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Ahh this car with be the death of my wallet!!

Discussion in 'Diagnosis/Help' started by lsgheero, Mar 8, 2007.

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  1. lsgheero

    lsgheero Well-Known Member

    So today I am driving down the freeway and the car starts to cut out however if I shift it will act normal for a bit longer then start again.

    I dont think its my fuel pump as it doesnt die just cuts out. (almost like the car was getting too much fuel not enough air)

    I still havent had time to take my throttle body apart and clean that peice with carb cleaner. (the idle air control valve) would that be the cause of this.

    I am going to have to pull that out and clean that anyway just to see before I can drive home tonight as the car isnt going anywhere if I don't (it will move but I dont want to harm the engine)

    once again any help is greatly appreciated.
     
    lsgheero, Mar 8, 2007
    #1
  2. 86gtscaged

    86gtscaged Guest

    Will it not idle on its own ? When exactly does it happen ? Only on Decel ? Does it happen under load only?
    When is the last time you changed the Fuel filter?
    Injectors been cleaned? Replaced? How many miles???
     
    86gtscaged, Mar 8, 2007
    #2
  3. malodin

    malodin Well-Known Member

    odly enough i have experienced this numerous times on my celi, i finally found the culprit....
    have you messed with your afm?

    my culprit was the little wires inside the afm(under the black cover) were not making very good contact with the black lines and every now and again it would lose contact and the car would cut out.

    Turns out i needed a new afm, cause you cant really bend those little hair like wires back to the board.
     
    malodin, Mar 8, 2007
    #3
  4. Mafix

    Mafix Owner Staff Member Administrator Donated!

    yeah the AFM is the biggest PITA ever. i know i have GE and AT ones but i may have a FE one at my parents. let me know if you need it!
     
    Mafix, Mar 8, 2007
    #4
  5. lsgheero

    lsgheero Well-Known Member

    Will it not idle on its own ?
    It will idle fine. only sputter a bit when i apply gas but then goes fine.

    When exactly does it happen ?
    It happens when driving under normal load I can sometimes fix it if I excellerate or downshift to a lower gear and excellerate. Other times I will have to left off the pedal and then go back on.

    When is the last time you changed the Fuel filter?
    About 2 months ago

    Injectors been cleaned? Replaced?
    They may not sure how to do that or when they were done last

    How many miles???
    160,000 miles
     
    lsgheero, Mar 8, 2007
    #5
  6. lsgheero

    lsgheero Well-Known Member

    Also it my exhaust sounds rougher since this has happened (not smooth like before)

    factory exhaust not A/M
     
    lsgheero, Mar 8, 2007
    #6
  7. malodin

    malodin Well-Known Member

    if you can grab another afm, i have succesfully used ones from camrys as well, as long as its got a 3sfe motor, yes there may be a slight richer or leaner burn(though i doubt it). but it will tell you if that is it, check c/l for someone parting out a 3sfe(or whatever motor yours is)
     
    malodin, Mar 8, 2007
    #7
  8. lsgheero

    lsgheero Well-Known Member

    If i can get the car to take me home and bring me back to work so i can get my check then I can get another AFM from the scrap yard tomorrow.

    just to be clear that is the peice thats on my air intake (the box that contains the air filter)
     
    lsgheero, Mar 8, 2007
    #8
  9. 86gtscaged

    86gtscaged Guest

    No not the piece that has the air filter, Its bolted to that box...
     
    86gtscaged, Mar 8, 2007
    #9
  10. lsgheero

    lsgheero Well-Known Member

    yep the top half of the box with the big metal peice
     
    lsgheero, Mar 8, 2007
    #10
  11. 86gtscaged

    86gtscaged Guest

    Bingo!
     
    86gtscaged, Mar 8, 2007
    #11
  12. malodin

    malodin Well-Known Member

    yah that big metal piece has a small black cover on it, under the cover is the variable resistor unit that measures the flow of air via the flap inside the metal box. that variable resistor is what acted up on mine and is likely acting up on yours.
     
    malodin, Mar 8, 2007
    #12
  13. Mafix

    Mafix Owner Staff Member Administrator Donated!

    actually on the 4th gens the afm does:
    Fuel pump activation
    Air intake temp
    fuel regulation
    most annoying air restriction on the face of the planet
     
    Mafix, Mar 8, 2007
    #13
  14. malodin

    malodin Well-Known Member

    damn, didnt think it did that much. though the main problem is the hairs(wires) that do the resistance to measure where the plate is.
     
    malodin, Mar 8, 2007
    #14
  15. 86gtscaged

    86gtscaged Guest

    what happens if i have my pump on a switch ?
     
    86gtscaged, Mar 8, 2007
    #15
  16. malodin

    malodin Well-Known Member

    the afm would not see the switched response from the fuel pump(dont know if it would do anything though) but the expected response would not be there.
     
    malodin, Mar 8, 2007
    #16
  17. Mafix

    Mafix Owner Staff Member Administrator Donated!

    actually
    the afm acts as a fail safe for the fuel pump. if the car isn't running then the fuel pump wont. that's all that does, it's a safety for accidents.
     
    Mafix, Mar 8, 2007
    #17
  18. lsgheero

    lsgheero Well-Known Member

    speaking of fuel pump do ours make the normal whirl sound when you turn the key to the on position (as far i know its OEM factory fuel pump as I havent changed it). I was told it is suppose to and my freinds does but mine does not. now this could be due to the AFM being bad.
     
    lsgheero, Mar 8, 2007
    #18
  19. Mafix

    Mafix Owner Staff Member Administrator Donated!

    does he have a 4th gen?
     
    Mafix, Mar 8, 2007
    #19
  20. lsgheero

    lsgheero Well-Known Member

    no he has a 199? chevy camaro
     
    lsgheero, Mar 8, 2007
    #20
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