It helps to have a service manual, which I am guessing you do not have. There are a whole set of diagnostics for the EFI system.

Code 25 is the ignition coil. There is a test for it, but it involves a special test light. The other option is to find someone that has a similar bike, and try swapping them out.

The resistance test for the ETS is with the ECM disconnected. Resistance is measured between pin 13 (the Pk/Y wire) and ground. Inspect the connector to the ETS to make sure that it is not damaged. You should also do a wiggle test in the connector wires to see if there is a break in the wire.

When you turned the bike off does the IAC move out, then back in?

 

The IAC does this:
Turn on the ignition, makes that sound they make, it is already towards the air cleaner away from the bike when I turn on ignition.
Turn off the ignition, the piston goes in towards the engine then back out towards the air cleaner.

Now it is starting to sound a little crackly, I am not sure, I just cleaned & lubed it. It could be the rocks in my head though wanting to figure this out...

I am for sure going to look on E-Bay & at swap meets for a service manual.
She has 73,000 on her and looks amazing. I am going to keep her for a few years ... I have 2 more years of payments....

Yep, I get code 25. Maybe I have 2 issues with this ....

 

You are right on the IAC it should go in then out. I typed it backwards.

Do yourself a favor. Order the manual from your local HD store. It's 50-60 bucks and you're done.

 

Well,
I guess I kinda' have my ***** in a vice since the wife & I need to ride so maybe $100 for the dealer to diagnosis, if they fix it they put $75 of the test towards repair at $70 an hr. They say they have a guy that knows EVO EFI's & that is the only reason they keep him around so I guess save for 3 weeks then take her to the dealer & have it done right instead of throwing $ at parts that I really have no idea on how to repair.

I can do my own LOF & Air Cleaner & brake pads, that is about it.

I feel like an a-hole & I should have know better to buy a manual for this bike. I could have atleast figured out what is wrong with my bike.

The best advice ever given her to me has been buy the shop manual & I know better and should have had one.

Thanks for the help on all this. In a few weeks I will post what the dealer said.

 

Head temperature sensor failing will cause a high idle. ECM will add more fuel.

M1057 Service bulletin
ELECTRONIC FUEL INJECTION
Intermittent High Idle

Harley-Davidson has received reports from dealers that
electronic fuel injection equipped motorcycles were experiencing
intermittent high idle speeds, usually after a hot
restart. Inspection of returned parts has shown that the idle
speed control (ISC) pintle guide ID was undersized, causing
excessive friction between the O-ring on the pintle and
the pintle guide ID. With high ambient temperatures, the
friction became sufficient enough to cause a binding condition
in the ISC, which held the throttle in a high idle position.
Further investigation has revealed this condition could
occur on an unknown number of 1996 vehicles shipped
from York between March and July. The ISC should be replaced
only on those motorcycles that experience the high idle speed problem.
There could be other causes of high idle speed such as
improper throttle/cruise cable adjustment or engine temperature circuit problems.
If you encounter a fuel injected motorcycle with this condition,
connect the Scanalyzer and, with the engine temperature
greater than 284 degrees F., check the Data Monitor menu items for abnormal readings.
Several of the key menu readings should be approximately:
RPM – 1000 RPM
ISC – 0 Steps
ET – > 284 Deg.
TP – 3.2 Deg.
TP – 0.4 v
Inv PW – 3.9 ms
Advance – 15 Deg.
IDLE/WOT – Yes
If the high idle condition occurs after a hot restart, and the
ISC pintle appears to be extended, fax your Scanalyzer
readings, along with a request for a replacement ISC, to
Technical Service at (414) 343-8334. A replacement ISC,
fasteners and lock plate will be sent to your dealership at no charge.
Required Dealer Action
ISC REPLACEMENT PROCEDURE
1. Remove seat, air cleaner assembly and two rear fuel tank mounting bolts.
2. Loosen front fuel tank mount, then raise and support rear of tank.
3. Standing on the left side of the motorcycle, remove the
two 8 mm ISC fasteners using a 1/4 drive, 12” extension with a swivel and another 4” extension.
4. Continue repair using the appropriate steps on pages
5. Reassemble the motorcycle.

WARNING
After installing seat, pull upward on front of seat to be sure it is locked in position. If seat is loose, it could
shift position during vehicle operation and startle the rider, causing loss of control and personal injury.
WARRANTY PROCEDURE
Use labor code 7490 for idle speed diagnosis and request an additional reimbursement of 0.5 hours for this ISC replacement. File a warranty claim in the normal manner.

 

Thank you for posting that. Maybe I will see what one cost and replace it...then buy a shop manual.
I will ponder as I save....


Thank you for posting this info.

 

I got the new fuel lines installed and was able to ride, the temperature sensor replacement fixed the problem I was having. I think I rode close to 50 miles around and about Saturday and no problems. The cost was right at $100 with tax for me here in NC. Mine is a '96 RK so check around, yours might be less.

 

I am so F-D' & I am going to have to play the throw money at parts and hope that is whats wrong game.

So I get to the dealer here in Peoria,AZ & they go to write my service order up & say oh' you have a 98' I thought you said 99', we don't touch old Evo's.

F' you you preppy pencil neck queer. I called this place 3 times & I finally get a ride to take me back home to drop it off telling the bastards I had a 98' EVO. Oh yeah yeah they say, we have a mechanic that works on EVO's & the old FI systems, that is why we keep him around." LOL yeah' we hook you up.

Man, this sucks

ISC first then I see...

 

Thanks man. I am going to get one now....

 

Good deal. Let us know how that works out. I 've only done close to 150 miles, maybe more, but the bike is running well. I need to adjust the warm idle down a bit, sounds like it is idling a little high now when it is warm.