Question about Harley Davidson FXDWG Dyna Wide Glide Motorcycles

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My 98 fuel injected ultra classic engine light came on. checked code 15 or 55 anyone else had this problem.

Bike runs fine just rebuilt motor but the check engine light stays on after start. fuel injection. I check the codes and it either 15 or 55 anyone else have this prob and how did you fix it. it is either the IAT sensor or microprocessor malfunction! HELP.

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  • Harley Davidson Master
  • 3,506 Answers

55 Ignition Module Failure
15 Intake Air Temperature Sensor



Posted on Nov 14, 2014

6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

goalie39
  • 469 Answers

SOURCE: ultra classic 99 changed air filter to k/n do i

changing the air cleaner is like installing a stage 1 kit, if you have not replaced the exhaust but plan to, do it before you have the ECM redone.

Posted on Apr 15, 2009

roadrunning1
  • 152 Answers

SOURCE: 2002 Harley Ultra Classic backfires

Sounds like the previous owner didn't get the cpu remapped, Take it to a Harley dealer and have him check the exhaust mapping on the cpu, Shouldn't cost much or if you want get them to fully service it so that way you will know were your at with it and will have a reference point to start with or service and maintenance reasons (and re-sale value) Hope this helps

Posted on May 18, 2009

stephensaon_
  • 284 Answers

SOURCE: delphi or magnetti marelli fuel injection

If you look at the top of the Induction module, you'll see if it is either black ( single looking tube ) or Silver ( Looks like 2 tubes together ) Single tube is Delphi, Silver Dual tube is Magnetti .

Posted on Jun 12, 2009

  • 69 Answers

SOURCE: How do I change the front and rear brakes on a

Not too hard - Undo the two bolts on the caliper and then seperate the caliper and pull the old ones out. Insert the new ones and put the bolts back in to hold the caliper back together and then install them back on the bike with the two retaining bolts. Use a bit of lock tight (Blue) on the threads. Warning do not let anyone apply pressure on the brakes while you have them off the bike or you will have a mess and/or a problem.

Posted on Jun 21, 2009

  • 31 Answers

SOURCE: check engine light on 02 ultra classic

with out a code reader you really cant.

Posted on Sep 13, 2009

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1 Answer

My 98 ultra classic is not getting any spark/fire from my coil to my motor. I changed my coil, I tried changing my relays and still nothing. My bike is a '98 Harley Electra Glide Ultra Classic with...


Hi Anonymous, the CKP sensor needs compression to send correct signal to the ICM/ECM, make sure both spark plugs are in heads and use a grounded third plug to check for spark or hold spark plug cable close to spark plug in head. If still not getting spark the usual suspects are:
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I have 1998 FLHTPI when i slow down at to stop engine light comes on and bike shuts off cold idle is fine when this happens rpms drop below 1000


It sounds as if the idle system is blocked or restricted. If the fueling is injection then you need to get the bike on a diagnostic machine and check the fuel map and the fueling sensors. If it is Carbs- then you need to clean the carbs, the idle jets are very small and block easily over time. I hope this helps. Or you could just keep the revs up along with the front wheel, and save rubber(he he)

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Starving for gas


According to what you posted your problem under, you bike is fuel injected. If so, you have a fuel pump in the fuel tank of your bike. If it's not running, the bike won't run at all. If it's pressure is low, this will cause the fuel starvation problem you have mentioned. But it could be something else. Since I don't know much about Harley's fuel injection system, I'd advise taking it to a qualified mechanic.

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Steve

Feb 27, 2011 | 2000 Harley Davidson FLHTCUI Electra Glide...

1 Answer

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I always advise against "parts swapping" to find the problem with any computer controlled vehicle. This can get expensive and you can swap a lot of things out and still not find the problem. It may not be a problem with a part, it could simply be a setting that needs to be made.

I have to admit that I don't know a lot about the fuel control on the injection system on the Harley's of today. I very rarely say anything about them because I don't know that much about them. I've seen the guys at the shop run them up on the dynos and change stuff to make the fuel air mixture more conducive for a more drivable machine. But, I'm more of an "old school biker" with most of my experience on Panheads, Shovelheads, and carbureted Evolution engines. I know some mechanical stuff on the Twin Cams but not that much. I still advise taking your bike to a shop that can diagnose the fuel map on your bike.

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May 24, 2010 | 2000 Harley Davidson FLHTCUI Electra Glide...

1 Answer

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Jun 26, 2009 | 2000 Harley Davidson FLHTCUI Electra Glide...

1 Answer

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Hi Bbbabe66, for more information about your question please visit the websites below. Good luck and have nice day.
Harley Davidson Magneti Marelli Fuel Injection Settings
https://www.youtube.com/watch?v=X1a9kBx_Lb4

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