Question about 1991 Jeep Wrangler

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I have a 94 jeep wrangler 4.0 and I am having problems with the starter. When I turn the key All I am getting is a click in the breaker box. I have 12.5v in the all the way to the starter and I am able to arch the starter and it fires right up. Someone said the soleniod but I dont think this model has one. Does anyone have a answers to this problem. Thanks Steve...

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Hi Steve,

Yes, you have a starter solenoid. It's a small cylinder shaped device mounted on the starter. There will be a large cable and a smaller guage wire going to it. It has two functions. It acts as a power relay providing voltage to the starter and applies the force to push the starter gear to engage the flywheel.

What you arc'ed had to be the solenoid. If it was just the starter, it would've spun without engaging the engine.

So you've already narrowed down the problem to the smaller guage wire. This wire is energized when you turn your key to the Start position (normally).

If your vehicle has an alarm with a starter kill option, it could be malfunctioning.

You can comment me back with some more detail to solve the problem. But in the meantime, If you want a quick fix, here it is.

Run a wire from the smaller gauge terminal on the solenoid to inside the vehicle and attach it to a momentary switch. Attach the other side of that switch to a +12VDC power supply. Turn your key to the On position. Click the switch and your engine will start.

That way at least you will have the use of the vehicle while you find the real cause of the problem.

Get back with me, let me know how it goes.

Happy New Year and Best Regards,
Mike

Posted on Jan 01, 2009

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It could be the starter relay, it will the small black or gray box that is clicking in your 'breaker box' it is about 1" square. Or it could be the solenoid, it will either be separate from the starter or on the starter itself. You should be able to look up a list or parts, if no solenoid is listed then it will be on the starter and just replace the whole thing. Check the relay first they are cheap and you may have an identical one in the box that you can swap it with to test.

Posted on Jan 01, 2009

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SOURCE: 94 jeep wrangler 4.0 starter problems

there should be a small and a big wire to the starter the big one should have a constant 12volt and the other is the control circut. with a multi-meter conect your ground and put the pos leed on the control circut at the starter and have someone turn the key (WITH THE E BRAKE ON,NOT IN GEAR as to not get ran over if this involves being under you jeep) with the key on start (turned all the way) you should read a 12volt signal if not fallow back to your relay looking for a open-circut.

Posted on Dec 29, 2008

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