Question about 1990 Toyota Xtracab

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1990 toyota pickup 22re 4 cyl. no spark.replaced igniter,and coil. tested pickup coil but still no fire

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  • djbobcat1 Nov 14, 2009

    yes, parts were used but from a reliable source. when truck stopped, it was ran through a deep water hole. hasnt run since. Is there any relay that would cause no spark. Also timing chain is good.Thanks.

  • djbobcat1 Nov 15, 2009

    took valve cover off to be sure timing chain and distributor are good. Question, can i test for spark by putting plug against head if ground wire to head is not connected

  • djbobcat1 Nov 15, 2009

    no fire coming out of the new coil to the distributer. How do i test the igniter and is there any relay or anything between the switch and the igniter.

  • djbobcat1 Nov 15, 2009

    no fire from the coil to the distributer. sorry but i dont know how to scope anything. Is there an easy way to test igniter. at this point valve cover is off. hoses are unplugged . Is this going to cause some sensor to prevent spark. also is there there a relay or fuseable link between the switch and ignter. Note, truck quit running after it hit a huge water hole

  • djbobcat1 Nov 15, 2009

    What coler is the wire with juice from switch on igniter plug

  • djbobcat1 Nov 16, 2009

    rechecked with a test light. good power to igniter. good power to coil. Low power in wires that run from igniter to distributer.

  • djbobcat1 Nov 16, 2009

    rechecked with test light. good power from switch to igniter. good power to coil. low power in wire from coil to pickup coil

  • djbobcat1 Nov 16, 2009

    ok, let me explain a little better. this is my sons truck, he rebuilt the moter. Ran fine until he hit a big water hole then died. He said while rebuilding the truck. you could insert the distributer and turn the key on, and while moving it back and forth by hand you could hear a click like the ecu was telling it to fire.You can no longer hear any click. Does this help? thanks

  • djbobcat1 Nov 16, 2009

    my son rebuilt the moter awhile back. he said while rebuilding it you could insert distributer,turn on the key and if you moved it back and forth by hand it would click as if ecu was telling it to fire. it makes no click now, i really appreciate your time and intrest....................

  • djbobcat1 Nov 17, 2009

    im in wv and its dark here now. I rounded up a good multimeter and some specs to test however the test you are having me do is not on the list.Question, tacometer. Is this the same as rpm gauge. if not what is my meter to be set on to test this and is the wire you want me to test the wire from igntier to distributer with the plug on it ? Sorry i sound so stupid about this but this electrical **** is alot different than turning a wrench. Will run ohm tests tomorrow and give you the results........again thanks for your time..bob

  • djbobcat1 Nov 17, 2009

    repy to mass flow sensor..............no spark .......

  • djbobcat1 Nov 17, 2009

    mass air flo..............if its bad ...truck wont run or truck wont fire

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4 Answers

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  • Expert
  • 139 Answers

Hello,
You need to confirm voltage to your ignition system. Do you have power to your Ignition coil or igniter? How did you test the Pick up coil? did you check it for continuity? Or did you check it for a voltage fluctuation. If you use a multi meter on the mv scale and pin probe the two terminals on the pick up coil while cranking you should see a voltage fluctuation from positive to negative and back and forth. That will confirm a good pick up coil if it varys in voltage while cranking. You may also want to confirm the engine is turning the cam shaft ( has the timing chain broken?) while you are testing the pick up coil.
I hope this helps.

Roy

Posted on Nov 17, 2009

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  • Expert
  • 192 Answers

1. Verify the coil and igniter do not lose power during cranking as if the ignition switch were bad.

2. Verify the igniter is getting a good ground through its mounting. If all test good a faulty replacement part may have been installed. The ground wire that runs from the negative battery terminal to the fender gets corroded or broken see if thats the problem. 1. Verify good battery voltage to both sides of the ignition coil.

2. Scope the coil negative to see if it is getting pulled all the way to ground by the igniter.

3. Can also check for about 5 degrees dwell on coil negative while cranking. The Engine Control Module (ECM) . does not create spark on this vehicle. The ECM can only change ignition timing. It cannot cause a no spark condition. hope i helped!!!!!!!!!!!!!

Posted on Nov 15, 2009

  • ryan mcghee Nov 19, 2009

    Are you copletly sure it has no spark, hate to sound rude. alot of times it is a relay.

    At the diagnosis box located under the hood check for battery voltage on the FP terminal during crank.

    Check to see if the check engine light is on key on and stays on during crank.

    Check the EFI main relay. At the diagnosis box check the B+ terminal for battery voltage any time the key is in the on position.
    This will cause no fuel. hope i help you out as much as possible.
    Sorry for sounding like a "brainiac", but it's almost impossible to completly be sure about a no spark condition without a scope...........

