2000 Maxima no spark.






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  1. #1
    Registered User 97mustanggton18s's Avatar
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    2000 Maxima no spark.

    A friend of mine has a 2000 Maixma(180k on it) that isnt getting any spark. The crank sensors and cam sensor are good and I am getting fuel. At this point im thinking it can only be the ecu,wiring harness, or anti theft. I dont think it is the anti theft because the light isnt coming on when cranking. If anybody has any thoughts I would appriciate the help.Thanks, John

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    Registered User 97mustanggton18s's Avatar
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    THe car was running good before it all started. His sister went into a store and cam back otu and it wouldnt start, just turn over. The spark plugs are wet with fuel and you can hear the pump prime. There arent any codes in the computer. I have a solus and hooked it up and I can see engine rpm and other inputs coming it.

    I read about the the harness was hoping someone can smaybe shed some more light on that issue. The harness has never been removed, and doesnt seem to be broken, but then again I havent removed the wire loom from around it.Just for grins I ruled out it being a key by trying another one...no luck.

    I pulled the front three spark plugs and they were soaked with fuel. I put a new one in and layed it across the valve cover to see about the spark. I turned it over a few times and it only sparked once the entire time. I tryd this once with each of the three coils and and didnt get anything on the either.

    I also heard about the evaporator leaking on the ecm, so i took a look back there...dry as a bone.

  3. #3
    Blah Blah Blah Z350man's Avatar
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    This is going to sound REALLY dumb... but loosen and clean the trans bolts and then re-tighten them. (Yes I am serious)

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    Registered User 97mustanggton18s's Avatar
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    Funny you bring that up, the trans was just out of the car about 300 miles ago due to the front trans seal leaking. Is it common for them to cause a poor ground?

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    Registered User 97mustanggton18s's Avatar
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    Well today I took some jumper cables from the engine to the battery for the ground...still no spark. I cant seem to find where the ignition relay is to swap it with a known good one. I pulled back a small section of the wire loom and didnt see anything with the wiring harness, but then again I didnt inspect it that much.Im still trying to figure out what im going to do as of right now.

  6. #6
    Blah Blah Blah Z350man's Avatar
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    IF it is the tranny, that will not work. It is a grounding thing with the ecu/engine/tranny. i would loosen the tranny bolts, make sure there is a good contact between bellhousing and block and tight the crap out of them.

    Quote Originally Posted by 97mustanggton18s View Post
    Well today I took some jumper cables from the engine to the battery for the ground...still no spark. I cant seem to find where the ignition relay is to swap it with a known good one. I pulled back a small section of the wire loom and didnt see anything with the wiring harness, but then again I didnt inspect it that much.Im still trying to figure out what im going to do as of right now.

  7. #7
    Blah Blah Blah Z350man's Avatar
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    make sure you did not disconnect anywires when you took the tranny out as there are several you could miss on the driver side that would cause it to lose fire.


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