I had the battery disconnected while the car sat for several months and now have reconnected it and have driven 20 miles or so around my neighborhood. I am pass due on my state inspection so I would like to get it done before the police notice. Any idea how long it should take to get all the drive cycle sensors and the computer up to speed? I need to get it out on the motorway at 60 mph for awhile and will do it tomorrow.

 

Rule of thumb is a hundred miles, streets and frwys. Make sure your fuel tank is almost full so I will run the evap test. Frwy is important for 02 sensor for cat test.

 

thanks.

 

Yea its a pain in the ***, there are guides online that tell you the specific parameters for *most* computers, dunno what the Disco's wants but coudl help you save some time trying to hit all the requirements quicker.

 

The other thing you need to be aware of is your ECU and tranny computer have lost their adaptive memory with the battery being off for so long, you should drive the truck for 3 or 4 days to let the computers adapt to you and your driving so you don't fail.

 

Hey Mike, for the unschooled... what exactly is "Adaptive Memory" and how best not to fail?

I am driving it every day, a mix of neighborhood streets with lots of low end acceleration and a mix of mid range roads at 30-50 mph and also the freeway at 60-70mph. Lots of engine stops and restarts as I shop and run errands, etc.

Hope that is the way to do it! So far it is running great. And I noticed the mileage on my just expired inspection sticker shows I only drove it 400 miles or so in the last year what with all of my international travel. Great way to keep the fuel costs down I guess.

 

You are doing the right thing and it will be back to it's normal self in a couple days of in town and some high way driving.
Adaptive memory is the the way the ECU and tranny's computer learn your driving habits so as to maximize the trucks performance.
One every year or so, I have mine cleared, my tranny picks up some weird shifting issues over time and by doing this, when I leave the shop, it is like driving with a new tranny.