Ignition/Tuner/ECM/Fuel Injection Need advice on ignition issues? Questions about a tuner? Have questions about a EFI calibration or Fuel Injection? Tips on Engine Diagnostics, how to get codes, and what they mean. Find your answers here.

Intermittent Engine Stall, Shutdown, Cutoff

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Old May 10, 2020 | 06:43 PM
  #51  
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Max Headflow
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From: poway
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Originally Posted by 08heritagecp
Replaced the engine temp sensor yesterday but still had the issue. Today I disconnected the battery and while doing so I noticed the terminal connections were not very tight. Reconnected the battery properly and rode all day today without an issue. The bike even seemed to be running better than ever. I did notice some differences in the idle at different times but it did not seem like it wanted to stall. Maybe resetting the computer did the trick? We shall see.
Check every oil change. (assuming you change oil at regular intervals. )
 
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Old May 10, 2020 | 07:19 PM
  #52  
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From: CA
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I'm going to try charging the battery, thanks. I did notice that the fuel pump wasn't giving the same priming sound the way it usually does when i switch on the ignition.
This brings me to another question that is probably self evident, but it sounds like if I'm not riding it everyday, it will need a trickle charger, correct? Its not like a car where the battery gets fully charged by a large amp alternator after only an hour. It sounds like on these bikes they need to run a lot longer to keep the battery fully re-charged, and if I'm running a high output headlight in the day, it may suck more charge than is going into it. Am I correct?
 
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Old May 10, 2020 | 07:26 PM
  #53  
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From: poway
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If you are only using the bike to pick up a six-pack at the local liqueur store, you might want to add a maintenance charger. If when you get on the bike, you ride it for 30 miles or more, and ride weekly, you'll be OK unless you live in a real cold climate. Don't know if CA means Canada or California.
 

Last edited by Max Headflow; May 10, 2020 at 07:59 PM. Reason: only
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Old May 10, 2020 | 07:47 PM
  #54  
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jpowell490
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From: Johnson City, TN
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Originally Posted by Huesero
I'm going to try charging the battery, thanks. I did notice that the fuel pump wasn't giving the same priming sound the way it usually does when i switch on the ignition.
This brings me to another question that is probably self evident, but it sounds like if I'm not riding it everyday, it will need a trickle charger, correct? Its not like a car where the battery gets fully charged by a large amp alternator after only an hour. It sounds like on these bikes they need to run a lot longer to keep the battery fully re-charged, and if I'm running a high output headlight in the day, it may suck more charge than is going into it. Am I correct?
Yes a battery tender is a must for most all bikes. I've owned Harleys that would sit for months with no problem, then others that needed a tender or they would die in two days. Let us know how it works out.
 
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Old May 13, 2020 | 01:16 AM
  #55  
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Well I put the battery charger, then reinstalled it and still no start. Took the battery to auto zone and it tested normal with 100% charge. So check off battery. Wishful thinking.

I think its the EFI it doesn't make the priming sound that it used to when I flip the run switch. Its sounds like an anemic air freshener spray device.

I guess I'll have to take it in since I know nothing about cycle EFI's
 
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Old May 13, 2020 | 06:31 AM
  #56  
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08heritagecp
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From: South East P.A.
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Sounds like your fuel pump is dead. You may want to consider replacing all of the fuel delivery components.
 
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Old Jul 31, 2020 | 04:52 PM
  #57  
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Huesero
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From: CA
Default blown fuse

This in follow-up to the previous thread, last posted 5/12/20, I wanted to post the findings and "cure".
I took my bike into Harley - OC. They were busy, so it was there a couple weeks for what turned out to be a minor issue.
The "PA" or "Parts and Accessories" fuse was blown. I wish someone here would have suggested that as a possibility in retrospect.
As it cost me $150 to replace a fuse including the obligatory diagnostic fee of $140 + $10 fuse.

