one crank wonder

Energy One
R

redned

New Member
Have a K-9 that will crank over one time then both turn lights flash,on off button will reset to do the same thing again CR s work but power is lost on green wire on starter help......
 
Marky-Marc

Marky-Marc

Well-Known Member
redned said:
no , battery is good,
Click to expand...
How old is the battery? What brand is the battery? Even if it's new, remember it could have been sitting on a shelf for months before you bought it...

What voltage are you getting off the battery when the ignition is off? When key is on, what is the voltage?

When you hit start, how low does the voltage drop? As said above, if it drops below 10 volts when trying to start, ecu will reset.....

Your run on/off is resetting because it 'thinks' you turned the key off, ergo, low voltage on battery.....
 
S

Sven

Well-Known Member
WATT baylor said. I want a volt meter at the battery posts. I set the meter on the tank, hit the starter and watch the battery being pulled down to 9v say. It has to come back to 12.4v or better you let go of the starter button. Under 11v = Battery.

I first have to eliminate the very first thing is I just road the bike yesterday, so I know I have compression, I know I have fuel, I now have to think spark (battery) as someplace to look in the most simple of steps to eliminating one of 3 variables; I'm on the side of the road is whom be fucking wit me?
 
S

Sven

Well-Known Member
Marky-Marc said:
ecu will reset... because it 'thinks' you turned the key off, ergo, low voltage on battery.....
Click to expand...
ECU cannot reset if 12v is needed at the chip inside the black box. The resistors inside the chips drop the volts out the pins to 5v. There are two 5v voltage values used to tie in two types of chips say. It gets complex. You need the 12v to have that strong 5v range. So without that value, the ecu cannot process under 12v.

Say one chip's range is not used from 0.8v to 2v is one spike. The 1.2v range is not used or where the magnetic spike is on the flip-flop. The other chip works past a 2.4v range. So with a chip @ 2.4v and the other @ 2v, it needs the 12v or 11v will send it into the 0.8 to 1.9999999v range and this is a bad signal is the arc at the bounce is not used as a signal. Too saw toothed, meaning, not a clean [on-off] square wave that the ecu understands.

////////////////// = Bad signal.
___I-------------|_______|----- = Good signal.

Signed,
Digitally Toilet Trained
 
francoblay1

francoblay1

The Spaniard
:yesnod: :yesnod: :yesnod: :yesnod: :yesnod:

@redned

:hi:The Intro shows Respect to the forum, should include a lot of info and not just a Hello, glad to be here, picking up my dog soon, just got a dog, yet should give all the forum members a good idea of who you are.

Show GREAT Respect and you will be greatly rewarded.

Got your most excellent Intro posted?

You can always go back and add info to your post.

Good to see most have posted an Intro, yet there are still a few straglers...

Start here: http://www.bigdogbiker.com/forums/introductions.2/create-thread

Thank You :cheers:

:chopper:
 
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