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In gear your idle should be between 625 and 650, if you are in that range, you are ok. Mine will move forward when I am in that range also.. so I know what you mean

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

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When your car is in drive and you are idling at a light or stop sign, should the car keep moving if you let your foot off the brake or should the car stay in place? I feel like I really have to hold my foot down hard on the brake pedal to keep it in place.

You should not need anything more than gentle pressure on the brake to keep the car from rolling forward.. it shouldn't be trying to take off from the light and jumping through the intersection or anything like that.


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Linda - If it feels like its pulling hard, you may be in the early stages of a failing Idle Speed Control motor. Another possibility is that the throttle body may need cleaning.

If it seems to be getting worse, get it checked out. You definitely don't want to be behind the wheel when the ISC motor sticks the throttle open.

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Linda: Check the diagnostic codes and post them:


-- Click Here for CaddyInfo page on "How To" Read Your OBD Codes
-- Click Here for my personal page to download my OBD code list as an Excel file, plus other Cadillac data
-- See my CaddyInfo car blogs: 2011 CTS-V, 1997 ETC
Yes, I was Jims_97_ETC before I changed cars.

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