crow

has any body had probelms with icm or control module if so how does it act i hate to spend big bucks to fix the problem and not actually fix it its a 99 superhawk with 30k on it starts but wont stay running got fuel fire and the timing is right batt is brand new and so is r/r runs on 1 cylinder then two then not at all

RWhisen

I'd look at other issues such as fuel delivery before I went after anything else.

crow

ive been down that road ive got tons of fuel the slides in the carbs get all wet make me think ive got too much untill you tap icm with screwdriver then it will run great for a second tap again and it doesnt change a thing next thing you know it dies

RWhisen

Check your wiring to control module and grounds coming off of it.

Schematic:
http://www.tweety.se/download.php?fi..._Superhawk.jpg

smokinjoe73

Pretty fishy that you get it to run well when tapping the icm? Definitely check the grounds. I screwed my icm by hitting the wire harness with a big sharp drill bit.

Only knocked out my tach & a new (used) unit got me back on track. Not cheap to have the stupid stealership diagnose but I was 550miles from home so had to cave

crow

thanks for the ideas ill check grounds and wiring i have all ready total rebuilt cards no pluged up jet or stuck floats this all started when my r/r took a crap (thread not starting )ive fixed that problem i think cant make it run long enough to check charge rate could the over chargeing problem fry my icm and is there any way to test icm itself?

smokinjoe73

Uh, like I said, you have to go to the stealership to have it diagnosed. (its not a simple affair, have you seen the plug?)

Beyond that you could plug in a working unit & see if problem is solved, BUT you risk frying the good unit of your ex-friend by doing so.

Kind of high stakes in my book, and I have 2 VTRs. Didnt want to risk need 2 units.....

You should put a voltmeter across the battery and check voltage off then running (even if brief)

crow

none of my close friends are smart enough to own a superhawk so i dont have to worrie about that ill check my wiring really good and see what happens will i get an proper voltage reading even thought it runs on one cylinder more often than not?

aja

Make sure your coils are snug against the frame or you could have a bad ground there, also check plug wires and boots.

smokinjoe73

Yes. What you are checking is battery standing voltage vs what the RR is allowing to be put into the system. You hope that the bike is charging while running so the voltage should go up. The stator is spinning at the same speed regardless of how many cylenders are spinning it so you should read some charge. (but not extreme charge)

7moore7

lol!

And it's the rpm's that influence voltage, not which cylinder is firing. As long as that stator is spinning, you're making electricity (well, ideally that's what's happening)

7moore7

Damn, Joe, you've got me beat. Do what Joe said...

crow

ok ive checked the connections for the coils nice and clean now nice and tight still wont run after just a few trys at starting it kills batt so while its charging (overnight) do you guys have any more ides things to try im pulling out my hair and i dont have much to spare (do any of you brillant superhawk lovers live near napa Ca ) my buddies love it when it doesnt run and hate it when it does

crow

also can i ditch the bike batt and use the one from my truck for diagnosing purpose or is that bad for the system

saige

i would imagine the cranking power would be way stronger than needed.can it be done,yes.
i have done it,but with like a small honda civic size battery just to check it long enough to get a good reading.
but be very cautious,dont let anything touch anything else,dont ask me how i know its bad lol

7moore7

12v from truck will work. The only thing to avoid is hooking your motorcycle up to your truck while it's on (when you're, say, jumping it).

yamahadm250

Make sure that the vaccum line is on the correct nipple on the fuel petcock.if its not it will run but not very good.

crow

well i still havent had time or the patience to get my super chicken to run i have become so frustrated with it that it has been pushed in the corner and left for dead but i wanted to say thank you to every body that gave me ideas to try any more ideas please post or pm me

aja

Check out the barf forum for help, there are a few hawk owners in the bay area who may be willing to help.

LITTLEHAWK

Your problem could be a cold or lose solder joint.
I have never opened one but if you open it and check
for lose or cold discolored joints. Then re solder them
your problem may go away.

STAFF SGT USAF Aircraft electrical environmental systerms