Hello all,

Hoping someone might see something I omitted. My XJR stalled on me the other day at a stop, restarted and it ran fine. Scanned the car and found P0101 (Mass Air Flow circuit high resistance).

I have done the following:

1) Cleaned the MAF & Throttle body, including all electrical connectors
2) Hard reset
3) Tested resistance values of all the throttle body and MAF wiring, I followed the JTIS guidelines and everything tested fine.
I have attached some photos of my live data. At idle my LTFT is between 10-15 steady and when I apply the throttle it spikes down to zero. This to me looks like a vacuum leak.
4) I have visually inspected for vacuum leaks and tested vacuum pressure at idle, which is about between 14-16 in Hg. steady.

My next things to look into are:
5) Test fuel pressure (I doubt this is an issue, I recently replaced the fuel pumps and filter)
6) Remove throttle body and check the vacuum line elbow underneath for any leaks
7) Remove the EGR and clean

Is there anything anyone can recommend?

 

In case you have not seen the full description for the code P0101.