Question for Harley Techs Road King Wont Start
Road Master
Joined: Sep 2006
Posts: 991
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RE: Question for Harley Techs Road King Wont Start
ORIGINAL: Newhog
My brother washed his bike yesterday a 2000 Road King, now it wont start. No engine light at start-up, no light on PCIII, changed all of the relays and followed trouble chart in repair manual. We don't have the Harley test block but from what we can determine with a meter and test light everything points to a bad ECM. We took that off and yep water came out of it. We let it dry over night and still same problem. Is it most likely fried or will more time letting this thing dry out possibly bring it back to life? I know I know, elementary question for someone who is mechanically inclined...but it's a bike not a car
Maybe the electronics are more forgiving.
My brother washed his bike yesterday a 2000 Road King, now it wont start. No engine light at start-up, no light on PCIII, changed all of the relays and followed trouble chart in repair manual. We don't have the Harley test block but from what we can determine with a meter and test light everything points to a bad ECM. We took that off and yep water came out of it. We let it dry over night and still same problem. Is it most likely fried or will more time letting this thing dry out possibly bring it back to life? I know I know, elementary question for someone who is mechanically inclined...but it's a bike not a car
Maybe the electronics are more forgiving.Have you checked to ensure you have fuel going to the engine?
Also, have you tried taking the PCIII out of the electrical equastion and tried running JUST on the ECM?
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Road Captain
Joined: Feb 2006
Posts: 503
Likes: 1
From: AZ
RE: Question for Harley Techs Road King Wont Start
ORIGINAL: Jumpman
I think that there may be more potential problems if you put the 'bad' ECU on the 'good' bike.
If the ECU from the Road King is indeed bad, putting it on a different bike could mess things up by sending voltage to places it isn't supposed to go. If you are confident that all electronics feeding the ECU are good, I (just my opinion) would put the ECU from the Ultra on to verify wheter you need to start looking for a replacement.
The wiring on each ECU should be the same, and if there is any difference in programming (fuel, timing, etc.), it should not be significant enough to cause any problems....
I would let the ECU dry-out, and try it again...I would also take the PCIII out to the loop, and let the bike try it that way. Let me know how it goes, I will talk to a few buddies of mine & see if I can source an ECU - I think a friend of mine had a complete ECU/fuel injection system from a 99 Road King.
BTW - It is very refreshing to hear that someone else is attempting to troubleshoot electrical issues...This post is a nice change from the "Are You a RUB" BS.
I think that there may be more potential problems if you put the 'bad' ECU on the 'good' bike.
If the ECU from the Road King is indeed bad, putting it on a different bike could mess things up by sending voltage to places it isn't supposed to go. If you are confident that all electronics feeding the ECU are good, I (just my opinion) would put the ECU from the Ultra on to verify wheter you need to start looking for a replacement.
The wiring on each ECU should be the same, and if there is any difference in programming (fuel, timing, etc.), it should not be significant enough to cause any problems....
I would let the ECU dry-out, and try it again...I would also take the PCIII out to the loop, and let the bike try it that way. Let me know how it goes, I will talk to a few buddies of mine & see if I can source an ECU - I think a friend of mine had a complete ECU/fuel injection system from a 99 Road King.
BTW - It is very refreshing to hear that someone else is attempting to troubleshoot electrical issues...This post is a nice change from the "Are You a RUB" BS.
BTW, my brother who messed up the bike; we call him Jumper.
Letting it dry longer is also the first thing I told him. We did take the PCIII out of the loop, same thing.
We appreciate the help.
Mike
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Road Captain
Joined: Feb 2006
Posts: 503
Likes: 1
From: AZ
RE: Question for Harley Techs Road King Wont Start
[/quote]
Since the PCIII gets its power from the fuel pump circuit, and you are not getting lights on it, and the bike cranks but no start.
Have you checked to ensure you have fuel going to the engine?
Also, have you tried taking the PCIII out of the electrical equastion and tried running JUST on the ECM?
[/quote]
Thanks SC,
Yes we took the PCIII out of the circuit, same thing. We have thought about fuel and have not checked for no delivery. But with no lights and following the HD service manual it is almost surely the ECM given no lights past thatpoint. The LED at thepanel gets it's power from the ECM according to the book. Might as well check that though [:-]
When we took the ECM off the bike and turned it upside down...lots of water came out...not a good sign.
