BodybyFisher Posted June 4, 2017 Author Report Share Posted June 4, 2017 I am sorry I missed all of this I have been distracted with a lot of stuff. I am happy that she is running well and the ISC is working! @OldCadTech knows his stuff. This is a great thread on the ISC, its slowly becoming a thesis paper! Quote Pre-1995 - DTC codes OBD1 >> 1996 and newer - DTC codes OBD2 >> https://www.obd-codes.com/trouble_codes/gm/obd_codes.htm How to check for codes Caddyinfo How To Technical Archive >> http://www.caddyinfo.com/wordpress/cadillac-how-to-faq/ Cadillac History & Specifications Year by Year http://www.motorera.com/cadillac/index.htm Link to comment Share on other sites More sharing options...
the gold2 Posted June 8, 2017 Report Share Posted June 8, 2017 It goes without saying that BodybyFisher and OldCadTech are the "stuff" of Caddyinfo. This forum relies on expertise ! Quick update: yesterday, after several drivings and about 130 miles, the onboard computer seems to have finally reached its digital equilibrium (automatic idle learn) and the idle is now at about 650/675 RPM (at operating temp in drive at standstill and in park) as per eyeballing the tach. Freeway MPG was 18.9 (120 miles) during the immediate post-ISC replacement with slightly high idle. With the idle settled down now I should be getting better MPG for future freeway driving. Thank you !! BodybyFisher 1 Quote Link to comment Share on other sites More sharing options...
OldCadTech Posted June 8, 2017 Report Share Posted June 8, 2017 Thank You! BodybyFisher and the gold2 2 Quote THERE IS ALWAYS ENOUGH TIME TO DO THE JOB RIGHT - THERE IS NEVER ENOUGH TIME TO DO THE JOB AGAIN !!! Link to comment Share on other sites More sharing options...
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