M8 won't run need help

M

m8nightfire

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Dec 31, 2007

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Wrangell, AK

• Dec 3, 2009

• #1

I have an 08 m8. It's had all the ecu updates and I'm running an slp pipe kit and bdx intake. I started the sled after sitting all summer on a cold morning and it fired up fourth pull ran great loaded it up no problems. Shut it off started it back up a couple more times working flawless. 6 hours later I uncover and go to start it and it doesn't want to start. Ripping the pull cord out of my hands like it's trying to fire the other way? Get it started and it runs really ruff. Will idle for a couple seconds at times and for couple minutes at other times. Gives me a temp sensor fault one minute and a faulty ingition coil the next. Also throws intake sensor fault. If I give it any throttle it dies. Doesn't try and rev up nothing. If I let go of throttle quick enough it will idle back up but at times just backfires and dies. Checked tank for water and it's spotless. Any suggestions or advice would be great thanks. -Curtis

 

89sandman

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southern oregon

• Dec 3, 2009

• #2

maybe check the intake sensor and make sure it is mounted in the bdx intake?

 

K

kane13

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Nov 10, 2008

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B.C.

• Dec 3, 2009

• #3

Maybe the mice found a new home, did you plug your exhaust before storage? Otherwise maybe a electrical or timing issue. Jmt

 

C

carpainter29

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Oct 12, 2008

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Sioux City, Ia

• Dec 3, 2009

• #4

We had one do this last year. The connectors for the computer, hood etc had condensation in them. Pull em apart, blow em out and see if that helps.

 

mmsports

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hubsperformance.com

• Dec 3, 2009

• #5

Sounds like mosture.

This sound like most likely use dielectric in plugs it is some sort of short.

carpainter29 said:

We had one do this last year. The connectors for the computer, hood etc had condensation in them. Pull em apart, blow em out and see if that helps.

Click to expand...

 

D

diggerdown

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Apr 25, 2004

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Deer Park Wi.

• Dec 3, 2009

• #6

Like the others said, check you wire plugs and also check your grounds.

 

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m8nightfire

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Dec 31, 2007

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Wrangell, AK

• Dec 3, 2009

• #7

Alright I'll check the plugs. I've unplugged them to "reset" the computer but no luck. Last year I had moisture in the plugs and I dielectric greased every plug so I'll clean em out with wd and compressed air and dielectric it again. Thanks everyone for your help. -Curtis

 

0

08nightfire

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Oct 10, 2009

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NW Iowa

• Dec 9, 2009

• #8

What did you figure out? I fired mine up tonight and is doing the same thing.

 

WyoBoy1000

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Red Lodge MT to North, CO

• Dec 10, 2009

• #9

It sounds like a throttle saftey switch other than the codes coming up.

 

Speeedracer

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Kanasas

• Dec 10, 2009

• #10

what does that throttle safety switch do? Is that the piece inside the throttle block behind the plastic piece, has a little 'button' on it that pushes in? My sled this past weekend would intermittantlyh die......then start right back up, or sometimes never completley die.....and then start up. Obviously eletrical.......kept unhooking stuff until the wire inside throttle block fixed it, what is it? Do I need it?

sorry to hijack your post!

 

WyoBoy1000

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Red Lodge MT to North, CO

• Dec 10, 2009

• #11

Speeedracer said:

what does that throttle safety switch do? Is that the piece inside the throttle block behind the plastic piece, has a little 'button' on it that pushes in? My sled this past weekend would intermittantlyh die......then start right back up, or sometimes never completley die.....and then start up. Obviously eletrical.......kept unhooking stuff until the wire inside throttle block fixed it, what is it? Do I need it?

sorry to hijack your post!

Click to expand...

that would be the one. sometimes the throttle cable will pull out of the hand throttle just enough to set of the switch. It usually also causes a little higher idle too. I have seen it happen from turning the bars real far pulling on the cable, throttle twisting or bouncing yourself off the bars.

 

P

pitman247

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Feb 9, 2009

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3

• Dec 14, 2009

• #12

have you found out what it is yet i had kinda the same prob with mine, it was the y pipe pushing down on the heat plate underneath it and rubbed through the wires of the injector and shorted it out and wouldn't run

 

D

deaner.6

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Feb 12, 2009

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Grande Praire alberta

• Dec 15, 2009

• #13

check the fuse buy the silver box next to the ecu it should be 15 amps not sure but if wires melted you have to find those first i had this problem when i changed my air box to a black diamond box and i didnt secure the wires they fell on my pipe and blew the fuse.

 

T

TnT18

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Dec 14, 2009

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• Dec 15, 2009

• #14

Sounds like your fly wheel key is sheared.