Cleaned IAC, still runs rough - but different
Took the MAF and the air tube off, found that the two tiny screws that hold the IAC in had RED LOCKTITE
, which made it almost impossible to get them off, but brute strength and the right size std screwdriver won out, but it was close :o
I cleaned the carbon off the pintle of the IAC, lubed the little spring some and wiped out the cavity where it goes. Very Black
At that time I also thought I'd remove that funny screen...
I do believe that at WOT, the screen gone made some noticable diff
but it also caused it to almost die during idle/stopping, and then the OBD would surge the idle up to 1500 in an attempt to correct the rough rough idle. So back in went the screen!
Next, I tried driving slow with the cleaned up IAC. Here'* the result. It idles just fine in park/stop. If you do a stop-1500rpm startout, it runs fine. If you do a stop-2000rpm starout (means no speed to immeadiate rpm value with throttle but still slow accell), it'* fine.
if you start at a dead stop, and feed it a tiny bit'o throttle, it runs rough right between 1500-2000 rpm, AAMOF, right at 1750rpm-1900rpm. Chugga-chugga... I don't get this!
So, now I go to the Haynes book...
I didn't check this dimension, so I'll have to take it apart again, measure this setting and put it back.
BTW, a new IAC is about $85-95!!!
So, I'll just have to get along with it doing this until I find a job again!