2003 Disco 68000 miles. Last week I pulled 2 codes P0130 and P0171. Cleared themselves a few days later. One week Later CEL came back on pulled P0130 and P1171. Purchased truck 1 year ago with 62000 miles. Did the 60000 service at that time. Including serp belt, plugs and wires. One month ago engine had a tick, CEL light(P0130 and P0171). Had 2 front O2 sensors changed, engine flushed, switched to Mobile1 syn and K&N Filter. Slight tick still there. Also have some leaking(rain water). Front Drivers side A pillar and drivers side Alpine window. Been a tuff week for me and my Disco. Any help, advise, thoughts or prayers would be apprciated!

 

Any oil pressure problems?

 

You are running lean, may have a MAF failing. Does your exhaust stink, how is the tranny shifting into 4th?

 

Well it is a 2003 so oil presure is always a major concern. The first time I noticed the tick I had the oil presure tested, no problems. Oil pan dropped to clean out oit pick up tube, not clogged. I have not noticed any smell from exhust or problems shifting. thaks for any advise or ideas. Thought maybe I should also change out the back 2 O2 sensors even though CEL indicates front!

 

MAF ,,,,, mass air flow sensor.

 

K&N oil filter 3001, OEM air filter. Sorry for the confusion. Do you think the best action to take is changing the MAF, as well as the back O2 sensors?

 

Just a thought. Since im showing codes for front sensors (even after replacing front O2's) and have the tick noise whenengine warms up. Maybe an exhust leak? Intake manifold?

 

So I decieded to clear the codes to see what would come back before purchasing any parts. P0130 is the only code that came back. Odd since the 2 front O2 sensors are new. Im stumped!

 

Still stumped. Now Im talking to myself! Guess I need a mechanic to check it out (For the truck, a doctor for me).

 

do you hear the noise from the drivers or pass side of the car, an exhaust leak can easily set a lean code, and a o2 sensor code