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  • Master
  • 1,615 Answers

Signal comes from the computer on these for the ignition pulse. if no signal,check the wire to the PCM. PCM is prabably bad. Check the fuse box for any PCM related fuse

Posted on Nov 16, 2009

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  • Toyota Master
  • 6,826 Answers

I am sure you have done this,but have you checked to see if the rotor is turning in the distributor,when turning the engine over?If it is not,of course,then the timing chain has broken.All these parts were new ,I am guessing,if they where used,they might be defective also,but if they where new good,that is out of the way.Did the pick up coil check out good?If so,and everything else is good,then the computer would have to be bad,unless there is a circuit broken,maybe a start fuse in the fuse box.Most of the time,the distributor replacement fixes these models,almost every time,Make sure the timing chain has not broke.If the parts where used,then this tells us nothing.Try another used distributor,with everything in it,or buy a new one,if the parts you installed where used.Let me know some feed back on this,and if this was helpful.

Posted on Nov 14, 2009

  • 12 more comments 
  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 15, 2009

    I am sure you have done this,but have you checked to see if the rotor is turning in the distributor,when turning the engine over?If it is not,of course,then the timing chain has broken.All these parts were new ,I am guessing,if they where used,they might be defective also,but if they where new good,that is out of the way.Did the pick up coil check out good?If so,and everything else is good,then the computer would have to be bad,unless there is a circuit broken,maybe a start fuse in the fuse box.Most of the time,the distributor replacement fixes these models,almost every time,Make sure the timing chain has not broke.If the parts where used,then this tells us nothing.Try another used distributor,with everything in it,or buy a new one,if the parts you installed where used.Let me know some feed back on this,and if this was helpful.


  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 15, 2009

    Yes,but to be sure,run a wire to the head,or use vise grips to secure the ground cable to the head,any kind of way to fasten the cable.If the timing chain is not broke,and the cam is turning,then there should be a spark,even if it is out of time,as long as the chain is still turning the cam.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 15, 2009

    Check the mass air flow sensor to see that it is still plugged up,If this sensor is not working,the truck will not start,try another mass air flow,if you have access to one.and look inside the one on the truck to see that it is clear,and the air filter,to see that it is not soaked or stopped up.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 15, 2009

    Check to see if there is 12 volts going to the coil,on one terminal,there is really no way of checking the pick up coil,it is part of the module.Make sure voltage is getting to the coil.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 15, 2009

    Check to see if there is voltage to the coil from ignition,on one side,not to the distributor.if there is not voltage to the distributor,then there is a break from the ignition switch to the coil,or the ignition switch is bad.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 15, 2009

    It will change colors from the switch to the coil,but it could be res on the igniter,use a test light and touch the terminals to see if either of the wires lights the test light,if not,that is the problem,see if any of the wires have voltage on them,if there is not voltage getting to the igniter,when the ignition switch is turned on,then it is either the ignition switch,or some where inbetween.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 16, 2009

    O k,then on the check with test light,it should show light voltage from coil to distributor.Now look,at anything low mounted ,where the water could have done something.I am going to do some research for you,and I will return,If you don`t hear from me in ,lets say 15 minutes,email me at roniecon@gmail.com o k?

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 16, 2009

    I am still looking up some things,in my notes,while I do this,Check the oil pressure switch to see that it is still plugged up.Check the ecm on passengers side kick panel,behind the plastic cover,see if the e c m is full of water.There is three fuse boxes on the truck,check,with the test light,and key on,all the fuses.One fuse box,is under the hood,and one is in drivers side kick panel,the other one is behind the glove box.Check all these fuses with a test light,both sides of the fuses,if one side of a fuse does not light,but the other side does,then the fuse is blown,make sure the test light has a good known ground.I will shout in a few,if you don`t hear from me in about 15 minutes email me roniecon@gmail.com.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 17, 2009

    All righty then,if you have a tachometer hook the positive from the meter to the negative side of the coil,the side going to the distributor.And ground the tachometer to the ground somewhere,turn the engine over ,and see what it reads,if you do not have a meter,use a test light,and see if it flshes,or dims like a strobe.Get back with me.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 17, 2009

    You know if this mass air flow sensor is bad,or is not hooked up,it will not run.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 17, 2009

    There actualy has to be air pulling threw it for it to allow tthe truck to run.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 17, 2009

    Bob this is my email roniecon@gmail.com,use it to make it easier,rpm meter,same,the wire you said was the hot going in to the ignition switch that you tested,remmember?Well it is the other wire on the coil.Email me for more information.I am here,no problem.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 17, 2009

    set you r multimeter to rpm,and 4 cylinder.

  • Ronny Bennett Sr.
    Ronny Bennett Sr. Nov 17, 2009

    Yes,if the mass air flow is bad,or it is not plugged in,or it is not connected to the air intake,the truck will not start,if you can barrow one to test,would be a good idea,but lets do the testing first.shout at me.

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