| Author | Message | ||
     Danoz34 |
I am getting an IAC system error code. IAC steps show 2 when bike is idling at 1250. At 2000 it comes up to about 60-80. If I keep throttle at 2k the CEL will go off. Once I let go and it returns to idle (1250RPM) the IAC steps will semi-slowly (about 5-10 seconds) drop down to 2 and sit there. The light will come back on once this occurs and the bike will usually stall. This happens at any point the bike is idling (stop light, slow traffic, etc). It has also "surged" on me when accelerating from a stop. The bike feels like it cuts out but then surges back. This has happens 3 different times when leaving a stop light, 2 times in the middle of a sharp turn. All of this started yesterday. Have installed a new battery already, wiped the throttle bodies down, and have tried spraying carb cleaner down IAC hose. Any other ideas? | ||
| Panshovevo |
All I know about it came from reading the Electrical Diagnostic manual, but according the the manual, 5 steps represents a fully closed passage. Can you hear the IAC cycling when you turn the switch on? The manual suggests disconnecting the fuel pump when listening for it, but in my limited experience, when they are operating normally, you can't miss the sound. I have a sluggish sounding one on my '09 CR at the moment... Even so, Diagnostic Mode shows anywhere from 75-160 steps with the engine off. And yes, it occasionally cranks hard. I need to do something about it. Do you have access to the Electrical Diagnostic manual? | ||
| Panshovevo |
Have you checked your throttle position sensor settings? | ||
| Danoz34 |
It moves around from what I can see. The TPS is at 2% closed 100% Wot. I already did tps reset | ||
| Panshovevo |
Have you noticed any change in the sound when you turn the switches on and off? I'm wondering how you are getting a reading of 2 steps at idle, when the manual states that 5 is fully closed. Sending a PM. | ||
| Danoz34 |
I'm just going off what diagnosis mode shows when the bike is running. I can't really hear anything over the fuel pump but it seems to work when I'm cruising above 2000 rpm because it doesn't cut out on me | ||
| Panshovevo |
I wonder if it might be worth pouring a small quantity (half an oz maybe) of Marvel Mystery oil in the IAC hose and let it sit overnight. I may try this on my CR, but not today...I'm lying in bed with a crippling muscle spasm (I guess) in my low back and hip that may be related to the time spent riding the R model the last few days. Too much in a short period of time, I guess. Getting old SUX! BTW, how many miles on your bike? (Message edited by Panshovevo on October 25, 2015) | ||
| Danoz34 |
Well I took the IAC out and cleaned it and then reset it back. It worked wonderfully for the ride and sitting in garage idling. Then as I'm coming to a stop the light came on again and it died out. I guess I'll order a new IAC as it keeps over extending for some reason :/ I've got just under 40000 miles on it | ||
| Panshovevo |
I haven't made it back to the shop this week, been mostly in bed other than Dr appointments with back problems. Haven't had a chance to try out my theory on my IAC. Made any further progress with yours? | ||
| Danoz34 |
Waiting on part to come in :/ I hope this fixes it | ||
| Zac4mac |
Both my wet-heads are at the shop and I'M ON VACATION!!! My recollections of that input while in D.M. is more like 75-160 than 2. I am going to the shop shortly tho, I'll see what the RS is doing and check the 1125, not running. Unless I forget... Z | ||
| Panshovevo |
Zac, if you see this before you go to the shop, check it in DM with the engine running, if possible. I've never checked mine that way. I would try it, but doubt I could make it to the shop on these crutches. Haven't been to the shop since the back went south on me Sunday. (Message edited by Panshovevo on October 30, 2015) | ||
| Zac4mac |
Hey I remembered!..... Both the 1190RS and Loretta, my 08 1125R showed 167 steps at key-on/motor-off. Only the RS is in running condition and it showed 240 steps, running at idle. Loretta is on an EBR race ECM and the RS has a programmable from Tim at IDS. That should not matter. HTH Z | ||
| Panshovevo |
