Tom Coulter <metalshop@optonline.net> wrote:
> Thanks for your notes, Jon, though I wish I'd heard sooner. Based on
> Brian's earlier post, I went ahead and visited oxygensensors.com and ordered
> BOTH sensors: Walker, for $41.90 (front) and $54.90 (rear). I posted
> "Seems like the next step is to replace both and see if the nagging code
> clears." and hadn't heard anyone "stop" me.
Sorry about that - can't catch 'em all! :-) It didn't dawn on me
until then that you had mentioned replacing both sensors. I'm not an
encyclopeda or anything, but I didn't recall an O2 sensor code which
flagged both at once. (This makes sense from a diagnostic perspective
also - with one code for each sensor the mechanic knows which one is
the problem.) Sorry, it just didn't strike me until I was replying to
your last post there.
> BTW, the local dealer wanted
> $110 apiece for each one (MOPAR). All local parts stores carried the
> dubious Bosch sensors (oddly, the AutoZone guy agreed w/ the bad karma
> toward the Bosch units).
Ouch. :-) And people wonder why some folks refer to them as
"stealerships". ;-) The exact same part is $30 cheaper at Wyckoff.
I must admit that I don't know how it works behind the scenes, but I
would expect each dealership pays about the same for Mopar parts when
buying from Chrysler...
> I appreciate your scoping OEM at Wyckoff Chrysler but, as I said, I went w/
> the Walker units (they're on the way here).
On the plus side, that's a really good price for the sensors, so
even if you don't need the downstream one right away, chances are
you'll need it eventually. (And with inflation about to skyrocket,
its probably cheaper to buy it now than later anyway...) ;-)
> Interesting that you thought it was only the UPstream sensor. In my earlier
> post, I said:
> Now let's turn to the Check Engine message I mentioned. I pulled the code
> and it's P0132 (O2 Sensor Circuit High Voltage). Sensor 1 & 2 on Bank 1
> read "1000V 0% S.T. fuel trim". This strikes me as a possible short.
> "Sensor 1 & 2 on Bank 1"
> This seemed (and still seems) like TWO sensors, though the error message
> relayed to the scan tool may be cryptic.
Yep, I don't believe that description is correct. The part about
high voltage is right, but P0132 is a standard OBDII code which refers
to bank 1, sensor 1, and a manufacturer can't just change the meaning
of the code without violating the standard. Possibly the database in
your code reader has a typo or is just incorrect.
> You said:
> If the downstream sensor were doing the same thing you would have gotten a
> P0138 code as well.
> Very interesting, and you may well be right, but this isn't what I got; only
> the P0132 code that, when I went to the test tab, gave the info I listed
> above.
Yep, P0138 is the same thing as P0132 except it refers to bank 1
sensor 2, which on a Dak with only 2 oxygen sensors is the downstream
(post cat) sensor.
> Where does that leave us? Install the upstream sensor and see if the code
> clears? If it does, hang the other one on a nail for next time?
Yep, if 'twere me, that's exactly what I would do. You could check
into the possibility of returning the other sensor or eBaying it or
something, but you'll probably be out some money either way, and as I
mentioned earlier, even if you don't need the downstream sensor now,
if you hang onto the truck long enough, you'll need to replace it
eventually.
--
-Jon-
.- Jon Steiger -- jon@dakota-truck.net or jon@jonsteiger.com -.
| '96 Kolb Firefly, '96 Suzuki Intruder, Miscellaneous Mopars |
`-------------------------------- http://www.jonsteiger.com --'
This archive was generated by hypermail 2b29 : Mon Jun 01 2009 - 00:37:01 EDT