2001 Venture - Drive Cycle?

[Mike Fisher]

I have a 2001 Chevy Venture. I recently changed the battery myself (something I'll never do again) and apparently didn't tighten everything well enough. After some trouble with the power flickering on and off, the mechanic tightened the connections, but I failed my annual inspection for the emissions test since the computer didn't have enough data after the reset.

Mechanic told me to drive it at least 100 miles.
250 miles later, I still failed - said I still haven't driven past the drive cycle, but he didn't have a magic number of miles I need to drive.

Anyone know what the drive cycle is???
Thanks!
-Mike

[GregA]

Hi Mike & Welcome to the forum.

Did the folks at the inspection place say which tests were not complete? Check any paperwork you might have.

Different tests take different amounts of time to complete, under certain conditions. So there is really no "magic number" of miles. You just have to complete the correct number of cycles under the right conditions for the tests to run.

Now if you had a scan tool that would tell you the status of the on-board tests, then you would know when they are completed. You may be able to borrow such a scanner from an auto parts store. Just ask specifically if they can read the status of the normal diagnostics.

But whatever your do - do NOT reset, or you will have to start all over again.

Take Care,

[Mike Fisher]

>Did the folks at the inspection place say which tests were not complete?
>Check any paperwork you might have.

Nothing specific - no codes or anything.
The paperwork just says it was the emissions - "OBD EMISSIONS INSPECTION - OBD READINESS RESLT: FAIL"

The mechanic said he doesn't have the software yet that would tell him more info specific to this vehicle.


>Different tests take different amounts of time to complete, under certain >conditions. So there is really no "magic number" of miles. You just have to >complete the correct number of cycles under the right conditions for the >tests to run.

Did a lot of local driving - but now I'm putting on 40 highway miles a day, taking the vehicle to work.

>Now if you had a scan tool that would tell you the status of the on-board >tests, then you would know when they are completed. You may be able to >borrow such a scanner from an auto parts store. Just ask specifically if they >can read the status of the normal diagnostics.

Good suggestion - would not have known to try that.

>But whatever your do - do NOT reset, or you will have to start all over >again.

No!
Thanks for your help!
Mike

['97ventureowner]

From my experiences, while there is no "magic number " of miles to go to allow for the tests and cycles to complete themselves, I have found an average of 350 to 450 miles usually does the trick. And that includes city/highway driving, pretty much normal everyday driving for most people.

[scottnhalifax]

well im not trying to put my foot in anyone's mouth but if the tech scanner will not tell you what the problem is than how can it say there is a problem, and from when i was in shop using our genisis, when the scanner said OBD EMISSIONS INSPECTION - OBD READINESS RESLT: FAIL that just said the scanner was not hooked up, no power going through it.
take it to another location. worth your while
scott.