Cruiser
Joined: Feb 2007
Posts: 155
Likes: 0
From:
RE: Question for Harley Techs Road King Wont Start
ORIGINAL: Newhog
My brother washed his bike yesterday a 2000 Road King, now it wont start. No engine light at start-up, no light on PCIII, changed all of the relays and followed trouble chart in repair manual. We don't have the Harley test block but from what we can determine with a meter and test light everything points to a bad ECM. We took that off and yep water came out of it. We let it dry over night and still same problem. Is it most likely fried or will more time letting this thing dry out possibly bring it back to life? I know I know, elementary question for someone who is mechanically inclined...but it's a bike not a carMaybe the electronics are more forgiving.
Is this anOEM replacement only or does anyoneknow of aused source? One last thing, the bike is modified and as saidhas a PCIII on it, will replacing the ECM require reprogramming and dyno? I know the software is in the PCIII but since every bike is different will anew ECM change the performance it was married to before?
One last question;my bike...is a 99 Ultra...if we swap ECM's to verify his being bad can I damage mine or cause more damage to his since thebikes are not an exact match?
Thanks, Mike
My brother washed his bike yesterday a 2000 Road King, now it wont start. No engine light at start-up, no light on PCIII, changed all of the relays and followed trouble chart in repair manual. We don't have the Harley test block but from what we can determine with a meter and test light everything points to a bad ECM. We took that off and yep water came out of it. We let it dry over night and still same problem. Is it most likely fried or will more time letting this thing dry out possibly bring it back to life? I know I know, elementary question for someone who is mechanically inclined...but it's a bike not a car
Maybe the electronics are more forgiving.Is this anOEM replacement only or does anyoneknow of aused source? One last thing, the bike is modified and as saidhas a PCIII on it, will replacing the ECM require reprogramming and dyno? I know the software is in the PCIII but since every bike is different will anew ECM change the performance it was married to before?
One last question;my bike...is a 99 Ultra...if we swap ECM's to verify his being bad can I damage mine or cause more damage to his since thebikes are not an exact match?
Thanks, Mike
Elite HDF Member
Joined: Jul 2006
Posts: 4,813
Likes: 6
From: Rio Grande Valley-Texas
RE: Question for Harley Techs Road King Wont Start
ORIGINAL: Jumpman
This post is a nice change from the "Are You a RUB" BS.
This post is a nice change from the "Are You a RUB" BS.
Elite HDF Member
Joined: Feb 2006
Posts: 3,515
Likes: 6
From:
RE: Question for Harley Techs Road King Wont Start
How in the heck do you fill the ecm with water washing a bike? Id say if he flooded that much water on it, he may have filled the intake, bikes wont run on water. check your plugs for fire, and some of these guys are giving you advise based on efi systems on newer models, 2001 and back was a different efi system than todays models there are differences.
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Road Master
Joined: Nov 2006
Posts: 1,227
Likes: 3
From: Central Illinois
RE: Question for Harley Techs Road King Wont Start
I doknow from experience that I have poured water out of a 1998ECM and let it dry. Ran fine for years after. It gets water where the plug for the PC goes into the ECM. Notice the rubber boot on the factory plug and no boot on the PC plug. Take an old intertube, slice it in half and lay over ECM plug before tightening the ECM down. this will prevent anymore water from getting in. Dry ECM with hairdryer. Might be fried but I got lucky.
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Road Captain
Joined: Feb 2006
Posts: 503
Likes: 1
From: AZ
RE: Question for Harley Techs Road King Wont Start
Thanks everyone,
It is definitely a bad ECM, I changed it out with the one from my bike and if fired right upâŚengine light worked as it should as well as all other indicators. We pulled apart the old ECM, cleaned it, sprayed it with electronic cleaner (nothing to loose), tried drying it with a hair dryer, which did not work. So only time well tell.
Anyway we are in the market for an ECM if anyone has one to sell?
The part HD P/N: 32423-99 or 32423-99B
Thanks Again, Mike
It is definitely a bad ECM, I changed it out with the one from my bike and if fired right upâŚengine light worked as it should as well as all other indicators. We pulled apart the old ECM, cleaned it, sprayed it with electronic cleaner (nothing to loose), tried drying it with a hair dryer, which did not work. So only time well tell.
Anyway we are in the market for an ECM if anyone has one to sell?
The part HD P/N: 32423-99 or 32423-99B
Thanks Again, Mike