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Old 11-09-2010, 05:45 PM
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Hmmmm

'93 YJ, 4.0L, automatic trans. Here is my situation. This AM, I started her up with no problem, let her warm up for about 4-5 mins and drove to the store. Getting back in she wouldn't start. I've already pulled both the positive and negative terminals and cleaned post and terminal with a wire brush (they shine now). I've also chased the power wire to the starter and checked for corrosion and wire brushed all the grounds (including the block and tub grounds). Gauge is showing 13-15V. Only sound I get is a single 'click' from the starter (which I pulled an had tested about an hour ago, it's fine). On the advice from another post I read I even swapped the relay with a working one and still the same...only 1 click and no start! Am I missing anything short of replacing the main power wire from the positive terminal of the battery? Any ideas and/or advice is appreciated.

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Old 11-09-2010, 05:55 PM   #2
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'93 YJ, 4.0L, automatic trans. Here is my situation. This AM, I started her up with no problem, let her warm up for about 4-5 mins and drove to the store. Getting back in she wouldn't start. I've already pulled both the positive and negative terminals and cleaned post and terminal with a wire brush (they shine now). I've also chased the power wire to the starter and checked for corrosion and wire brushed all the grounds (including the block and tub grounds). Gauge is showing 13-15V. Only sound I get is a single 'click' from the starter (which I pulled an had tested about an hour ago, it's fine). On the advice from another post I read I even swapped the relay with a working one and still the same...only 1 click and no start! Am I missing anything short of replacing the main power wire from the positive terminal of the battery? Any ideas and/or advice is appreciated.
after cleaning the batt cables your batt might not have enough juice to turn the engine, otherwise I would try replacing the batt cables first before moving on to other pieces (remember start cheapest parts first then more expensive). If there was any corrosion in between the batt cables and the batt posts you may have corrosion in your batt cables themselves. You can try twisting the battery cables while someone else tries to start the jeep (be careful when doing this use common sense) see if you can break some of the corrosion thats inside. I had a similar issue my batt terminals were clean but the corrosion inside the batt cables were still preventing me from turning the engine.

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Old 11-09-2010, 05:56 PM   #3
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If it clicks then its getting power. I would say the starter solenoid. You had the starter checked and it was fine? Does it happen to have oil or dirt around where the starter bolts on? The only time I've seen anything like that happen was that the starter its self wasn't grounding properly because of oil and dirt.
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Old 11-09-2010, 06:12 PM
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Originally Posted by wasomma

after cleaning the batt cables your batt might not have enough juice to turn the engine. If there was any corrosion in between the batt cables and the batt posts you may have corrosion in your batt cables themselves. You can try twisting the battery cables while someone else tries to start the jeep (be careful when doing this use common sense) see if you can break some of the corrosion thats inside.
I thought about this also, all contacts are clean and shiny. And after trying to start while twisting the cable didn't work. But thanks for helping. I do appreciate it
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Old 11-09-2010, 06:18 PM
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Originally Posted by mcgyver1467
If it clicks then its getting power. I would say the starter solenoid. You had the starter checked and it was fine? Does it happen to have oil or dirt around where the starter bolts on? The only time I've seen anything like that happen was that the starter its self wasn't grounding properly because of oil and dirt.
After pulling the starter I had just a little bit of grime on the inside, but nothing compared to the outside casing of the starter. When they tested the starter they let me see it in progress and the selenoid popped the gear out like it should. Kinda frustrating having chased down all the easy fixes and still only having it 'click' once.
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Old 11-09-2010, 06:26 PM   #6
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I had the same symptoms, and also had the starter tested twice. I replaced it anyway, and haven't had a problem since. That was last February.

Was the starter tested under load?
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Old 11-09-2010, 06:56 PM   #7
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I don't remember seeing in your post...did you load test the battery or try to jump start it from another battery? Battery could look good until a load is put on it. Could produce enough juice to trip relay but nothing else.
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Old 11-09-2010, 07:44 PM
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Originally Posted by markharmon
I don't remember seeing in your post...did you load test the battery or try to jump start it from another battery? Battery could look good until a load is put on it. Could produce enough juice to trip relay but nothing else.
I did try to jump start it both before I took off starter and cleaned all the contacts, and after all the cleaning, but still only one 'click'. I've been told by my used Jeep parts guy that it could be the ignition switch inside the steering column, so as soon as I tow it back to the house, that's gonna be my next step.
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Old 11-09-2010, 07:46 PM
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Just want to thank all the above for responding and helping out. That's why I like this forum. And when I get it figured out, I'll make sure to post up what it was!! :-)
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Old 11-11-2010, 08:19 PM
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UPDATE!! Brand new starter and new relay, still won't start. I did notice a slight bulge in the positive side battery cable that goes to the starter, so tomorrow I'll replace that. Other than the ignition relay plunger in the steering column, I'm running out of things it could be
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Old 11-11-2010, 10:01 PM   #11
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UPDATE!! Brand new starter and new relay, still won't start. I did notice a slight bulge in the positive side battery cable that goes to the starter, so tomorrow I'll replace that. Other than the ignition relay plunger in the steering column, I'm running out of things it could be
dude replace both battery cables im telling you
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Old 11-11-2010, 10:14 PM
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dude replace both battery cables im telling you
That's on the list. I'm going to use a clamp style terminal only because an OEM from Jeep is $114.00... OUCH!!
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Old 11-12-2010, 01:36 AM   #13
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That's on the list. I'm going to use a clamp style terminal only because an OEM from Jeep is $114.00... OUCH!!
What? I got my replacements from napa for 20 bucks
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Old 11-12-2010, 03:36 PM
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What? I got my replacements from napa for 20 bucks
On my set-up, the positive cable from the battery has two wires directly from the post terminal. One goes to the fuse/relay box just in front of the battery. The other goes directly to the starter. That exact cable style is pretty pricey. I ended up doing this...

The smaller gauge wire to the fuse/relay box was fine. The other going to the starter had the slight bulge and you can see and feel where it had been hot and started to melt the plastic shielding. After replacing that compromised wire and replacing the terminal I buttoned everything up and tightened all the connections, then tried to start her up again... NOTHING!! One single click. Talk about frustration!! Grrrr!!

So I checked and re-checked all the wires and couldn't see why I wasn't getting a proper connection. Then while looking at everything from a different angle I noticed a wire from under the fuse box that looked off color. A quick check there and I found the culprit. Apparently there was a wire that goes from the fuse box to the ignition relay that had the shielding compromised at some point and had moisture get into it and corroded the wire. Then when it heated up it broke the connection. A little length of same gauge wire and 2 waterproof connectors and she started right up. There is a lesson to be learned from all of this I think. Asking for assistance is a great opportunity to learn something new. And even though I replaced damn near everything it was a simple 4" piece of wire that was the problem, but I never would have seen it had I not taken a step back and looked at things from a different perspective.

Thanks to everyone who responded with their thoughts and input the last few days. I appreciate it!!
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Old 11-12-2010, 03:44 PM
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Oh, and I've decided to keep the new un-needed starter for a couple of reasons. One of which is that the starter I pulled out looked to be original from '93, so it could go at anytime. The other is that I've replaced the alternator, battery and now the starter, so I figure the more expensive electrical parts are new and anything that does come up in the future should be relatively inexpensive to deal with.

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