i just finished building an 01 road glide from the frame up.i bought it wrecked and had to replace the frame.it runs very good and handles even better.my problem is after it goes off cold idle,it drops to 6-700 rpm.no codes.does it have a sensor that controls warm idle?

 

Was it the ECM that came with the bike? Your idle speed can be set/changed with a tuner/map. Curious where you sourced your ECM from?

 

Is that the old Marinelli, think that's the name, fuel injection system? You may have to search the fuel injection site on HD Forums.

 

2001 should have the m&m injection , you can adj. the cold and warm (hot ) idle ,, and final idle with the screws ,, think it was a #7 torx if i remember when i did the nieghbors 2001 ultra,, google it for the adj. location and instructions that is where i found it

 

My buddy has an '01 Road King and had to replace his ECM a few years ago with a used one. His idle dropped to about 700 RPM and has had no issues. Sounds awesome too.

 

It has older MM injection. They are prone to idle/starting problems mostly from junk in the ports and air leaks. My '00 RK has it and idles lower then my '09 EG. Why is 600-700 idle a problem?

 

it has its original ecm.maybe i am wrong,but i thought all fuel injected motors needed 900 rpm to function properly.and i think if it was an air leak,it would idle too high.

 

i found a couple of videos on idle adjustment.turns out you can adjust the cold as well as warm idle.i will undertake that as soon as the weather warms up a little here in the dirty south.

 

Check the air bleeds inside the throttlebody ( 10 and 2 position) to make sure they are clean. that caused me all kinds of problems. I used carb cleaner and shot it in the bleeds while turning ignition on and then off, let it cycle closed then turn on again until both run clear. I also stuff a rag against the throttle plate, as mine did not want to run very well the first time I did it. I did that about once every 3 or 4 months and never had another problem.

 

When the engine idles too slowly the crankshaft speed fluctuates. It slows down as each piston reaches compression, then accelerates, etc. This creates alternating loads in the crankshaft bearings which can be damaging. Idle speed is around 1,000rpm for Evos and twincams, at which speeds the crankshaft rotates at a relatively uniform speed and avoids risk of damaging the bearings (big-ends in particular - darned expensive things!).