This was labeled as the cause for the fuel pump/fuel injection to fail.
Harley ultimately blamed it on the fuel injection module that had been on the bike long before I had acquired it.
This was a Dynojet Commander V Fuel Injection Module.
Interestingly, the module disappeared after harley removed it, and they claimed it was "bad'.
No attempt to prove it, no testing, no communication with Dynojet, they just trashed it.... or?
According to Dynojet(R), they sell this for about $350 and it has a 4.2 star consumer review on their website.
I dont know if it would have been warranted or repairable, because it vanished.

My question to the forum: Has anyone else had problems with this Dynojet Commander V Fuel Injection Module?
And Is it true, that once installed, it is software linked to the bike, and can never be re-used on another bike?
How much does this unit really do for performance other than a simple tuner?
 
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Old Jul 31, 2020 | 07:13 PM
  #58  
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jpowell490
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From: Johnson City, TN
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Originally Posted by Huesero
This in follow-up to the previous thread, last posted 5/12/20, I wanted to post the findings and "cure".
I took my bike into Harley - OC. They were busy, so it was there a couple weeks for what turned out to be a minor issue.
The "PA" or "Parts and Accessories" fuse was blown. I wish someone here would have suggested that as a possibility in retrospect.
As it cost me $150 to replace a fuse including the obligatory diagnostic fee of $140 + $10 fuse.

This was labeled as the cause for the fuel pump/fuel injection to fail.
Harley ultimately blamed it on the fuel injection module that had been on the bike long before I had acquired it.
This was a Dynojet Commander V Fuel Injection Module.
Interestingly, the module disappeared after harley removed it, and they claimed it was "bad'.
No attempt to prove it, no testing, no communication with Dynojet, they just trashed it.... or?
According to Dynojet(R), they sell this for about $350 and it has a 4.2 star consumer review on their website.
I dont know if it would have been warranted or repairable, because it vanished.

My question to the forum: Has anyone else had problems with this Dynojet Commander V Fuel Injection Module?
And Is it true, that once installed, it is software linked to the bike, and can never be re-used on another bike?
How much does this unit really do for performance other than a simple tuner?
A PC5 is a piggy back module that is excellent. It is NOT software linked to the bike and can be used on others provided they are compatible. The only one that is software locked is the Dynojet Power Vision. The power vision does not connect to the bike permanently, it programs the ECU.

Do PC5's go bad? Sure, but rarely. They are very nice and the best one that Dynojet has built in my opinion. If they threw mine away, they would be replacing it or giving me a 350.00 credit. They can't prove it was bad, only way to do that is send it to Dynojet.

They saw it, assumed it was a problem and chucked it in the trash without telling you. That's very bad business and now they owe you.
 
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Old Oct 14, 2021 | 08:02 AM
  #59  
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TommyTwobags22
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From: Murrieta
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Hopefully someone with answers is still checking this thread. Im having same issue on my 2004 FXDXI. Bike rode great without any signs of an issue one day and parked it monday and hopped on it tuesday night to run errands and first heard some back fire, started sputtering, dies on me...right away hit the start button and boom starts right up, go about less than a qtr mile and boom bike dies again, but fires right back up. remind you no lights dimmed or anything, no check engine light comes on, and no sign of issues just turned off. turn it back on and speedo goes a little wild for a second starts to turn off and then i pull throttle and it wants to start wants to start wants to start and boom starts and goes like nothing happened for about another less than a qtr mile. i replaced the fuel filter, fuel sock, IAC, Spark plugs, wires, engine temp sensor, MAP sensor, cleaned fuel injectors, cleaned throttle body after having it apart, check valve internal fuel line, and still having the same issues. only now when the bike starts it idles like dog **** and super high then will come back down and hop on it to go and while rolling in first, it sputters and you mess with throttle and it takes off. also when it's dying you can hear the bike trying to get fuel but just dies out or if you can play with throttle it'll start back up when in limp mode. I've checked wire connections to make sure everything was good....what the hell can it be now?? anyone else having this issue? its a 2004 FXDXI stock 88 TC with cams and a Dobeck EJK which i took off and tried to install going back to stock straight to the injectors but didn't do anything, holler at your boy with the details
 
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Old Oct 14, 2021 | 08:17 AM
  #60  
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Start a new thread.
 
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