When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
hello,
I have a 98' dyna fxd, I'm having a pretty annoying issue. The issue is that the bike starts, idles and runs fine when opening the throttle, but when I cruise it around, the speedometer shuts off completely and then goes to running off one cylinder. it will stay like this for about 7-10 seconds then go back to running fine for a bit. This problem has happened the past two times I have rode. Any help would be appreciated.
both speedo and tach shut off and the ignition is stock
Try switching plug wires front to rear and see is the opposite cylinder drops out. If so, change the coil. Not common, but they can short out when heated and not blow a fuse or throw a breaker.
I'm not familiar with that late of a model Dyna and it's wiring, don't have a schematic. But I doubt it's a wiring short, otherwise it'd blow a fuse. I think the only breaker on that one is the main and everything else is fused. Could be simple as a corroded harness connector.
Otherwise, maybe some of the other guys with a wiring diagram or previous exact symptoms will happen along to help.
'98 Evo has a dual fire ignition FWIW. I agree that if the tachometer shuts off, the coil might be suspect.
(Isn't the speedometer cable driven still on the '98's?)
speedometer is electronic. I tried switching plug wires at the coil and experienced the same symptom. This time since it was a little darker out, I noticed that when the intermittent issue came up again, all of my lights went really dim as well until it went back to normal.
speedometer is electronic. I tried switching plug wires at the coil and experienced the same symptom. This time since it was a little darker out, I noticed that when the intermittent issue came up again, all of my lights went really dim as well until it went back to normal.
Check your battery negative ground wires for tightness.
'98 Evo has a dual fire ignition FWIW. I agree that if the tachometer shuts off, the coil might be suspect.
(Isn't the speedometer cable driven still on the '98's?) Check your battery negative ground wires for tightness.
They went to electronic speedos in early-mid '90s, don't remember the exact year. Yes, all Evo's are dual fire as stock.
Originally Posted by L_P_43
speedometer is electronic. I tried switching plug wires at the coil and experienced the same symptom. This time since it was a little darker out, I noticed that when the intermittent issue came up again, all of my lights went really dim as well until it went back to normal.
OK. Must be a short pulling the voltage down causing a weak spark but not enough to pop a fuse. Probably on the "lights" circuit and the best place to start is in the headlight bucket, tail light and rear brake light switch. Just a start hunting thing looking for a chaffed wire... could be anywhere. Wish I could be more help. Good luck.
7 Surprising Harley-Davidson Products that Are Not Motorcycles
Slideshow: The bar-and-shield logo shows up on far more than motorcycles, some of the company's most unexpected products have nothing to do with riding.
Slideshow: From the troubled AMF years to modern misfires, these bikes earned reputations for reliability issues, questionable engineering, or disappointing performance.
Crazy Bunderbike Build Looks Amazing, But Is It Impossible to Ride?
Slideshow: The Swiss custom shop has taken a Harley Softail and stretched it into something so long and low that it looks closer to a rolling sculpture than a conventional motorcycle.
Engraved Rebellion: Inside Bundnerbike's Glam Rock II
Slideshow: A standard cruiser becomes an intricate metal canvas in the hands of a Swiss custom house known for pushing Harley-Davidson platforms far beyond their factory brief.
Slideshow: Harley-Davidson's challenges aren't abstract; they show up in dropping shipments, shrinking dealer traffic, and strategic decisions that aren't yet translating into growth.