this winter we changed the tranmission filter gasket kit upgraded from 15 inch wheels to 18 inch wheels and now jag is in limp home mode ggrrrrrr.. dont want to spend 102.00 an hr at rahall to diagnose this , can anyone help me systematically diagnose the issue here?

 

May I suggest you post in the XJ40 forum, as this forum is for Series 3 saloons. The six cylinder cars ceased in 1985, but the V12s continued until 1992, (at about 50 a week maximum !). This is why the forum has 1992 on it -to cover the Series 3 V12s only.

Anyway, have you checked the wheel diameters for the two rim sizes ? It could be this. Certainly on my X350, admittedly a much later car, the wheel size has to be programmed in to the system. It's difficult to to see why a transmission fluid change would throw a limp home mode fault.

 

Dear jtsnakeman,

I have just read your note/frustration with the "limp home mode". Have you fixed the probem without spending $100 plus per hour????

Let me know!

Regards,
Michael