Hans12654
Member
Hello all,
My first Land Rover with 125K on the clock with perfect interior/exterior. So I spend the summer completely rebuilding the entire suspension converting to polyethylene bushings and spring loaded struts removing the air lift system. During the summer my check engine light pops on so I replaced both left a right downstream o2 sensors. After a quick jaunt down the road check engine goes out and stayed out. This September I take a trip to South Carolina from Connecticut and back. After returning 1 day the check engine light comes on again. After reading code it tells me upstream o2 sensor lean. Before I bought the replacement sensors I cleaned the mass air flow sensor and checked for any crack hoses, changed the air filter, plugs and wires. Cleared the code and after cpl hours the light comes back on. I take the plunge and changed both upstream o2 sensors and again drive down the highway and the light goes out on its own. Yea, I proudly go home to the wife touting how smart I am that the light went out. My celebration was premature because the next day light is back. I decide to replace mass air flow sensor because its original and wouldn't hurt under $100 but this still did not solve the problem. There are some videos showing valve cover replacement diaphragms but my 6cyl doesn't appear to have them. They are on v8 Land and Range Rovers. The only thing left that I can think of is the EGR valve. It looks old and rusty and a possible source of the leak but hate the thought of another $300 only to be dissapointed and again the sense of defeat. I also thought of an ECM Update? Does anybody have insight on this dragon I've been battling? Would really appreciate help on this, thanks.
My first Land Rover with 125K on the clock with perfect interior/exterior. So I spend the summer completely rebuilding the entire suspension converting to polyethylene bushings and spring loaded struts removing the air lift system. During the summer my check engine light pops on so I replaced both left a right downstream o2 sensors. After a quick jaunt down the road check engine goes out and stayed out. This September I take a trip to South Carolina from Connecticut and back. After returning 1 day the check engine light comes on again. After reading code it tells me upstream o2 sensor lean. Before I bought the replacement sensors I cleaned the mass air flow sensor and checked for any crack hoses, changed the air filter, plugs and wires. Cleared the code and after cpl hours the light comes back on. I take the plunge and changed both upstream o2 sensors and again drive down the highway and the light goes out on its own. Yea, I proudly go home to the wife touting how smart I am that the light went out. My celebration was premature because the next day light is back. I decide to replace mass air flow sensor because its original and wouldn't hurt under $100 but this still did not solve the problem. There are some videos showing valve cover replacement diaphragms but my 6cyl doesn't appear to have them. They are on v8 Land and Range Rovers. The only thing left that I can think of is the EGR valve. It looks old and rusty and a possible source of the leak but hate the thought of another $300 only to be dissapointed and again the sense of defeat. I also thought of an ECM Update? Does anybody have insight on this dragon I've been battling? Would really appreciate help on this, thanks.
