Question about 2002 Jeep Wrangler

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Swaped stock 4.0L with a 4.6L Stroker, engine only idles

2002 Wrangler 4.0L, swapped engine with a new Titan 4.6L Stroker.
New cam and crank sensors, 4 new o2 sensors, new 24lb injectors, new 62 mm throttle body, new Banks Headers, K&N cold air intake, new ignition coil, new map sensor, new throttle positioning sensor. 3 new "cats".
Engine will start with a flick of the key,and idle all day......once you try to add a little throttle,the engine will die.
Borrowed a computer from another 02 Wrangler, same problem.
Cleared all ''codes'' on the computer. Checked and rechecked all grounds. Fuel pump is putting out 46 pounds.
I do however think this is a problem with the ''computer'' not being able to ''read'' the new, more powerful engine.

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  • bunjims Nov 21, 2008

    I have a Snap-On "Soulis". I get the trouble codes for "Ignition Coil 1-2-3"......I've installed a new ignition coil, it's the "rail type" that fits over the spark plugs.



  • bunjims Nov 22, 2008

    Okay.....how do I go about correcting the "fuel/computer related incompatability"? I have no idea....any suggestions?

  • Just Jeeps
    Just Jeeps May 11, 2010

    do you have a code reader? if so are you getting any trouble codes?
    sounds like a fuel delivery problem to me..
    sounds like you have replaced all the sensors it has to be Fuel/Computer related incompatability


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Let me know if it works out

Posted on Nov 21, 2008

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