epricedright Posted September 23, 2004 Report Share Posted September 23, 2004 Well I finally found time to put on the new ISC motor and it seems to work fine now. It no longer sails on after lifting off the accelerator, and the ISC no longer makes the ratcheting noises. I did all the adjustments as well...very time consuming and at times frustrating. Won't be nearly as hard next time as I somewhat know what I'm doing now. The only thing I'm still concerned with is the high idle at start. At start, for around 3-4 seconds, it idles pretty high and then drops down to normal. Is that normal? I can't tell what RPM it starts at, as it has no tach., and I can't put it in diagnostics mode that fast at start up to get a tach reading. I'd guess round 1300-1500 RPM's or so. Also with the ISC unplugged in the ISC override mode, plunger fully retracted, my idle was at 625-650 and not at the manual recommended 525 RPM's. The manual stated to adjust the min. idle screw if there were no vac. leaks. I didn't have the special tool to adjust the mininum idle speed screw, so I left that alone. Do you think that could be "a" or "the" problem? I visually checked the vacuum lines and they appear ok. Is there a better way to check the vacuum lines than visually? With the ISC plugged in, engine warm at 100-105 C (212-221 F), it idles at around 675 to 700 RPM in park. Is that about right? I just checked it again just now, engine colder and it was idling at around 600-650 in park. Thanks to everyone and this board as a whole for all the help! A special thanks to Mike and adallack for going way out of your way. Adallack, I'll get that ISC in the mail for you Priority Mail. I need to confirm your address though, please send me your address in a PM. Thanks again! Link to comment Share on other sites More sharing options...
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