A client brought me a 04 X-Type
for spark plugs (Tune up) when she got here she said it had some drive-ability problems and the check engine light was on. We changed the plugs and manifold gaskets had showed signs of a little leak by on one of the gaskets.
We checked the codes and they where as follows P0171, P0174,P0300,P0302,P0304,P0306,P0314,P0153, P01603,P1111,P1000, P1314,P1316,
The drive-ability as road tested by us was lack of power when a cretin amount of pressure was applied to the throttle at about 40 MPH less pressure and the problem stopped more pressure and the problem stopped. And that is an intermittent problem.
We addressed a leaking PCV hose, New Plugs, New Filters, and a intake component cleaning.
We cleared the codes and test drove the car all was well for the first 9 miles and until we said “this car is nice” than the check engine light came back on with the following codes.P0174, P0300, P302, P0304, P1314, P1316, P1000