Question about 1987 Jeep Wrangler

1 Answer

No start conditon

I have a 1987 jeep wrangler that won't start or crank i've checked the
battery
alternator
starter
distributor
all in working condition and it still won't start or crank i think it maybe a electrical problem any suggestions

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  • loosechange1 Nov 25, 2008

    1995 wrangler (manual 2.5L) that will not start. i've replaced the battery,starter,ignition switch and starter relay. it will start if i connect a jumper wire directly from the battery to the starter (small terminal). when i turn the key only the starter relay has an audible click. Help this is driving me insane.

  • leahlips26 Dec 15, 2008

    I have the same problem as above guy. The thing ran fine, the altenator went bad, I replaced it; the battery was dead so I jumped it with another vehicle started right up let it run for about 30 min. to charge the battery then shut it off. Tried to start it again and not a thing happened!? It will not click it will not even try to start, my lights dont work, not even my brake lights. Battery is brand new I even had it tested! What the F? help me please... 1987 jeep wrangler 4.2 manual

  • Justin Case
    Justin Case May 11, 2010

    Hey there lucifer823,

    You obviously have some expertise, that will make this easier.

    Questions:


    • When you turn the key to ON, does anything happen? (dash lights, radio work, gauges move, etc.)

    • When you turn the key to START, exactly what happens? (nothing, like there was no battery; clicking from starter; tries to crank, but fails)

    • How did you check the battery? (voltmeter, loadtester)

    • What is the voltage?

    • Did this situation occur suddenly? Warning signs?

    • How did you check the starter?
    Something to try:

    BEFORE TRYING THE NEXT PROCEDURE, DISCONNECT THE NEGATIVE BATTERY TERMINAL. MAKE SURE THE TRANSMISSION IS IN NEUTRAL OR PARK.

    If you are comfortable with doing this (and it sound like you are), run a separate wire (12 ga. min.) to the start terminal of your starter solenoid.

    Reconnect your battery. MAKE SURE IT IS NOT IN GEAR.
    Momentarily connect the wire to a +12V power source (the battery).

    The starter should turn over.

    Get back to me with the answers. We'll get you fixed up.

    BTW, I have a 91 Wrangler. I could tell you some stories.

    Mike





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  • 1,498 Answers

Hey there lucifer823,

Yes, it's electrical.
Let's narrow it down a bit. This procedure will either locate or rule out 90% of starter problems.

Checking Starter function:

  • Run a wire (at least 12 ga w/ alligator clip) to the START terminal (the smaller one, not the battery connector) of the Starter Solenoid.
  • MAKE SURE IT"S IN NEUTRAL OR PARK, IGNITION OFF, SET PARKING BRAKE. Priority one - Safety
  • Make sure you and any tools are clear of moving engine parts. Check again that the IGNITION is OFF. Momentarily touch the other end of the wire to the positive battery post.
  • The starter should turn over. If it does, leave the wire, it will be useful in upcoming tests.
  • If it doesn't, The starter or the solenoid is bad. Pull it.You can bench check the starter with jumper cables. Negative to the body, positive to the heavy terminal on the solenoid that goes to the starter. If the starter works, only the solenoid is bad (good news, they're cheaper). If it doesn't, replace the starter.
  • If it only clicks, the battery is low.
Let me know what you find out. We'll pick it up from there.

Remember: good things come to those who Rate

Mike

Posted on Aug 03, 2008

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