Cadillac Escalade, EXT and ESV Forum - 1999 - 2006 Discussion, 02 Ext idle drops to 300 at times in Cadillac Escalade Forums; I would like it to stay at 500. But sometimes when i first start it up and back out of ...
I would like it to stay at 500. But sometimes when i first start it up and back out of the drive way (or pull ahead from a parking spot) it kinda jerks cuz it drops down to 300 rpm and then back to 500. What would cause this?
There is a TSB out for this. Go to your local Cadillac dealer and have them re-flash the ECM with the updated program from GM. Mine did this as well until it was re-flashed and now it idles and drives great.
The beginnings of a coked up Throttle Body could cause these symptoms. Mine use to do the same thing but with more frequency. It would dip down to 300 and then back up. For $5 and 15 minutes you could clean the TB and see if that's the fix
When I first cleaned mine it too looked pretty clean but once I finished it ran like a champ. Give it a try. The worst that could happen is that you now have a clean TB. Just make sure you get a TB cleaner that's safe for all coatings. You have a Teflon coating that's sensitive to harsh cleaners like carb cleaner. Any auto store carries TB cleaner for all surfaces. Good luck.