engine stalling real bad : V-Twin Forum: Harley Davidson Forums

uwiik · 10-15-2009, 10:18 AM

I have a 2000 ultra classic with SE breather kit, stage II upgrade, MM EFI, PCII, and rinehart slip on. The bike idle fine with good power, it can idle forever with nice steady sound but it keep on stalling on slow speed, most of the time when making a turn, when it stall the entire electrical went dead for half a second then turn back on. I have tried cleaning all the sensor, change the crank position sensor, check for fuel line crack, re flash the pcII to no result. I am super frustrated right now, feels like burning down the entire bike

. can anyone shed some light to this problem. Thanks a million.

bill corkey · 10-15-2009, 12:20 PM

Send to me before u burn it.

Seriously it sounds like main electrical power is intermittent. Maybe a dirty or corroded battery cable connector. Check at the battery as well as at the starter and ground connector,check the main circuit breaker and associated wiring. Check your bank angle sensor also since it happens when turning.

Do u have a shop manual? it would help if u can read schematics.

LoneEagle964 · 10-15-2009, 03:05 PM

check the Bank Angle Sensor it is designed to shut the bike off in case of a drop but when they start going bad can do as you say yours is doing .

LoneEagle

claydbal · 10-15-2009, 04:09 PM

system relay is $15 and sounds like you are due. also, the IAC on marelli stuff is known to not work right/needs cleaning. try that before you dent your forehead.

does it run well at cruise?

uwiik · 10-15-2009, 08:35 PM

Burning the bike down will at least give me some satisfaction...

Oh I miss my old evo, all the simplicity and reliability. I wonder what make the moco ditch evo, its a prefect engine compared to shitty TC with its billions of trouble.....
The bike shuts down mostly when making a turn, but after a while it start shutting down on straight too. The engine got really hot too.
I will try checking all cable, relay and bank sensor today. Will keep you guys updated.. Thanks for the input guys, much appreciated.

uwiik · 10-15-2009, 10:14 PM

OK the bike is sitting in an indy workshop right now. The guy have a perfectly tuned 2000 road king lying around, he tried swapping bank angle sensor, crank position sensor, relay, check batt positive, check bat negative, ignition, check fuel tank, check fuel line fuel press, even swapping the entire ECM to no result... We havent tried swapping the entire injection system, soon we might swap the entire bike altogether.. LOL....
My last resort would be swapping the entire injection system with a new carburetor kit, and that would cost me a fortune in this part of the world (approx US$3500). To give you an idea a used 2000 FLTHCUI cost US$22k-24k here, a brand new one will set you back US$44K, all the irrational government import taxes (they put tax on top of 200% import duty, 21%-57% luxury goods tax and tax shipping cost too, and on top of that they tax 10% of the entire value and 2-5% yearly road tax of the whole value of the bike when new) and crazy stealer markup
I wonder why nobody sued moco for all the crappy mistake they made. I heard rumor that someone got sent to the hospital because a failed throttle by wire went berserk (its a rumor I heard dont sue me for this ) Go to the J** vtwin forum and you dont see this BS... I've put up with this just because of the.... well you know, its a harley full stop.

ironheadbuck · 10-15-2009, 10:47 PM

isnt there a fuel line in the tank that comes loose or something ? i have a carb -just trying to help -can you put a fuel pressure gauge on it ?

uwiik · 10-15-2009, 11:23 PM

yes tank was dismantled, checked for any leak, checked for fuel pressure, everything was spot on. The guy who did the job told me that this is one super weird case, and yes he confirmed that swapping to carb will solve this once and for all, even if there is anymore problem, its gonna be a super easy fix because its all mechanical work. What do you think??

LoneEagle964 · 10-16-2009, 06:00 AM

if it is an electrical problem then swapping to a carb will not fix it only cost you alot of $$
has the main circuit breaker been checked or replaced there was a recall on them but I can not remember the year it was 99 or 2000 since evverything dies I would check it and also look for any bad wires that could cause it to trip.

LoneEagle

uwiik · 10-16-2009, 09:23 AM

Here is the update...
changed main relay, main circuit breaker, then when I fired up the bike and about to roll, the engine shuts down, usually this happen during cruising and cornering. Because the engine shuts down when its still inside the workshop, we all could hear the 'click' sound of the main circuit breaker really clearly.... BTW: when the engine shuts down, the entire electrical system also shuts down (did I mention this earlier?) and it takes 10-30 seconds with ignition off to turn the whole electrical system on again....
I am guessing the is a short circuit somewhere in the elctrical system. what do you guys think??
There is another possibility too, I bought this bike pre owned, I found out today that the wire on the main voltage regulator has been cut and soldered together, obviously this bike had some kind of regulator problem, I suspected the previous owner had a regulator damage, couldnt find a regulator for 2000 TC and just buy a regulator for newer model with different socket and rewire it...it is a possibility. Could it be the cause??? Does the regulator from 2000 any different to the newer version???

bill corkey · 10-16-2009, 09:44 AM

Quote:

Originally Posted by uwiik

Here is the update...
changed main relay, main circuit breaker, then when I fired up the bike and about to roll, the engine shuts down, usually this happen during cruising and cornering. Because the engine shuts down when its still inside the workshop, we all could hear the 'click' sound of the main circuit breaker really clearly.... BTW: when the engine shuts down, the entire electrical system also shuts down (did I mention this earlier?) and it takes 10-30 seconds with ignition off to turn the whole electrical system on again....
I am guessing the is a short circuit somewhere in the elctrical system. what do you guys think??
There is another possibility too, I bought this bike pre owned, I found out today that the wire on the main voltage regulator has been cut and soldered together, obviously this bike had some kind of regulator problem, I suspected the previous owner had a regulator damage, couldnt find a regulator for 2000 TC and just buy a regulator for newer model with different socket and rewire it...it is a possibility. Could it be the cause??? Does the regulator from 2000 any different to the newer version???

you might get it. after u swap every part on the bike, i prefer a systematic approach. You need a multimeter and a service manual.

uwiik · 10-16-2009, 10:29 AM

i am leaning towards regulator problem now. how do you detect regulator problem and also detecting the cause? i heard something about measuring ohm and AC (not DC) voltage from stator???

uwiik · 10-16-2009, 10:31 AM

i have ordered haynes service manual, couldnt find official HD one anywhere, not even amazon.com

uwiik · 10-16-2009, 10:58 AM

OK, regulator problem is out the window. The mech have checked on first try and found no problem at all. gonna dissasemble the whole bike and re route re check every single wire that might be short or loose.

uwiik · 10-16-2009, 11:02 AM

So now back to the initial diagnostic. when the engine shut down the whole electrical system shuts down too. have to wait 20-30 secs with ignition key off before it can be turned on again. I could hear the circuit breaker click sound. What could possibly the problem??? not bank angle sensor, replaced that already.