I have an 02 XG350 and the Tach died a week or so ago. No changes in performance that I can tell. I took it to auto zone and pulled the codes... its throwing P0320 and P1159. After doing some research here, I am leaning towards changing the Ignition Missfire Sensor. I have seen references to the Ignition Failure Sensor here, is this the same thing?

Am I barking up the right tree?

On a coincidental note, my wife told me that when the tach died she lost the low beams as well. after a few days the drivers side low beam came back, but passenger side is still dead. Changing Hi and Lo relays produces the same results.

Also, In june, the car went to hell and they replaced the Mass Air flow sensor, charcoal canister, and fule tank pressure sensor.

Any help would be greatly appreciated.

Also, could someone point me to documentation on how to change the Ignition missfire sensor? Where is the Mass Air Sensor?

Thanks in advance

Marc Beeler
Louisville KY