Question about 1992 GMC Sierra K1500

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Engine won't spark' distributor's ohms OK

Engine won't spark

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  • TANGOPAMPA Jun 24, 2009

    Electrical problem

    1993 Toyota Corolla 4 cyl Front Wheel Drive Automatic 180000 miles

    1993 toyota corolla dx wagon
    does not start.

    Stalled while driving, has not started since.

    Ignition fuse blows.30Amp in engine bay.

    Checked for shorted wires, could not find.

    Disconnected alternator and starter, still blows fuse.

    disconnected distributor, still blows fuse.

    Checked starting switch, 0.5 ohm

    checked distributor

    coil 1ary resistance 1ohm, secondary, 11kohm

    pickup coil,says .200 and .400(G-G+ and NE-Ne+)

    checked Te1E1 diagnostic, no check engine code at all.

    Is it a bad relay?. Tomorrow i go to junkyard to get relay, fuse box,
    distributor and more 30 amp fuses( blew 10 already testing).

    Will appreciate any fresh ideas. Thanks.

    ps. had an aftermarket alarm; discoinnected all spliced in wires
    and reconnected ignition key cable that was cut to install alarm. alarm
    is a chapman(probaly 10 or more years old).

    ps2. now the fan turns on(and of course coolant is cold, since it won't start)

    Someone suggested I check the radio for a short there( thanks for the idea). I will check that.

    It makes sense. i already had a similar electrical problem with another car.
    I was installing a stereo and when i turned on the ignition, it would
    start blinking on and off. Turned out to be that i forgot to untie some
    cables I had shorted in the turn signal light( I was repairing the left
    fender and the cables were tied together).

    ps. forgot to mention the starter is working. turns engine. but no
    spark in plugs(tested with those flashing spark cable light tester).

    could not check if fuel is sent because the fuse blows.

    How can i test fuel pump ( maybe disconnect and send test lead to +.

    How could i test if starter has a relay that is no working right( does it have a relay inside the startert unit?)

    Any more ideas are welcome(im already at the point of bANGING MY HEAD TO A WALL)

    ps. sorry that I posted the car in the wrong make and model. It is not a gmc sierra, it is a 93 toyota corolla.



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  • 245 Answers

If you are getting no spark you have 3 different things that could be your problem #1 would be the coil. #2 would be the ignition module located inside the distributor. #3 would be the crank position sensor the last one would throw a code and turn on your service engine soon light.

Posted on May 25, 2009

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Thanks for your help I'll try thisand see what happens.

Posted on May 26, 2009


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If you have a multimeter, you can measure at the thin leads coming out of the distributor on the Ohms scale. Disconnect and measure across them. They will typically have ~1,000 Ohms resistance but could be higher and still be OK. If it measures very low (<10Ohms) or very high (10,000 Ohms) the coil is defective and these are normally separately replaceable.
If you need to replace it; 'shop' it, the prices are all over the map on this thing.
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