHO Member

    Joined:
    Nov 2, 2001
    Messages:
    9,467
    Likes Received:
    2,297
    Location:
    va beach,va
    Home Page:
    SHOdded and SHOMON like this.
  10. E1

    E1 Crash Tested

    Joined:
    Jan 24, 2003
    Messages:
    544
    Likes Received:
    248
    Occupation:
    Printing mechanic/engineer
    Location:
    Chicago area
    Home Page:
    Actually, I posted that here.

    It is a simple post with pictures of an engine with a tape measure stretched this way and that.

    Can't remember where or when, but if you search all my posts in the last few years you Should find it.
     
  11. 98SF19

    98SF19 AlphaKennyBuddy

    Joined:
    Oct 8, 2009
    Messages:
    755
    Likes Received:
    150
    Occupation:
    Civil Design
    Location:
    Florida
    From post #4 . . . .
    I think I had the seat out as part of plan to expand high center brake light with LED and change rear struts, the latter of which never happened; and thought I'd mark the body where Eric had measured while I had access.
     
  12. 98SF19

    98SF19 AlphaKennyBuddy

    Joined:
    Oct 8, 2009
    Messages:
    755
    Likes Received:
    150
    Occupation:
    Civil Design
    Location:
    Florida
    Before I commit to fuel pump replacement, I'd like to know for sure if latest findings point that direction . . .
    I added 10 gallons to tank (which was already very low), hoping to "help" the pump by raising fuel level. Well, the only change now is that I get a slightly stronger spritz of fuel from Schrader valve after multiple KOEO's to build pressure. But beyond this initial squirt, there is NOTHING from the valve. Attempts at starting are the same - dying after a few seconds with IAC connected, and running for 30-40 seconds with it disconnected, albeit with some troubling sounds coming from exhaust tips. I may add another 5 gallons tonight just to see if it makes any difference, but after that I'm calling for tow. Thanks!
     
  13. outatyme357

    outatyme357 New Member

    Joined:
    Mar 28, 2017
    Messages:
    22
    Likes Received:
    8
    Are you / is the car anywhere near N. Florida by chance?
     
  14. 98SF19

    98SF19 AlphaKennyBuddy

    Joined:
    Oct 8, 2009
    Messages:
    755
    Likes Received:
    150
    Occupation:
    Civil Design
    Location:
    Florida
    I was Panama City Beach this weekend, but not the car. I live in Brevard County.
     
  15. outatyme357

    outatyme357 New Member

    Joined:
    Mar 28, 2017
    Messages:
    22
    Likes Received:
    8
    oh - i asked because i was trying to see if i could help somehow (live near Tlh) - have you put a fuel pressure gauge on it? go to a parts store and see if they have one on their loaner tool / rental tool program - you have to pay for it but then get a full refund when you return it. - do you have a OBDII code reader / scan tool? you should be able to loan / rent a fuel pressure guage and a compression tester gauge from advance / orielly / autozone. You're around 245mi from me one way lol
     
  16. outatyme357

    outatyme357 New Member

    Joined:
    Mar 28, 2017
    Messages:
    22
    Likes Received:
    8
    What's your theft light doing when you stick the key on and turn it to the run position (just under start where all the idiot lights prove out)? the theft light should come on solid for a second or so and go out with the key on - if it is flashing at you then that means the fuel pump is not being commanded on since the car can't read / doesnt recognize the PATS key.
     
  17. 98SF19

    98SF19 AlphaKennyBuddy

    Joined:
    Oct 8, 2009
    Messages:
    755
    Likes Received:
    150
    Occupation:
    Civil Design
    Location:
    Florida
    As many times as I've gone to KOEO and looked for something out of the ordinary in cluster, I don't remember seeing the theft light flashing. Recall that the motor does start, just doesn't stay running, especially with IAC connected, but with IAC unhooked, I can get on the gas a bit and keep it running, just feels and sounds like s#!t.
    I believe the only lights that stay on are CEL, Battery, and oil can (checked and filled 2 weeks ago). The CEL is related to the fact that I had disconnected the IAC a few times. I'll recheck with scanner again tonight, and check oil too while I'm at it. Will mostly likely end up scheduling tow for tomorrow night.
     
  18. outatyme357

    outatyme357 New Member

    Joined:
    Mar 28, 2017
    Messages:
    22
    Likes Received:
    8
    the normal behaviour for the theft light is on for 1-2 seconds solid then off (a prove out) state if flashing though that means PATS is shutting down the Fuel pump / injector pulse width.



    This cluster at 43 seconds in is what the proper / expected / correct behaviour of the theft light should look like - if this 2 second on then off of the theft light is what you are seeing then that means PATS is good to go and it is not an anti theft / PATS concern.




    This cluster at 1:03 seconds is what a PATS concern looks like (theft light rapidly flashing at KOEO)
     
    Last edited: Feb 10, 2020
  19. outatyme357

    outatyme357 New Member

    Joined:
    Mar 28, 2017
    Messages:
    22
    Likes Received:
    8
    The other thing about the fuel pressure is that you will only get an initial prime up when you turn the key to run position (KOEO) then the pump will stay off until the PCM detects a crank / camshaft rotation signal from the crankshaft position sensor. AKA if you turn the key on (KOEO), try to crank it and it dies and you press in the schrader valve on the test port of the fuel rail you will get sprayed with gas and the pressure will then wane / subside since the pump only runs for 1 second after key on to run position (where all the dummy lights on the cluster come on) then only when the ignition switch is in the run position, PATS allows it and when the camshaft / crankshaft position sensor indicates the engine is turning. if my explanation makes sense lol
     
  20. outatyme357

    outatyme357 New Member

    Joined:
    Mar 28, 2017
    Messages:
    22
    Likes Received:
    8
    you just get gas before this happened? perhaps water in your fuel is a distinct possibility as well.
     

Share This Page

If you wish to help keep SHOforum running, please click the donation button below