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  1. S

    I'm done with the jeep

    Well I give up. I can not figure out why this thing idles fast when warming up.(now between 1500 and 1900) I have check all the sensors replaced the o2 with a new one, checked for bad wires and nothing. Nobody around this town knows anything about jeeps and it's renix French shit. I think i have...
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    O2 sensor??

    I have a 89 4.0L I have been testing all the sensors today and all seem to be ok according to the Chiltons manual exept the O2. It say's the voltage should be fluctuating .40 and .06. Mine tests about 4.8 to 5 volts. Is this possible?
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    Starter Relay

    What color wires go to the relay?? The relay is marked F, SOL, I and G. I'm have a problem with starting my 89 4.0L Jeep, I go to start it and nothing I have power to every thing else but the starter does not engage. I keep trying then all of a sudden it starts working? I replaced the relay...
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    stupid idle probs!!

    It's 50 degrees out why does this thing want to idle at 1500 for an half hour?!?!?!
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    4.0l high output in a 89 sport??

    I can get a 4.0l high output motor for really cheap, What I need to know is what do need to change to put this motor in my 89 4.0? The motor came out of an 90's Jeep. Do I need the computer for the 90's Jeep or will the engine run with the existing computer my 89? Thanks
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