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Discussion Starter #1 (Edited)
So this sounds like a somewhat familiar issue, though mine is an extreme case. I purchased this 2006 vulcan nomad 1600 with 26,000 mi, fully stock. It ran fine when it was cooler out, though no rides further than 40-50 mi. Once the weather heated up I went on a nice slow 10 mi cruise, running about 20 mph through some parks, fan turned on. Went onto a 2 lane rd and got up to 60mph and cruised approx 5 minutes in 4th gear. When I twisted back on the throttle to accelerate to 70 I thought the bike ran out of gas, it had nothing but a sputter, but didn't die. It did this any time I got the rpms up and had to limp back home doing 55 in 5th gear, couldn't t crank it past that. Did the resistor mod, same issues. Checked and cleaned throttle body, same issues. (They were clean FYI) removed resistor mod and installed a cobra powrpro, same issues. Removed powrpro and now I have an FI light on constantly, it had never illuminated before, but bike still runs identical. If I hop on the bike, it rips just fine until it really warms in traffic or just sitting. Before going to the dealer (they can't get me in for 2 weeks) I thought I'd ask ya'll. I am still getting power at the temperature control sensor plug, and I made sure vent hoses were good, even put my mouth on them and blew to make sure they were free and clear. I'm at a loss boys and girls.
 

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Fuel pump? Sounds like it's starved for fuel. I bought my '06 Nomad a few months ago. Owner said he had similar problem that stranded him. He had to have fuel pump replaced.
 

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You will have to retrieve FI error code before doing anything.
Also, one persons experience may not be yours.
 

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Discussion Starter #7
This is not something Autozone can do.

If you want, we can post the procedure.
Please do post, I had gadgets page up, unfortunately I don't see a box with 3 plugs. Just a junction box with two plugs under the right side cover and a huge box with one big plug to the left of the battery under the seat.
 

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Gadgets procedure is for both 1500's and 1600's
1500's have three ECU plugs, 1600's have only one.
Yours should have a loose yellow wire that you ground. Find the yellow on the ECU connector and follow it back to an open end.
When retrieving codes, be sure and follow exceptions for 1600 as noted.

Be sure and ask any questions.
 

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Discussion Starter #11
So somehow the electrical connector had come apart inside the heat shrink and was not connected. (Air temp sensor) got that fixed, and re-installed the cobra powrpro. Let it sit and run til the fan kicked in, then took for a ride through some subdivisions, then a 60 minute ride between speeds of 60-70mph. No problems, but it was only 70 degrees, and had rained most of the day so the roads were pretty cool as well. It's supposed to be mid 80's tomorrow so I will put it to work in the heat and report back.
 

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Discussion Starter #13
Yes, the resistor is gone, I crimped a wire connector on each end and connected them when I clipped off the resistor when initially installing the processor. We will see this afternoon what the verdict truly is.
 

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Discussion Starter #14
Well......took it for a long ride. It was about 84 degrees and I rode for nearly 45 minutes before I had to go through some construction and it was stop and for for 5 minutes or so. When I got going about 59-60 mph again it bogged if you tried to twist the throttle. Another curious item is that when I let it sit and warm up, it sounds like it may need a throttle position sensor. It idles up and down slightly and adjusting the idle twist screw can never quite get it right as it tends to idle to far up and down. On a positive note, no FI light ever comes on, even when the bike acts up, so I think that problem is solved. As for the main issue, I'm still lost and frustrated.
 

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Discussion Starter #16
Sorry for the delay, processor off, similar story, except for it didn't take quite as long for the issues to arise again. Maybe 20 minutes or so.
 

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Discussion Starter #20
Idle still varies with processor dis-connected?
Is the idle speed adjusted to Kawasaki specifications?
Well I don't have a tach, but it idles at at what I believe sounds to be about 750. Certainly higher than a Harley sounds....but yes it still fluctuates up and when as it sits. Maybe I should post a video.
 
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