johnelway
Expert
How can i test the coil?
The problem exist since i purchase the sled stock 3 year ago. I installed lot of stuff after that triyng to fix the problem but never found it.
fxnytrortxkid
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I'm down to thinking its a ground of some sort of vaccum leak. Since I've replaced valve and harness and ecu and no change
GYTR GEARHEAD
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vaccum leak [emoji106] when you say vibration at high rmp you mean coming from the engine lost of power or bogging ?she might be runing lean due to vaccum leak and that vibration is actualy pinging sort it out before it cost you a motor
GYTR GEARHEAD
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to test your coil you need a multi-meter set it to ohms take resistance reading cold and hot compare to spec
johnelway
Expert
Just had an idea... please let me know if it right?
Does the ecu read the engine temp at the thermosensor? It is possible that the ecu adjust the fuel mixture due to a bad read of the temp?
What do i need to check? already seen this?
Because the engine seems to run too rich when idling. it's also not really stable, like if the ecu trying to adjust the a/f ratio.
Does the ecu read the engine temp at the thermosensor? It is possible that the ecu adjust the fuel mixture due to a bad read of the temp?
What do i need to check? already seen this?
Because the engine seems to run too rich when idling. it's also not really stable, like if the ecu trying to adjust the a/f ratio.
Last edited:
johnelway
Expert
just did some test.
4.75v steady from the plug main harness.
tested the resistance from the sensor. nothing.
it is normal? can somebody test the resistance from the white connector just on the back top of oil reservoir?
canoehead
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What year Nytro is it?
Have you checked the harness that runs behind the primary? It rubs on a casting nub and grounds to the block.
Have you checked the harness that runs behind the primary? It rubs on a casting nub and grounds to the block.
johnelway
Expert
2010. no nub and no rub!
Slowey
Extreme
I have a 2010 XTX as well and I noticed mine doing the same thing. I changed the exhaust donuts and changed the plugs and its back to normal. I know that my sled is really picky about plugs. Once one plug started to foul it would act up intermittently. Chganged the plugs one by one and once i found the fouled plug it would pick back up. I hope this helps ya out.
