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Regina O2 Sensors 700 1990

posted by  Rhaj on  Mon Jan 16 22:04 CST 2006
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last visit: Tue May 1 16:25 CST 2007
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Can someone please explain to me if my 1990, 8-valve 740GL with Regina truly requires a unique Oxygen Sensor?

I would be happy splicing in a generic replacemet 3-wire O2 Sensor, but all generics that I could find were called out as "Bosch".

I'd rather avoid the $170 for EOM style Regina if I can.

Please help...








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    NGK 25002 maybe? $99.85 [noon est edit update] 700 1990

    uid 18083's pic
    posted by  lucid on  Tue Jan 17 04:45 CST 2006
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    last visit: Fri Oct 24 12:31 CST 2014
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    A few weeks ago, I believe the NGK site (actually sparkplugs.com) listed their 25002 for the '93 940s and some 240s, in each case picturing a sensor with Red and White leads (only found on Titania sensors). I emailed NGK for clarification but got no reply.

    So today I dug in and tried again. Clicking the "applications" button at this link shows the NGK-25002 this time as applying only to the 740/940 series. And at $99.85 I doubt there will be a lower price if this is the right one.

    Here's another






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      Trying noon est edit update [link] again... 700 1990

      uid 18083's pic
      posted by  lucid on  Tue Jan 17 05:10 CST 2006
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      Here's another google hit that seems to verify the 25002 as Regina type.

      Note that clicking the picture doesn't show wire colors, but defines Sparklugs as nGk, Sensors as nTk.

      Well my linking skills are not good, so here's the URL:

      http://www.ngksparkplugs.com/apps/car_truck_suv/results.asp

      If that doesn't work in a new window, I'm out to lunch. [no good, per Mr. Gates]
      ... hear me chew.

      OK, try this one and work ahead about 3 screens (engine, pick B234 SOHC)

      http://www.ngksparkplugs.com/apps/car_truck_suv/default.asp?nav=60000&country=



      --
      Bruce Young
      '93 940-NA (current), 240s (one V8), 140s, 122s, since '63.







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        Trying noon est edit update [link] again... 700 1990

        posted by  interstition on  Tue Jan 17 06:06 CST 2006
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        last visit: Mon Apr 28 10:13 CST 2014
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        Thanks Bruce. I poked around the NTK site for a bunch of other years and models and can't see any reason to think that 25002 is wrong for Regina. They seem to list all th 740 B230s as 16V, but I that just looks like an oversight.

        I would still love to see someone post that they bought this part and it was right and furthermore that it turned out their old one really was bad. I have started to think that the Titania ones never go bad and that's how FCP and now IPD can get away with listing the generic for both Bosch and Regina without getting the unhappy customers that would get them to change it.








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          Trying noon est edit update [link] again... 700 1990

          posted by  Sumerduckman on  Tue Jan 17 07:09 CST 2006
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          last visit: Tue Aug 21 11:31 CST 2007
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          Hello Andy: They may not go 'bad', but the one I recently replaced at 167k was laaazzzzzzzy. It still worked, but was verrrrry slow on the voltage swings, consequently causing a rich running condition. There was immediate improvement on instillation of the new one.
          --
          Gary Gilliam Sumerduck VA, '94 940 na Regina 160k '86 240 190k, 93 Camry 4cyl 5spd 245k








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      Regina O2 Sensors 700 1990

      posted by  Sumerduckman on  Tue Jan 17 01:49 CST 2006
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      last visit: Tue Aug 21 11:31 CST 2007
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      They are very long lived, so make sure that is the problem before giving up on it. An o-scope really helps in diagnosing these.
      If it does need one, FCP Groton has the OEM 'plug and play' NTK sensors for around $135.

      --
      Gary Gilliam Sumerduck VA, '94 940 Regina 165k '86 240 195k








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      gotta get the red wire 700 1990

      posted by  interstition on  Tue Jan 17 00:01 CST 2006
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      last visit: Mon Apr 28 10:13 CST 2014
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      Others smarter than I have researched this and I believe them. It's a lot of reading, but check out:

      http://brickboard.com/RWD/index.htm?id=791421

      The good news: When you need a fuel pressure regulator, you don't have to buy the $120 one for Rex-Regina, you can use the one for LH 2.4 ($35?).
      --
      Andy in St. Paul. '89 244 153K mi, '91 745 Regina 206K, '88 244 184K








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        And the Other Good News.... 700 1990

        posted by  Chris Mullet on  Tue Jan 17 00:57 CST 2006
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        last visit: Fri Oct 24 09:08 CST 2014
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        You will NEVER buy an Air Mass Meter, and you only have one fuel pump to poop out.

        It's true the Regina O2 sensors are more expensive, but I believe they are known for lasting longer than the Bosch units. Make certain you really need one before purchasing. Or you may even want to try one from a wrecking yard if you can get it for a song and have the time to mess with it.








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          And the Other Good News.... 700 1990

          posted by  interstition on  Tue Jan 17 02:01 CST 2006
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          last visit: Mon Apr 28 10:13 CST 2014
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          The Pick-n-Pull I go to is great. Except that they cut the catalytic converters out of every car before it goes in the lot (I guess they like platinum) and so all I ever find for O2 sensors on the Regina cars is dangling red, black and white wires.








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            And the Other Good News.... 700 1990

            posted by  Rhaj on  Tue Jan 17 08:06 CST 2006
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            last visit: Tue May 1 16:25 CST 2007
            [RELATED]

            Pulling the Cats. is a Federal requirement. Not sure the reasoning, but a lot of what happens in D.C. is confusing to me...








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              And the Other Good News.... 700 1990

              posted by  interstition on  Tue Jan 17 11:31 CST 2006
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              last visit: Mon Apr 28 10:13 CST 2014
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              I suppose because one of us just might think it would be OK to install a perfectly good used cat on one of our cars rather than leave on the just as used one most of us are running now. Thank goodness they save us from ourselves.
              --
              Andy in St. Paul. '89 244 153K mi, '91 745 Regina 206K, '88 244 184K







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