jackdanels
Member
OK I've tried everything, and can't get a sled to run, but first the background
2008 Summit Everest 800 pTek 156" x 3"
Freshly rebuilt, and installed engine
Sled ran up until the engine destroyed itself, and even after that I could still get it to start.
It wasn't until after the new engine when in that it wouldn't start
I've got fuel
NO SPARK
Things I've checked:
Plugs for spark (8X) no spark
Connection to ignition coil (3X) ok
Kill switch (unplugged at handle bar, continuity to gnd on the ECM side, at the ECM plug only when the switch is in the closed position) all ok
Trigger coils orientation (before, during, and after installation) ok
4-wire trigger coil plug and it's wires (5X) ok
5-wire voltage regulator plug and it's wires (5X) ok
Jumped DESS post black wires together (3X) no change
Verified correct RD/BLU & BLK wire orenation at Voltage Regulator plug (2X) ok
Swapped ECM with a known good ECM that has been run on this sled successfully in the past. I will also note that this test ECM failed via budds, but ran for a whole season on the sled in question and just this last season on it's original sled without problem, which is why I don't get too worried if an electrical component test outside of BRP spec
Trigger coil resistance and output test at ECM plug (235 ohms & 0.025 VAC for both)
-Resistance in spec, VAC is low according to the service manual, but I have seen many electrical items test out of spec with these sleds and still run fine. This test also verifies the trigger coil plug connection
ECM plug pin 14 (PWR to ECM) continuity with RD/BLU wire at voltage regulator (1X) ok
Voltage check with RD/BLU wire at diagnostic connector, pin 4 (branched off the ECM power circuit) 2.5 VDC, within spec. Also verifies stator-regulator connection and output
Stator output test (1X) In spec
Continuity to gnd with any of the 3 yellow stator wires (1x) None show continuity to gnd
Ignition coil resistance at ECM plug (1X) Resistance a bit high, but I think still ok
After typing this I realize that I have not checked continuity to gnd from ECM plug at ignition coil signal wire with the lead unplugged at ignition coil. If this wire is shorted to gnd, could be the source of my no spark
Thank you all in advance for any help you can provide.
2008 Summit Everest 800 pTek 156" x 3"
Freshly rebuilt, and installed engine
Sled ran up until the engine destroyed itself, and even after that I could still get it to start.
It wasn't until after the new engine when in that it wouldn't start
I've got fuel
NO SPARK
Things I've checked:
Plugs for spark (8X) no spark
Connection to ignition coil (3X) ok
Kill switch (unplugged at handle bar, continuity to gnd on the ECM side, at the ECM plug only when the switch is in the closed position) all ok
Trigger coils orientation (before, during, and after installation) ok
4-wire trigger coil plug and it's wires (5X) ok
5-wire voltage regulator plug and it's wires (5X) ok
Jumped DESS post black wires together (3X) no change
Verified correct RD/BLU & BLK wire orenation at Voltage Regulator plug (2X) ok
Swapped ECM with a known good ECM that has been run on this sled successfully in the past. I will also note that this test ECM failed via budds, but ran for a whole season on the sled in question and just this last season on it's original sled without problem, which is why I don't get too worried if an electrical component test outside of BRP spec
Trigger coil resistance and output test at ECM plug (235 ohms & 0.025 VAC for both)
-Resistance in spec, VAC is low according to the service manual, but I have seen many electrical items test out of spec with these sleds and still run fine. This test also verifies the trigger coil plug connection
ECM plug pin 14 (PWR to ECM) continuity with RD/BLU wire at voltage regulator (1X) ok
Voltage check with RD/BLU wire at diagnostic connector, pin 4 (branched off the ECM power circuit) 2.5 VDC, within spec. Also verifies stator-regulator connection and output
Stator output test (1X) In spec
Continuity to gnd with any of the 3 yellow stator wires (1x) None show continuity to gnd
Ignition coil resistance at ECM plug (1X) Resistance a bit high, but I think still ok
After typing this I realize that I have not checked continuity to gnd from ECM plug at ignition coil signal wire with the lead unplugged at ignition coil. If this wire is shorted to gnd, could be the source of my no spark
Thank you all in advance for any help you can provide.
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