Has anyone ever used one of these for our cars? I recently bought one when amazon had it on sale. I think $375, normally $500. I used it on my buddies 2003 Z4 and it was amazing, even having never used a scan tool before. I realize a 1996 was basically the first year for obd2 and all the features of the D7 will not be available. I tried connecting under the jaguar icon then using my year and "straight six" icons. They did not have xjr or super charged icons. I understand they are good about updating so I'll email them. The only fault codes I got were from the drivers seat module. I then tried the obd2 icon which I understand can be used if the make/model icons are not successful. Basically no data. I was able to get a few basic live data parameters when the car was running but no codes.

The thing is there should definitely be engine related codes as it's barely running. This car is a new purchase. I've basically driven it three times now for about 2 hours each trip. First trip fine. Second trip in the rain I felt a slight miss when I was almost home. Third trip missed like hell, stalled a few times, barely made it home and used a full tank of gas to go about 150 miles.

I had it delivered directly to my mechanic by BAT. I had them do a bunch of work but nothing relating directly to how the engine runs. I saved that for myself. I've read tons of threads here about engine tune ups and preventative maintenance. I've already ordered most of the parts for this and I'm looking forward to the work.

I'm not asking what to look for with respect to the engine problem. Those things are well covered in many threads and based on those reads I have three suspects! I might write up a different thread detailing the issues, thought process and eventual fix later. I'm am however asking: A) Shouldn't the check engine light be on? B) Shouldn't there be codes? C) Has anyone successfully used a D7 on a X300? D) Perhaps a cheap code reader is a better fit for these older cars? I will be doing more research on the D7 next.

Damnit man! I was hoping the codes would point the finger at one or all of my three aforementioned suspects!

 

From the context, we'll assume you've obtained a supercharged 4.0L X300. You've been here long enough to know you should tag all of your Jags in your signature line so we aren't all futzing about trying to come up with solutions only to find you're talking about an X308 or series II, or something else and somehow managed to stick your post in the wrong forum.

Now as to X300's ....I don't know about the other models, but when it comes to setting codes for misfires, the X300 is the anti-X202. X202 will flag misfire codes for the slightest of reasons, including no reason atall. If it's Wednesday...well then I must set a misfire code.....X300, no sir! Pretty much comes down to, if 1 of 6 is firing on occasion, it's good, no need for codes.

You should be able to check the functionality of your check engine light at key-on. If it illuminates then....it is working. If you are concerned that the engine control computer has gone "NORDO" and isn't communicating with the instrument panel, pull the MAF plug and see if it lights up for you. IIRC, that one is a reasonably sure-fire code setter. Oh! Better yet....unplug the air pump and drive it around a few days. You should get a check engine and a P0411 when you read it. That one is dead-reliable, it is just sporadic as to when it runs the check and sets the flag. My 95, recently relieved of daily driver-duty, has NEVER had an operational air pump during my ownership (2010-present; 63K miles to 280K+) and I get the P0411 on average about 2x/mo back when I was driving it 100 mi/day 5 days/week.

 

Thanks for the ideas. I'll try that tomorrow. I've added all my jags in my profile but I haven't figured out how to add them to the signature. I'll try again now. I have emailed Xtool for help as well.

 

Test

 

xtool coverage is well known to be garbage

launch clones do more but even then they’re still going to struggle.

 

Aside from a code reader that is questionable

If it is not getting the correct amount of fuel, it will not give a code

You have 2 fuel pumps on the supercharged engine

the # 2 fuel pump will not turn on until 4000 RPM than drops out passing back through and turning off at 3200

Both fuel pumps rely on the CKPS as an enable which will not give a code in the many uses of the CKPS signal like the tach and ignition timing

Someone found the face of the CKPS dirty interfering with the seeing of the reluctant gear

Do you have the correct ECU installed ?

Correct MAF ?

 

Disclaimer: I know nothing about the more expensive tools. I put 300 miles on the car since I started this SMOG testing ordeal, so I’m just the driver.

My Blue Driver returned zero codes, but was right that my SMOG was “not ready to test”. All but one (sensor temp) of the categories was unchecked.

My mechanic ran his and pronounced “I need to bring in my ‘96 scanner.” After plugging the old scanner in, he said “your downstream O2 sensor is bad”.

He popped in a new sensor, I drove it 25 miles, and I I plugged in my BlueDriver.

 

Oopsy, butterfingers,

… lo and behold, my BlueDriver now gave me all ready except the “catalyst”. This worried me because the one O2 sensor was very expensive.

I steeled myself and told my mechanic and his face lit up and he said “Oh, now it will pass!”. He runs his scanner (in Pennsylvania he has to send his scan to the state, apparently) and 15 minutes later I had the coveted stickers. (Can’t imagine doing this in California).

When I asked him, he said something about the scan rate of the old and new sensors are different and the computer somehow recognizes this and it might take weeks to get a green light on the catalyst.

Very grateful for my extra Christmas present!

Happy New Year! Happy Motoring, as Esso used to say in the 1960’s!
tom
p.s. All this to say there is a lot of info available, even in the 96 cars, but you need the scanner that can report them.