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Truck not starting due to fuel (I think)

Discussion in 'Technical Chat' started by skarpenz, Sep 14, 2009.

Page 2 of 2
  1. Sep 15, 2009 at 7:31 PM
    #21
    skarpenz

    #21
    skarpenz [OP] Active Member

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    '01 X-cab on bags. 2.4/5MT
    Its just bagged
    Will the truck start with faulty MAF/no MAF?
     
    skarpenz, Sep 15, 2009
    #21
  2. Sep 15, 2009 at 8:24 PM
    #22
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    Yes, but it may put it into a "safe" mode no allowing the RPM's above a certain level. Also, go easy on the starting fluid. The heads are aluminum are are prone to cracking if you use too much. As far as ruining the MAF, I don't know but they are very sensitive and picky when it comes to chemicals.
     
    98tacoma27, Sep 15, 2009
    #22
  3. Sep 15, 2009 at 8:29 PM
    #23
    skarpenz

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    skarpenz [OP] Active Member

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    '01 X-cab on bags. 2.4/5MT
    Its just bagged
    I don't hose the intake down, just a quick squirt to get it to run for a sec. My MAF is mounted RIGHT in front of my TB to accommodate this aftermarket intake and I was spraying the starter fluid directly through it, not thinking.

    I'm literally at a loss on this. Could my ECU be bad? Its been crossing my mind. There is definitely some questionable wiring going on under the hood from a PO. The more I consider the problems the more I want to find an ECU and try it out. I wish they didn't cost so damn much.
     
    skarpenz, Sep 15, 2009
    #23
  4. Sep 15, 2009 at 8:36 PM
    #24
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    The ECU in these trucks are very stout. I have yet to see one go bad. The P0110 is what is screwing you. It is the air temperature going into the intake. Based on the air temperature, it sends the signal to the ECU to adjust the fuel trim accordingly. The issue is without the ECU getting a signal from the MAF, it doesn't know what to set the fuel trim too. My suggest is replace the MAF (as you already plan to), reset the code, and try starting it without the fluid.

    Were you able to check the FPR?
     
    98tacoma27, Sep 15, 2009
    #24
  5. Sep 15, 2009 at 8:39 PM
    #25
    skarpenz

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    skarpenz [OP] Active Member

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    '01 X-cab on bags. 2.4/5MT
    Its just bagged
    How do I check an FPR? There is no gas coming into my vacuum line leading to the IM so the diaphragm is not torn/messed up. There is no fuel coming through the FPR into the return line though, but if the truck is not running then I can see how that would be so.

    Got a hint for me on that one?
     
    skarpenz, Sep 15, 2009
    #25
  6. Sep 15, 2009 at 8:40 PM
    #26
    skarpenz

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    skarpenz [OP] Active Member

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    '01 X-cab on bags. 2.4/5MT
    Its just bagged
    Also, where is the IAT on this thing? I have the aforementioned aftermarket intake and there is no IAT in the usual spot (there may be a harness plug though iirc coming off the passenger side wheel well). Wtf mate!
     
    skarpenz, Sep 15, 2009
    #26
  7. Sep 15, 2009 at 8:44 PM
    #27
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    Yes, apply battery voltage to the pump. Fuel should run out of the regulator into the return line. The FPR will work without vacuum.
     
    98tacoma27, Sep 15, 2009
    #27
  8. Sep 15, 2009 at 8:45 PM
    #28
    98tacoma27

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    Some stuff. Not a lot, just some.
    The IAT is built into the MAF. You should have two "wires" sticking out of the bottom of the MAF. One is a platinum hot wire, the other is the temperature sensor.
     
    98tacoma27, Sep 15, 2009
    #28
  9. Sep 15, 2009 at 8:46 PM
    #29
    skarpenz

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    skarpenz [OP] Active Member

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    Its just bagged
    There is no fuel coming through the return line. I'm pretty sure on this one. Its one of the first things I checked. I took the return line OFF and tried to start the truck and nothing would come out. If I take the FPR off then I can physically see gas in the rail. If I take the line coming to the rail off and try to start the truck then gas comes spewing out of it so I know the pump is working (2nd fuel pump btw).


    EDIT

    I figured the IAT was built into the MAF but most cars I have owned are not this way. So I figured I would clarify.
     
    skarpenz, Sep 15, 2009
    #29
  10. Sep 15, 2009 at 8:51 PM
    #30
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    That's odd that it doesn't come out of the regulator. It should.
     
    98tacoma27, Sep 15, 2009
    #30
  11. Sep 15, 2009 at 8:52 PM
    #31
    skarpenz

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    skarpenz [OP] Active Member

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    '01 X-cab on bags. 2.4/5MT
    Its just bagged
    I agree, it should, haha.
     
    skarpenz, Sep 15, 2009
    #31
  12. Sep 15, 2009 at 8:53 PM
    #32
    skarpenz

    #32
    skarpenz [OP] Active Member

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    '01 X-cab on bags. 2.4/5MT
    Its just bagged
    I'll check it again tomorrow, but there is NO gas smell coming from the return line when I unclamp it and pull it off. It isn't wet with gas or anything.
     
    skarpenz, Sep 15, 2009
    #32
  13. Sep 17, 2009 at 3:52 AM
    #33
    skarpenz

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    skarpenz [OP] Active Member

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    '01 X-cab on bags. 2.4/5MT
    Its just bagged
    Still have not figured this out. Putting a new FPR on it today. I played with the old one yesterday briefly and the diaphragm feels like it isn't budging in anyway. The plugs are SOAKED with gasoline.
     
    skarpenz, Sep 17, 2009
    #33
  14. Sep 17, 2009 at 5:05 AM
    #34
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    Interesting. Did you leave them out so it can "dry"?
     
    98tacoma27, Sep 17, 2009
    #34
  15. Sep 17, 2009 at 5:06 AM
    #35
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    Did you replace the MAF also?
     
    98tacoma27, Sep 17, 2009
    #35
  16. Sep 17, 2009 at 5:45 PM
    #36
    skarpenz

    #36
    skarpenz [OP] Active Member

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    '01 X-cab on bags. 2.4/5MT
    Its just bagged
    Fixed it. Turns out the feed hose inside the tank on the fuel pump was torn and I did not see it (torn by a clamp). It couldn't build pressure because all the fuel just pumped around in the tank. I almost had a fit when I found out what it was. This whole ordeal over a $.99 piece of hose.

    Thanks for all the help. Truck is running great now with a new filter and whatnot. Now on to the wiring...

    Tom
     
    skarpenz, Sep 17, 2009
    #36
  17. Sep 17, 2009 at 6:01 PM
    #37
    98tacoma27

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    98tacoma27 is going full "SANDWICH" Moderator

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    Some stuff. Not a lot, just some.
    Awesome Tom. What sucks is those are always the ones that take the longest to find.
     
    98tacoma27, Sep 17, 2009
    #37
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