The OBD is an Acronym for: "On Board Diagnostics" meaning it can be
read without using a tool like: http://billhughes.com/faultCode.mpg
God Bless America, ßill O|||||||O
http://www.billhughes.com/

Jeff Strickland wrote:
>
> Your '01 is OBD II compliant, this means you can get a code reader and find
> out for your self what made the MIL light come on.
>
> You can buy OBD II Code Readers for anywhere from about $60 to about $175.
> The cheaper units have limited capability, the more expensive units have
> more features and abilities. My casual observation is that the units that
> cost about $100 are the best value. These units offer the useful features
> that the lesser costing units do not have, but they leave out features that
> you probably won't use anyway.
>
> Some auto parts stores will let you use a reader for free, the assumption is
> that you will learn the Automatic Framis Sensor has failed, and the store
> wants you to buy the AFS from them. They want you to buy the special wrench
> to put it in, too.
>
> "Firebird" > wrote in message
> ...
> > I have a 2001 Grand Cherokee Laredo, with 59,900 miles. This morning
> while
> > starting the car,
> > it was a little rough idling and I noticed the malfunction indicator light
> > stayed on.
> > I used my other car to get to work today. I checked the gas cap, it seems
> > tight.
> > What could this be?
> >
> > Thanks
> >
> >