I have a 2005 Jaguar xj8 with 130k miles. I started having electrical problems getting all kinds of codes. Was told to replace the battery, I did. The only problem left is the transmission jerks when I put it and gear, it will drive but it start off like riding a bronco. Any ideas.Carlos

Then why are you here,so we can guess at
the battery issue ?

You always start with the battery in all testing
situations, regardless of what your told

If you working on suspension,brakes or tire work,
then you forget the battery, obviously

Once you have a good battery,then your check for
OBD Fault Codes

Your car won't start,problem,maybe just the battery

The trans issue,once your past the battery & the motor
runs,you check all data,road test & then get on with module
codes & the trans problem, if there is one

A failed battery will leave lots of wrong info in the systems

get a new battery and test.

the problem is in the electronics of the transmission
from your statements , it indicates that the TR sensor is not working properly and the transmission has problems selection the correct ratios
the engine light reports on both engine and transmission faults
first get the fault codes then fic/replace the items causing the codes

factory immobilisor is my first suspicion

definitely not once a year at 8-10k. 3-5k miles on average and if a lot of highway miles 4-6k and if you don't put that many miles on it then at least 1 once a year no matter how few miles

Its not codes, what they mean is this. Your car learns how you drive, this information is stored in the Engine computers memory. If the battery is disconnected or is discharged, this memory is lost along with certain other operating parameters. One of the things lost is the "idle point" The cars computer should rewrite this information itself within about 50 miles of driving, if it does not, you may have to disconnect the battery again, leave it disconnected for about 5 minutes and then reconnect. Drive the vehicle to reload the lost information. Now, did you charge the battery whilst it was still connected to the vehicles electrical system..? If you did, you may have damaged the cars computer. This happens due to the higher voltage supplied by all battery chargers.. If disconnecting the battery does not seem to help, take the vehicle to a professional and have the cars computer checked properly.

engine code p0430 for 2005 toyota sienna

hi,change the gear box solonied c.should b ok than ali g autos birmingham 07971335303

unfortunately when that code, and that gear box fault light comes on, its pretty much game over for the transmission. It only a matter of time before performance of the transmission gets worse and worse. BUT that transmission is VERY easy to replace, i would check out a few trustworthy independent shops to give you a better price! I am usually a die-hard dealership, having been working at this jaguar land rover dealership for the last 2 years, but you are pretty much for sure going to be a cheaper price on the labor and like i said it is a pretty easy task.

My only precaution MAKE SURE IF YOU GETTING A USED TRANSMISSION THAT YOU GET SOME TYPE OF WARRANTY ON IT. Too many times have I seen customers loose thousands of dollars paying someone to put a used engine or transmission and have it fail almost right away.

You might need to get your electrical system checked beause may have a short that could be draining the battery while you don't drive. Try to get it checked at more than one place so you can find an accurate answer for your problem.