99 v92c random stalling. help!! - Victory Forums - Victory Motorcycle Forum
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post #1 of 25 (permalink) Old 03-14-2014, 08:18 PM Thread Starter
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Default 99 v92c random stalling. help!!

Alright fellas I'm really needing some help here. I've replaced the tps, relearned it. Replaced all the relays, cleaned throttle body, new plugs, oil, air and oil filter, just this winter.
Anyways, since I've had the bike it has randomly stalled on me and I've never been abled figure out a consistent cause of stalling, such as a certain gear or rpm
While riding it will stutter once then is fine. When it stalls it acts like it runs out of gas all the sudden, no stuttering just drops rpms to nothing and then when I stop and cycle the key and killswitch and it starts right up and idles like nothing happened...I'm stumped. Any of you smart fellers have any idea what this might be from??
Thanks guys!
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post #2 of 25 (permalink) Old 03-14-2014, 09:45 PM
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I had a similar problem, I found that the rubber boot under the throttle body was rotted and cracked, causing a bad vacuum leak. Your problem may not be a vacuum leak, but it's worth checking out. Also, check the rubber vacuum caps on the nipples on the right side of the throttle body. Mine stalled at idle and low rpm because of the vacuum leak. If yours is stalling at higher rpm, it's probably something else causing it

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post #3 of 25 (permalink) Old 03-15-2014, 07:01 AM
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Quote:
Originally Posted by fenderheavy View Post
Alright fellas I'm really needing some help here. I've replaced the tps, relearned it. Replaced all the relays, cleaned throttle body, new plugs, oil, air and oil filter, just this winter.
Anyways, since I've had the bike it has randomly stalled on me and I've never been abled figure out a consistent cause of stalling, such as a certain gear or rpm
While riding it will stutter once then is fine. When it stalls it acts like it runs out of gas all the sudden, no stuttering just drops rpms to nothing and then when I stop and cycle the key and killswitch and it starts right up and idles like nothing happened...I'm stumped. Any of you smart fellers have any idea what this might be from??
Thanks guys!
Have you checked fuel pressure? Hate to say it but could be the fuel pump on the way out. Checked coonections on battery I asummed, no worn cable and tight? Star washers installed? Checked connection to pump under tank? Just thoughts on what's not mentioned here.

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post #4 of 25 (permalink) Old 03-15-2014, 12:11 PM
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I don't think there is a way to check your fuel pressure.
Call Rylan at The Vic Shop and see what he can tell you after you check for vacuum leaks.

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post #5 of 25 (permalink) Old 03-15-2014, 05:26 PM
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My 99's had it's share of issues over the years.I would say first off-make sure your tank vent line is not pinched or melted shut-this happens on 99s and will cause similar symptoms & in some extreme cases the tanks buckled in. 2nd would be to check your fuel tank's pre-filters-they're inside the tank spigots where the fuel lines connect on each side of the tank-easily overlooked and can get clogged. Third would be the fuel pump & inline fuel filter-there were recalls on these with some of the early bikes. You can check you fuel pressure using the schrader valve in the fuel rail under the right side gas tank- looks like a tire valve stem. Most auto parts will loan you a gauge-hook it & start the bike-you should have 49 PSI. Try these & check back in
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post #6 of 25 (permalink) Old 03-15-2014, 08:05 PM Thread Starter
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Thanks for the quick response guys! I'll try to further explain my situation.
As far as I can tell, my tb adapter looks quite new (I bought the bike not yet a year ago). I have yet to try the starter fluid and throttle body spray trick yet.
I've narrowed it down to the stalling only happening when decelerating or coming down from high rpms.
It acts like there's no fuel but very suddenly. And it wants to keeping turning over if I feather the throttle it sputters but usually just dies completely.
My tank vent is nasty but I'm pretty sure its working properly.
I havent checked the prefilters, does a decelerating stalling issue sound like a dirty filter or more of an electrical issue?
Thanks for the help brothers.
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post #7 of 25 (permalink) Old 03-20-2014, 06:46 PM Thread Starter
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Ok so I'm pretty sure I've ruled out a bad pump. I just checked it and it was running about 50psi. I sprayed starter fluid around the (what looks like a pretty recently installed throttle body) nothing out of the ordinary occured. I'll have to check the prefilters this weekend when I can drain the tank probably.
I read somewhere that these bikes oil cooler does too good of a job basically and tends to make the bike run too cold. Ive noticed if I let the bike warm up for quite a while before riding it rides perfect. But if I get to where I'm going, let it sit for maybe 30 minutes then start up and take off, it runs like crap, back firing and sputtering and stalling ...is this a cooler problem? Also, it mostly happens at night, or later in the day...when it's cooler out.
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post #8 of 25 (permalink) Old 03-20-2014, 07:03 PM
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Maybe a bad oil temp sensor?
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post #9 of 25 (permalink) Old 03-20-2014, 07:09 PM Thread Starter
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Ok that could make sense. Any idea on how I'd test that?
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post #10 of 25 (permalink) Old 03-21-2014, 06:52 AM
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Yes, under the right side cover is the ECM connection- you need to set your multi-meter to ohms and check the resistance between pins #22 & #5 -it should read 13.78 K Ohms.
Trying to show the ECM map-here's the best I can do at this time-here's a better copy

Last edited by ByteN2it; 03-21-2014 at 07:12 PM.
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