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post #41 of 50 (permalink) Old 09-10-2010, 03:31 PM Thread Starter
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When I clear it , it comes back when the sled dies.
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post #42 of 50 (permalink) Old 09-10-2010, 04:33 PM
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I have another thing you can check.
The thin black wire from the CDI seems to be grounded when you turn the key to off position when I look at the wiring diagram.
Maybe the key mechanism is broken and grounds the CDI output wire?
To test this I think you can start the engine and then disconnect the cables on the backside of the key mechanism.
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post #43 of 50 (permalink) Old 10-05-2010, 05:46 PM Thread Starter
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OK !!!!! Its running !!! Now the details. I thought it was losing ground. I was sitting beside the sled thinking about a small , accidental fire , when I heard a relay click off. After some testing and checking wires , I grounded the GREEN W/ WHITE STRIPE wire that runs from the shutoff relay to the small computer plug directly to the battery. Its been running for over 45 minutes now !!! Can anyone tell me where my problem is now ? I realize I will need to install a switch otherwise it'll stay in ready mode all the time , right ? Can I do it this way ?
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post #44 of 50 (permalink) Old 10-05-2010, 07:19 PM
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On my cousin's sled (92 indy 500 EFI) there is a small wire that grounds out on the battery, and is probably the same wire you mentioned. His functions normally and has no switch on the wire and the ready light functions as normal also.

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post #45 of 50 (permalink) Old 10-05-2010, 09:20 PM Thread Starter
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I left everything hooked up for a half hour while I repaired a cracked windshield. Wind slammed the hood shut and cracked the windshield. Anyway , the ready light was still on , so I need some sort of shut off for the ground to keep from killing the battery. But I'm just so D*mn happy to have it run for more than 6-8 minutes.
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post #46 of 50 (permalink) Old 10-05-2010, 09:54 PM
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Quote:
Originally Posted by snowbound View Post
I left everything hooked up for a half hour while I repaired a cracked windshield. Wind slammed the hood shut and cracked the windshield. Anyway , the ready light was still on , so I need some sort of shut off for the ground to keep from killing the battery. But I'm just so D*mn happy to have it run for more than 6-8 minutes.
I bought my 93' RXL 650 with a toggle switch just before the battery , the guy said the battery would get drained without it ,so turn on switch all is good ,when shutting down machine shut toggle switch to off so there is no battery drain? Hope this info helps a bit for ya ? Sounds like your on the right track.
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post #47 of 50 (permalink) Old 10-06-2010, 09:21 PM
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I had an Arctic Cat do the same thing. It was the wire harness that went from the stator to the ECM and Battery. There was an intermittent short in the wire loom. i finally got lucky and tugged the right wire and it slipped out and showed its ugly self!
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post #48 of 50 (permalink) Old 10-10-2010, 02:53 PM
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I havent been online all summer but today I decided to read this thread from the beginning......

The wire you are grounding (green/w) is the signal from the computer which is supposed to keep the relay energized as long as the key is on and then for a short time after it is turned off on a 92........


93's are a bit different as the computer looks for an input from the ACS rathar than the key switch to know when to keep this relay activated or not.

You posted that your problem began after installing a used computer......... I am wondering if you installed a 93 computer in your 92 sled which would then be looking for the ACS signal and since your 92 is not equipped with an ACS would not find it so it would just time out .

Actually the computers are the same between the two sleds but the eprom inside (which you can change from your old computer) contains the different programming which could be your problem.........
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post #49 of 50 (permalink) Old 10-10-2010, 08:11 PM
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If you needs parts i made my 92 EFI into a non efi with a 90 motor. I have all the parts for the efi but the fuel pump.

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post #50 of 50 (permalink) Old 10-11-2010, 08:10 AM
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You posted earlier (post # 33) that you had the battery froze and the ECU failed, so you installed a USED computer and this is when your timing out after 8 minutes problems started.
Remove the cover from your computer and have a look at the chip. the chip contains the programming specific to the model year of the sled and will effect how the computer works with your sled.

It should have a tag to identify it. The 92 500EFI chip is FSM752. If your chip is marked FSM762 or FSM782 you need to replace it with the original chip. As I mentioned before later versions of this sled were programmed to time out and shut down whenever there is no signal coming from the ACS. The 92 sled did not have an ACS so there would be no signal to the computer so naturally it would just keep timing out and shutting down just like you describe.

This scenerio didn't occur to me right away because I must have missed your post about replacing the computer when this started to happen the first time I responded to the thread and also you mentioned you had tried another computer with the same results. I am guessing you tried another computer which was also from a 93 or newer sled which of course would act the same way.
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