I managed to hobble over to the shop on crutches earlier today, (first time since mid-day last Sunday) and get some battery maintainers hooked up, but forgot all about checking this. I doubt I could have gotten the back shop door open to vent the exhaust fumes anyway. It's time for some spray lube on the runners. Thanks for checking, Zac. Every little bit of info added to the knowledge pool helps. It would be cool if we could put together a database of info not available in the manual, such as this. Much of it is probably buried somewhere in the archives, but sometimes finding it is difficult. | ||
| Panshovevo |
Well, I had a couple shots of bourbon on top of my pain killers, and worked up the nerve to hobble back over to the shop, open the back door, and do a couple of checks on the '09 CR. In Diagnostic Mode, engine off and cold (80 degrees) : 159 steps Engine started in DM: average 97 steps at 14-1500 rpm After idling for a minute or so, shutting off, and re-entering DM w/engine off : 127 steps Re-started engine, same as before, average 97 steps at 14-1500 rpm Turn engine off w/kill switch: 115 steps Edited to add that this bike('09 CR) has a Race Use Only engraved ECM. The '08 R has a stock ECM and a PC V, but there's no oil in it at the moment, so I can't check it. (Message edited by Panshovevo on October 31, 2015) (Message edited by Panshovevo on October 31, 2015) | ||
| Danoz34 |
Replaced valve and same issue is present. Hmm | ||
| Panshovevo |
Did you check all the wiring between the IAC and the ECM? Also, I need to read up on this myself, but I wonder if your throttle plates are correctly positioned, and whether everything below the throttle plates is sealed and/or hooked up correctly. Seems like the IAC position is affected by the rpm and MAP, and anything that affects either of them could have an effect on the IAC position. Forgive my rambling here, just thinking aloud, for the most part. | ||
| Danoz34 |
Another note. This one is weird. When I first start up bike tps shows at 2% if I turn the throttle and return it back it will only go down to 2.5% never back to 2%. Could this be causing the computer to think I'm constantly on throttle? Maybe that signal is causing an issue with iac? | ||
| Panshovevo |
Possible. I have some time now, going to dig further into the manual to see what I can pick up. | ||
| Panshovevo |
A couple more questions. Which error code are you getting? What ECM do you have? Is the idle speed any different than normal, i.e. Has it always idled as low as 1250 rpm? Did you check the seat where the Pintle seats in the throttle body when you had the IAC out? | ||
| Danoz34 |
Found the problem. I was doing a vacuum leak test and found that the little rubber connectors from the IAC housing to the throttle body had a horrible leak. I couldn't find an individual part number seperate from the throttle body assembly so I used "right stuff" gasket maker and put a bead around both ends. Let everything sit for an hour and the bike has been running awesome. No CEL, no rough idle, and the popping exhaust sound is gone. I've attached pictures to show what it was.   | ||
| Panshovevo |
Cool, glad you found it and got it sorted out. Another educational experience. | ||
| Willmrx |
Had the same issue! Someone needs to make them available as a separate part. The bummer, is that theses parts will take you down a rabbit hole, in till you figure they are the issue. (Message edited by Willmrx on November 01, 2015) | ||
| Panshovevo |
Might have helped Danoz34 avoid buying parts he didn't need if you had mentioned it before. | ||
| Danoz34 |
Okay, so the problem is back. But I'm not getting any check engine light now. The IAC steps are good, tps reading is good, fuel pressure shows good, map shows good. The bike will sit and idle fine. It seems to work fine in neutral. When I'm in gear it will die once I pull the clutch in usually (stop signs, stop lights, etc). The rpm will drop to about 1100 and then it will usually die if I don't give it throttle. It does almost every time I'm coming to a stop. It's intermittent too. Like once I'm in motion I have no issues that I've been able to detect. The vacuum leak from last time is not present either so that rules out that issue. I need help. I dint know what else to do or where to look considering I'm not even getting a CEL this time. I don't have any good buell shops in the area that I know of. My Harley shop doesn't even want to service my bike as they done have a buell tech. I'm lost. Please help |
