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Does a 2004 jeep grand cherokee have and fuel cut off switch?

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  • Junior Silmon
    Junior Silmon Dec 15, 2016

    Where is electric relay located?

  • redinak Dec 15, 2016

    Computer controlled so look for shutdown relay or fuel pump relay and fuses in power distribution center (fuse box) near battery.

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2 Answers

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  • Contributor
  • 11 Answers

No shutoff switch they will have an electric relay.

Posted on Dec 15, 2016

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  • Jeep Master
  • 20,706 Answers

There is no inertial switch like fords
but all cars by law the PCM is programmed to cut fuel for many reasons. i can list them there are up to 8,.
the ASD relay controls this. and more, read...
if you had scanned the PCM you'd would have found out why already. fuses not blown.
why not post the symptoms first and not a hunt>?
my guess is engine stalls or will not start but cranks ok.
and the CEL glows key on , in the cluster,

http://jeepdied.com/ASD.html

the fuel cuts, are USA laws, most of these are
to stop Crash and burn as seen on TV.


Ill add 2 more
the PCM is programmed to cut fuel at WOT cranked
this is a feature, called UNFLOOD Mode, as covered
in the operators guide.
that means if you had a bad TPS , that was stuck
at 100% throttle (4-5vdc) the ECU cuts fuel.
BY DESIGN!
(be that shorted wires, or bad TPS)
all gas engine PCM/ECU cut fuel if it senses dead spark or dead tachometer. (DTC for sure)
all gas engines EFI works like that.
Jeep adds to the mix.
(immoblizer is one)
VTSS,VTA,SKIM, immo (most GC have it)
is your IMMO lamp glowing? or flashing.???
this lamp is first.

Posted on Dec 16, 2016

  • 2 more comments 
  • _-__-___-_
    _-__-___-_ Dec 16, 2016

    where is the ASD, well its in the fuse box.
    which one,

    well its in the free book.
    seen here.
    RTM? click WJ jeep herehttp://www.morris4x4center.com/knowledge...
    where.
    in the PDC
    open hood
    open PDC lid
    see lid, see names on lid, bingo.
    page 8H-5 (8w is all schematics.)

  • Anonymous Dec 16, 2016

    step 1, battery fully charged
    step 2, key on, CEL glows, SKIM lamp off.
    skim glows and goes out. you then crank
    skim stays off. (lamp)
    all fuses ok.
    step 3, it dont start connect scan tool and bingo.
    cranking it for 5 full seconds,
    this lets the ASD time out lapse and you can then get failure DTC telling you who cause the ASD to drop.

  • Anonymous Dec 17, 2016

    if no DTCs set, I bet they are.
    but if non set,
    id go with zero fuel pressure in the fuel rail or pathetic low, ever use a fuel gauge?
    (hand gage)?
    all this based , my wild guess.
    engine will not start.
    engine spark plugs tips dry.
    right, see how fact matter?
    telling what's up first, then ask what to do next is 100x better>?
    yes, I know guys never ask for directions.

  • Anonymous Dec 21, 2016

    short answer
    the ignition key is the fuel cut off.!!
    answer 2
    all EFI cars cut fuel for many reasons
    on most cars its called the main relay and fuel pump relay
    on jeeps it's ASD relay and fuel relay.
    the ASD cuts for 1 to 8 reasons
    you failed to scan it so work with facts.

    hopeless
    scan it. and win.

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