'07 Idle Issues

T

teddyboy

New member
Yes, and I've been in denial, mostly because I don't want to fool with changing it. A re-flash is much easier, but I'm not betting it fixed the idling problems.

Can you get to the two IAC bolts by raising the tank? It looks like a matter of two bolts and one electrical plug. The manual says to remove the entire induction module.
 
Told ya! :-)
Also there's another thread on here, I think about cleaning the throttle body for a better idle. Same deal, remove the ac open the butterfly then swab with a drenched in cleaner paper towel. Might be a better way but that was the suggestion.
 
I've run through more than 3 tanks of gas since my reflash. My low idle problem is gone and has not returned. The intermittent popping out of the exhaust when the idle problem would occur is also gone. Prior to the reflash, I replaced the TPS and thought I had the problem licked but within 75-80 miles, it happened again. I checked and adjusted the TPS voltage (by adjusting the throttle plate setting) to .573 volts, cleaned the throttle body, the IAC port and the idle problem was still there. It was only after the reflash that the problem seems to be resolved. Just wanted you all to know, it seems to have worked for my problem.
 
Well, I've ridden the bike maybe 10 miles since cleaning the IAC area and both high- and low-idle problems did crop-up once in that short time span--so the cleaning idea apparently didn't work. I'll give it more time to clean itself, but I'm thinking the only real option remaining is Dawg's suggestion to replace the IAC, and that will require removing the induction module.

I may also replace the manifold seals while in there, as my old Evo needed them replaced about every 30k and I'm at 37k now. OTOH, these idle issues don't amount to anything that is causing any real problems and is mostly just an aggravation that doesn't occur that often.
 
Yeah, at 36k, I may want to replace the manifold and injector seals just for GP. While I'm there, the IAC isn't very expensive compared to the labor to get there and I'll probably replace that at the same time. No need to risk an intake leak which will cause all sorts of crap down the road.
 
I don't think I have any intake leaks yet, as I've been using a borrowed PCV LCD display for the past two months and it is not showing me any unusually rich fuel adjustments that would indicate a manifold leak. That all looks normal, and if it was leaking there would be some weird Fuel Adj. numbers show up at idle and low-TPs where manifold vacuum is highest.

I just took a nice hot ride to check things out and had no idle issues at all, the first time in a week or two. I changed spark plugs this AM, but I wouldn't expect that to change anything. That one favorable experience means nothing, however, as I've had it go weeks without any issues, then have one or maybe 10 in the course of the next week.
 
Cleaned the IAC a week ago, just as everyone has suggested. Pulled the breather and sprayed the IAC port and swabbed everything out. Seemed to help for a couple of tanks of fuel, but went on a 800 mile trip this weekend and had both the low and high idle issue while gone. First time for the high idle in a long while. Had to shut the bike down to get ride of it. Haven't had a chance to look into the re-flash Mongomark had luck with.
 
I had a problem with the high-idle issue last September with about the same frequency as now, and I cleaned the area like you did, which helped for a month or two until cooler weather appeared. The last time I didn't toggle the IAC motor with the kill swiitch like I did Saturday, which may help. When the weather warmed up this year the high-idle became less frequent but in the past month or so it's gotten much worse and the low-idle issue has popped-up too. As I mentioned above I cleaned my IAC port again Saturday and a Sunday ride didn't manifest any problems, but it's too early to tell. I think an IAC replacement is going to be necessary eventually.

I wouldn't bother with the re-flash to -07E, as it did nothing for my problem.
 
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