i have my jaguar for week now and still testing what is wrong , another strange problem detected - today i was driving in town for few hours and noticed that engine power is going down, then i entered highway and set 3rd gear manually, i very hardly reached 100km/h or 60mph , then stopped , turned off the ignition, waited for few mins and started to drive again looks like pretty much all power is back,
You say "then stopped"...did you stop or did it stop on its own?
Check the body ground strap on the battery (mesh). Do you have a Bluetooth OBDII unit to monitor your engine with?
i mean i stopped , yes i have Bluetooth OBDII but there is no connection to car ECU , i have tried autocom OBD scanner , sometimes it connects to ECU , sometimes not , after 20 tries it connects... have no idea how this can happen , obd port looks okay
On the ELM327 based tool you have to specify which car you are looking at . You may have a communication problem with the device bluetooth signal to a laptop or smartphone . I use the USB hard wire version of a ELM327 to a laptop . There are some issues with the device drivers you can find online as there is a version 1.3 and 1.5
The auto parts store will read the OBD 2 codes for free and will get your further in diagnosing your issue but will not read live date as you are driving around like a ELM327 . But it will give you flagged or latched items to your attention like TPS A and TPS B . May not see specific Transmission codes as this is dependent on the quality of the OBD 2 reader as different stores use different readers so you can try a couple of different store and see . Make sure you write down the codes and do not reset the codes until the last store visited . Drive for a week and see if new codes reappear as some codes can be stored a year back and may not be relevant to today or present .
There is what is known as a Hard Reset on the the car including the many ECU's on it but the engine ECU will have to relearn some items before it will get back to normal after you hit certain targets like RPM , Time and such . So it will run off or out of whack until then . I wouldn't recommend it unless you can keep track of both your present issues and the relearning issues induced by a Hard Reset . You would have to compartmentalize your thinking otherwise you could get lost in your thinking as well as confidence . The Hard reset is more then a removal of the positive post on your battery and is a good tool to learn for the future .
I use the ELM327 with the Torque app., like LP says, put your vehicle info in it. But, it still doesn't always link right away and its the phones Bluetooth I discovered. I have a Bluetooth headset and if its on trying to sync, it won't do it. I have to shut the headset off and make sure I'm not linked to my laptop or anything else for it to sync.
Sometimes it will only link if the car is running. It usually links with just the key forward. Its that fun game with electronics we all play.
