Hey guys,

I want to invest in a scanner for my 02 xj8.

Bluetooth or wired?

If Bluetooth, will it work with an iPhone?

Which are The recommended ones?

I want to go on eBay an get one asap

 

Most any bluetooth adapter will work. Some have dedicated apps that they come with (Someone on here just bought one not long ago that had it's own app), but pretty much any of them will work the same, and then it's just a matter of what app to use. I use the Torque Pro app, which also allows real-time monitoring with no wires or anything. The Pro version of the app (you can use the free to see if you like it), is about 6 bucks in the store, and the adapter shouldn't run you more than $20 for a basic one, or if you get something with it's own, it might be a little more. All depends on how fancy you want, but Torque and a cheap one have worked very well for me for a few years now, both in reading, and resetting codes, and keeping an eye on things.

 

A big +1 on above recommendation.

 

+2

I use Torque Pro & a $13 Panlong blue tooth scanner.

https://www.amazon.com/Panlong-Bluet.../dp/B00PJPHEBO

 

While bluetooth works well with the Android OS, I have read that it is problematic with the iphone. Wifi has been recommended for the connection to an iphone. Also I don't think Torque is available for the iphone.

 

Torque might not be, but there are plenty of other options for it, like EngineLink (https://itunes.apple.com/us/app/engi...591557194?mt=8). Just a matter of finding one you like, a cheap adapter (the one linked in a post above comes in two versions - one BT only, and one WiFi for iPhones) to connect OBDII and you're good to go. Just go to amazon and type in OBDII iphone adapter, and should be a world to choose from.

 

I use the OBDCOM II wired scanner with a notebook tablet. I prefer it since I can save the screen shots and print them for a continuing look at trends. The scanner is capable of real time monitoring while driving and has all of the features of the wireless units.
Just a personal preference.

 

Hey guys;
Thanks for all the great input.
I got a wireless OBD for my IPAD today.
It works great.
Now I can see what the car is doing in real-time.
My ???? now is this: Now that I can see what the car is doing, what are the "BASELINE" numbers for this car from the factory????
For example, my battery is running at 14.1/14.3. What was the number supposed to be from the factory? I would like to compare the numbers from the factory and 15 years later and see what, if anything, has changed.
If anyone has a base line set of operation numbers for a 2002 xj8 4.0 non-supercharged, I would love to see them. Or if there is a site or forum post that someone can direct me to, that would be awesome.

 

14-14.4 v is a pretty normal range for system voltage while engine is running. No idea abouta table of nominal values for other readings.

 

There are too many sensors to be monitored to give a specific answer.

However, work your way through the set-up, understand what it does, and I am sure we can give you some reference values one by one if still needed by then.

Internet is really your friend in this learning process.

 

Read a lot, it you want to know lots it'll take weeks. (Seriously.) There's quite a bit on this site, incl. Gen Tech, large file area, etc, then there's wikipedia etc

Check the OBD monitors are set. Then check fuel trims as per the many posts.

By all means cast an eye over sensors you can understand to see if they're plausible. Beyond those, there's the reading

OBD is 30 or so years old and has had time to get quite complicated!

Here's a simple engine www.onboarddiagnostics.com/page02.htm