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Car Forum / Driving, Maintenance, Tuning / Maintenance and Repair / July 2005Are all oxygen sensors equal?
For the same number of wires, are all oxy sensors the same? I'm looking to replace these in my two trucks, and AFAIK both use 4-wire type (Isuzu Trooper 98 & Dodge Durango 99). Can I just go with generic 4-wire sensors and assume they will work fine in both applications? Peter Your first problem will probably be the fact that the connectors are differen,t now you have a splice scenario, which wires go where. There are other issues but that alone is enough. > For the same number of wires, are all oxy sensors the same? I'm looking to > replace these in my two trucks, and AFAIK both use 4-wire type (Isuzu > Trooper 98 & Dodge Durango 99). Can I just go with generic 4-wire sensors > and assume they will work fine in both applications? > > Peter > Your first problem will probably be the fact that the connectors are > differen,t now you have a splice scenario, which wires go where. There are > other issues but that alone is enough. Splicing wires is piece of cake, what's so tough about it? I have access to shop manual, so connecting the wires correctly should be no problem. I imagine they're color-coded anyway Peter Do have the shop manuals for both vehicles to know which wires correspond to which circuits, the color codes are different. >> Your first problem will probably be the fact that the connectors are >> differen,t now you have a splice scenario, which wires go where. There [quoted text clipped - 5 lines] > > Peter > > Your first problem will probably be the fact that the connectors are > > differen,t now you have a splice scenario, which wires go where. There are [quoted text clipped - 5 lines] > > Peter I'm pretty sure the actual sensor wire (as in non heater or ground wires) is RFI shielded. Not easy to splice at all... Erik > For the same number of wires, are all oxy sensors the same? I'm looking to > replace these in my two trucks, and AFAIK both use 4-wire type (Isuzu > Trooper 98 & Dodge Durango 99). Can I just go with generic 4-wire sensors > and assume they will work fine in both applications? > > Peter There are several types of sensors out there: http://www.forparts.com/Bos02update2.htm JazzMan  Signature********************************************************** Please reply to jsavage"at"airmail.net. Curse those darned bulk e-mailers! ********************************************************** "Rats and roaches live by competition under the laws of supply and demand. It is the privilege of human beings to live under the laws of justice and mercy." - Wendell Berry ********************************************************** >> For the same number of wires, are all oxy sensors the same? I'm looking >> to [quoted text clipped - 6 lines] > There are several types of sensors out there: > http://www.forparts.com/Bos02update2.htm OK, since I know I need heated type, and both trucks are pre-2001 then I can safely assume it's either LSH or LSF, and in fact there's not that much difference between those two (except shorter heat-up time & better performance for LSF). Am I right? Peter > For the same number of wires, are all oxy sensors the same? I'm looking > to replace these in my two trucks, and AFAIK both use 4-wire type (Isuzu > Trooper 98 & Dodge Durango 99). Can I just go with generic 4-wire > sensors and assume they will work fine in both applications? No, you cannot. There are different heater wattages, different sense ranges and different reaction polarities. Use a sensor with an underwattage heater and the O2S will be slow to come up to temperature, which will worsen fuel economy, driveability and emissions. Use a sensor with an overwattage heater and you risk damaging the O2S heater control circuit, which is within the engine control module (this would be one of those times when being a cheapskate and refusing to buy the correct sensor for the application would cost you a lot of money). Use a sensor of the wrong sense range or reaction polarity and the engine won't run well at all. Use a Bosch aftermarket sensor and you get to do the job again soon (and again, and again, and again...) > Use a Bosch aftermarket sensor and you get to do the job again soon (and > again, and again, and again...) Is there a manufacturer who consistently makes quality units? One would think that Bosch would have a good reputation as an OEM supplier to the auto industry, but that apparently is not the case. >>Use a Bosch aftermarket sensor and you get to do the job again soon >>(and again, and again, and again...) [quoted text clipped - 3 lines] > supplier to the > auto industry, but that apparently is not the case. I think the key word is "aftermarket". Bosch seems to have quality parts for OEM applications such as braking systems. Their aftermarket division gives up crap like their platinum spark plugs. Oh - NTK (NGK) and Denso oxygen sensors are supposed to be pretty reliable. Don't know much about US OEM, but perhaps ACDelco and Motorcraft are OK. > >>Use a Bosch aftermarket sensor and you get to do the job again soon > >>(and again, and again, and again...) [quoted text clipped - 6 lines] > parts for OEM applications such as braking systems. Their aftermarket > division gives up crap like their platinum spark plugs. Exactly. A large percentage of the Bosch aftermarket spark plug line is now made (even more poorly than before) in China. Their aftermarket O2 sensors are unreliable junk. Their relays and general electrics are still good; we'll see how long that lasts. > Oh - NTK (NGK) and Denso oxygen sensors are supposed to be pretty > reliable. Don't know much about US OEM, but perhaps ACDelco and > Motorcraft are OK. No data on Motorcraft general aftermarket, but ACDelco, NTK and Denso are good, ditto Standard-Bluestreak. >> Oh - NTK (NGK) and Denso oxygen sensors are supposed to be pretty >> reliable. Don't know much about US OEM, but perhaps ACDelco and >> Motorcraft are OK. > > No data on Motorcraft general aftermarket, but ACDelco, NTK and Denso are > good, ditto Standard-Bluestreak. What about Borg-Warner? Peter > >> Oh - NTK (NGK) and Denso oxygen sensors are supposed to be pretty > >> reliable. Don't know much about US OEM, but perhaps ACDelco and [quoted text clipped - 4 lines] > > What about Borg-Warner? Fine! >> >> Oh - NTK (NGK) and Denso oxygen sensors are supposed to be pretty >> >> reliable. Don't know much about US OEM, but perhaps ACDelco and [quoted text clipped - 7 lines] > > Fine! Thanks for your help, Daniel! Peter > > >>Use a Bosch aftermarket sensor and you get to do the job again soon > > >>(and again, and again, and again...) [quoted text clipped - 11 lines] > sensors are unreliable junk. Their relays and general electrics are still > good; we'll see how long that lasts. This seems like a losing strategy for a company like Bosch, which has a pretty good name. If they are in transition to Chinese parts, they must think that they can bring up the quality level to OEM demands. The Chinese are capable of quality, but their feet must be held to the fire. OR, Bosch may continue with a dual line, which could eventually ruin their aftermarket business, not to mention bringing up the spectre of collusion with the auto manufacturers. I cant imagine this would be a course they would like to take. |
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