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Thread: 94 4.0 stalling now

  1. #1
    Join Date
    Jun 2014
    Location
    Dundee,Il
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    336

    Default 94 4.0 stalling now

    I replaced my dizzy to block gasket a few days ago, the jeep ran fine until I found out the internal gasket in the dizzy was my leak. I was typing on here in another thread went out and started it, by the time I made it back to the door to grab money and phone the thing died. Never happened to me before. Not sure whats up not, as I said it ran fine up until about an hour ago. Ive been searching and come up with everything from a pick up coil to ign coil to crank sensor....

    It restarts right away, wont allow me to give it gas as it sputters, leave it alone it goes to 1500rpm down to 700 rpm down to zero in under 10 seconds. No other power is lost just ignition.... I dont have much time and need to get this fixed. New dizzy is ordered but need the jeep for work tomorrow.
    Thanks in advance for any and all help.
    I do have a meter to test electrical.

  2. #2
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: 94 4.0 stalling now

    I think the first place to look is what you worked on last. Did you time the distributor correctly? Mudderoy has a thread here somewhere on that
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  3. #3
    Join Date
    Jun 2014
    Location
    Dundee,Il
    Posts
    336

    Default Re: 94 4.0 stalling now

    It never moved, I was very careful when I removed and installed it a few days ago, but it ran fine tuesday and wednesday then today I get 30 seconds of run time, if gas is given it sputters and has the feeling like low power, I did notice a strong puff of fuel smell a few minutes ago when I was checking the CPS wiring.

    I saw the write up its open in a tab but im just not able to pin this one down. I also cleaned and cannot see timing marks at all.

  4. #4
    Join Date
    Jun 2014
    Location
    Dundee,Il
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    336

    Default Re: 94 4.0 stalling now




    I removed the cap the e fan and the mech fan shroud. Set tdc #1 and without moving dizzy it shows im lined up right. Black mark on dizzy if from 2 days ago to mark rotor position which was #1 on cap as well.

  5. #5
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: 94 4.0 stalling now

    Any check engine light?
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  6. #6
    Join Date
    Jun 2014
    Location
    Dundee,Il
    Posts
    336

    Default Re: 94 4.0 stalling now

    Nothing man thats the kicker. My cps is newer the cam sensor had oil on it i cleaned it up. Iac was recently cleaned when i did a tune up in november. Fuel fikter all that good fun stuff but im hearing downstream o2 and or cps....

  7. #7
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: 94 4.0 stalling now

    I would check the TPS. I would rule out electrical and fuel injector stuff.
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  8. #8
    Join Date
    Jun 2014
    Location
    Dundee,Il
    Posts
    336

    Default Re: 94 4.0 stalling now

    Ok.

  9. #9
    Join Date
    Jun 2014
    Location
    Dundee,Il
    Posts
    336

    Default Re: 94 4.0 stalling now

    WOT tps is at 200 and goes up and down from 0 to 200 with plate position.

    Not sure where to go now. Haynes shows an auto shut off relay in the wiring diagram, i had a spare good one and replaced it with same results. I have plenty or fuel pressure no gauge but shot it across the garage with schrader valve plunge. I got a feeling its going into the shop might be more than my tool box can handle

  10. #10
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
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    Default Re: 94 4.0 stalling now

    I am a little stumped too
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  11. #11
    Join Date
    Jun 2014
    Location
    Dundee,Il
    Posts
    336

    Default Re: 94 4.0 stalling now

    Other then the rich smell and dying out it runs well idles very well

  12. #12
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: 94 4.0 stalling now

    Just for giggles, check your cat. Might be falling apart and plugging up the exhaust
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  13. #13
    Join Date
    Jun 2014
    Location
    Dundee,Il
    Posts
    336

    Default Re: 94 4.0 stalling now

    Ill give it a good smacking after work tomorrow i pushed it in the garage til tomorrow. Garage= carrage house no electricity

  14. #14
    Join Date
    Sep 2009
    Location
    Chico, CA
    Posts
    29,847

    Default Re: 94 4.0 stalling now

    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    lockers
    And a bunch of other stuff

  15. #15
    Join Date
    Jun 2014
    Location
    Dundee,Il
    Posts
    336

    Default Re: 94 4.0 stalling now

    Thanks man i appreciate it.

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