HT4100 4.1, 4.5, 4.9 Discussion, 4.9 isc adjustment: Thanks Ranger in Cadillac Engine Discussion; Thanks for all the info on how to adjust the isc. After I had an intake gasket replaced, the idle ...
- 02-29-08 02:45 PM #1Cadillac Owners Member
- Join Date
- Sep 2005
4.9 isc adjustment: Thanks Ranger
Thanks for all the info on how to adjust the isc.
After I had an intake gasket replaced, the idle was high and the motor felt like it was on cruise control when I lifted my foot off the gas. I replaced almost every vacuum hose, but couldn't fix it until I tried the easy isc idle adjust as suggested by Ranger and others. Now my 95 Deville with 4.9 runs like a Cadillac again. Thanks to everyone.