HT4100 4.1, 4.5, 4.9 Discussion, Need Advise on ISC Adjustment in Cadillac Engine Discussion; Hey all, My ISC motor died yesterday and I was just wondering - can I just adjust the screw on ...
- 08-25-03 12:38 PM #1
Need Advise on ISC Adjustment
My ISC motor died yesterday and I was just wondering - can I just adjust the screw on the piston to match the old ISC motor? I went through my haynes manual and found you had to get a tach, apply 12V to one of the terminals to retract it, etc. blah! Way too complicated and I don't want to spend like 70 bucks on a tach!
Is there an easier way to do this?
- 08-25-03 04:23 PM #2
Re: Need Advise on ISC Adjustment
It's called "min-air adjust" and if you don't do it, the idle and off-idle performance will be questionable at best. You may also see some check engine lights and codes. If you need the procedure, let me know.