2003 700 EFI Timing Sensor Ohms Reading - HCS Snowmobile Forums

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Old 01-05-2020, 04:14 PM   #1 (permalink)
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Default 2003 700 EFI Timing Sensor Ohms Reading

Hello,

My Timing sensor ohms out at 95ohms but books says 190ohms? I've read different opinions. Is this ok?

Rest of Stator reads fine.




I'm trying to nail down an issue with this motor. Hits 7200-7400 and just flattens out. With jump to 7900 but no power really after 7000 or so.




Manual Power Valves from STM. With resister clip on wires. I ohm'd out the wires back to ECU just to be sure.
Fuel Pressure is good at 45-46psi.

Volt Reg Is new. Made no difference.
Swapped out ECU - No difference
Checked TPS with ohms readings.. Need to build test tool but seems to flow evenly with no gaps and runs perfect to 7k then hits like it has a rev limiter or maybe it sin limp mode but thought I'd see an error on speedo? Engine light or something.

Is there a way to tell if i'm in limp mode?



thanks,
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Old 01-05-2020, 09:10 PM   #2 (permalink)
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I replaced one of those timing pickup sensors once on a firecat 600 because it was out just like that, like 100% out, 90 vs 190..... And it made no difference. Then I put the 90 ohm "bad" one on a second sled, and that sled ran perfectly. I found a worn wire down behind the oil tank, can't even remember what the went too.
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Old 01-05-2020, 10:26 PM   #3 (permalink)
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Thanks. I'm leaning to it not being the issues. I've read other accounts of the same thing.

So few things left that could cause it.

I have a new wiring harness i could try if all else fails.
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Old 01-09-2020, 09:00 PM   #4 (permalink)
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Just to be sure i bought one off ebay fairly cheap. It was 98ohms. So my guess is that the manual is wrong.

Tested TPS and its adj well with no dead spots and within tolerance.
No idea what the problem is
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Old 01-10-2020, 10:45 AM   #5 (permalink)
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Not sure how long you have had the sled to know these things also can make your sled do what your saying but, depending on when the issue started it could be clutching, secondary bushing could be wonked, primary if its been replaced with a later one the weights can be wrong or missing set screw and sticking or also fuel pressure too much or too little.
It may not necessarily be electrical
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