O2 Sensors Changing
- Thread starter markj11
- Start date
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D
dent
Guest
been looking around myself and found that the cheapest place is discount british parts http://www.discountbritishparts.com/Disco_I/disco_i.html .. have not called them as of yet but plan to very soon as I got a shot sensor
sam
sam
D
dent
Guest
I don't know about the DII but suspect they are same as the D1.. there is 2 on each pipe.. 1 before the cat and 1 after the cat.. hope this helps
sam
sam
Once you locate the bad sensor and if it is before the cat, then the prudent move is to replace. If it is after the cat, then you should really not have performance issues associated with that sensor. Now, if you hate that damn light in your console, you have other alternatives, such as tape, bulb removal etc, but if other issues pop-up, you have no clue unless you suspect something or you run OBD II scanner. They even make psuedo plugs that fool ECU into thinking the sensor works.
I have had a bad behind-cat sensor for almost 3 years and no issues and when I had my mechanic run a scan, he advised me replacment was not really required.
I have had a bad behind-cat sensor for almost 3 years and no issues and when I had my mechanic run a scan, he advised me replacment was not really required.
Thanks. Here are the codes I get:
P0150 = O2 Circuit (Bank 2, Sensor 1)
P0174 = System Too Lean (Bank 2)
P1174 = System Too Lean - Banks 1 and 2 (Suspect HO2S)
P0302 = Cylinder 2 Misfire Detected
The only thing I have done is changed the spark plugs. It has no power and sputters with the service engine soon light constintly blinking util I get to around 70mph then it seems fine.
Thanks,
Mark
P0150 = O2 Circuit (Bank 2, Sensor 1)
P0174 = System Too Lean (Bank 2)
P1174 = System Too Lean - Banks 1 and 2 (Suspect HO2S)
P0302 = Cylinder 2 Misfire Detected
The only thing I have done is changed the spark plugs. It has no power and sputters with the service engine soon light constintly blinking util I get to around 70mph then it seems fine.
Thanks,
Mark
D
dent
Guest
where on the rave cd did you find the DTC codes? I've got a copy of the rave cd and can't seem to find that section...
sam
sam
B
BradN
Guest
Mark
Just because your rig has the fault codes you listed does not necessarily mean you have bad O2 sensor(s). The O2 sensors receive feed back & data from many sensors on your truck. Your mass air flow sensor, engine coolant sensor , etc and engine misfires all can cause your your O2 sensor to go out of range and turn on the check engine light. Most likely what happened is that the misfire cause the initial fault and the other ones were a result of the first fault. A cascading effect. My first question to you is what year is the rig and how many miles are on it. O2 sensors are good for about 100,000 miles +/- and yes some go prematurely. You can spend a lot of money on O2 sensor and still have the same problem as you did before you replace them. If it was me I would do some more investigating. Start with misfire, change the plugs and the wires, clear the codes and go from there. Recently Land Rover has made available tons of technical information, manuals, service bulletins etc at their web site. http://www.landrovertechinfo.com. You have to pay for it, but I paid $10 for a 24 hour subscription and down loaded everything except a few items. There is even a OBD2 diagnostic manual for the GEMS system. It was well worth the $10.
Good luck, just my 2 cents
Brad
Just because your rig has the fault codes you listed does not necessarily mean you have bad O2 sensor(s). The O2 sensors receive feed back & data from many sensors on your truck. Your mass air flow sensor, engine coolant sensor , etc and engine misfires all can cause your your O2 sensor to go out of range and turn on the check engine light. Most likely what happened is that the misfire cause the initial fault and the other ones were a result of the first fault. A cascading effect. My first question to you is what year is the rig and how many miles are on it. O2 sensors are good for about 100,000 miles +/- and yes some go prematurely. You can spend a lot of money on O2 sensor and still have the same problem as you did before you replace them. If it was me I would do some more investigating. Start with misfire, change the plugs and the wires, clear the codes and go from there. Recently Land Rover has made available tons of technical information, manuals, service bulletins etc at their web site. http://www.landrovertechinfo.com. You have to pay for it, but I paid $10 for a 24 hour subscription and down loaded everything except a few items. There is even a OBD2 diagnostic manual for the GEMS system. It was well worth the $10.
Good luck, just my 2 cents
Brad
I would get one from Nathan at Discount Rovers. Cool guy to do business with and very reasonably priced. I tried one of the universal sensors ($50) and it didnt fit. I called Nathan the next day and he had it on my door the following day. Installed and havent had a problem yet. The front sensors can be a pain to get to if you have a coil pack. Good luck.
Referring back to markJ11's post, the codes he describes do not indicate an o2 sensor problem. They indicate a right bank running too lean, either because of a vacuum leak or injector clogging. The blinking check engine light indicates a severe out-of-range situation that, if left unrepaired, will result in a burnt valve or piston damage.
oh well, the expensive route is ok, but too bad you did not follow BradN's advice. I would have started with plugs/wires/injectors-cleaned/etc... O2 sensor is a down-stream indicator of other issues typically.