The O2 sensors are heated and should last indefinately. Most of ours
have well over 100K on them, however one finally died at 180K miles on
the '91. Replace it when it breaks. Bosch makes a good unit as does Mopar.
If you lose the post cat O2S it will set a MIL (Maint. Indicator Light,
aka "Check Engine") code because it uses that to confirm the operation
of the cat. Shouldn't effect the running condition but it will have
that nasty light on the dash. The PCM uses the two pre-cat O2S for
closed loop monitoring and will give you poor mileage and other issues
if one goes. Don't worry now, just save your $$$ and do it when one
gives out on you.
Kevin
Chris Reck wrote:
> In response to my own post...
>
> I see several O2 sensors out there. Should I worry about it when it breaks
> or replace it now now with a good known brand? Which brand (and part #)
> should I go with?
>
> I don't really need to worry about the emissions one (I don't have emissions
> testing where I am at here in Mid-Illinois).
>
> Chris
>
>
>
> ""Chris Reck"" <creck@insightbb.com> wrote in message
> news:btd7es$rb4$1@bent.twistedbits.net...
>
>>Thanks for the suggestions. I'd look in my owners manual as well as the
>>Haynes/Chilton manuals if I could find them.
>>
>>I have not checked the IAC nor the Distributor yet. Serp belt, tranny
>>fluid, coolant fluid all have been changed on schedule. I have not
>
> replaced
>
>>the hoses yet. Hope to have them last until the spring to change them.
>>Then maybe change the thermostat out.
>>
>>The axle fluids is one area that I have neglected for a while. They will
>>get changed at the next oil change.
>>
>>I have noticed that I have a very minor oil seepage problem off the
>>passenger engine block. Is this easily fixable?
>>
>>Chris
>>
>>
>>
>>""Bernd D. Ratsch"" <fasstdak@hotmail.com> wrote in message
>>news:000001c3d3fc$d49798b0$020aa8c0@system...
>>
>>>Make sure you check if you're in Schedule "A" or "B" for the maintenance
>>>schedule. (Look in your owners manual for that.)
>>>
>>>- Bernd
>>>
>>>-----Original Message-----
>>>From: owner-dakota-truck@bent.twistedbits.net
>>>[mailto:owner-dakota-truck@bent.twistedbits.net] On Behalf Of Tony
>>
> Cellana
>
>>>Sent: Monday, January 05, 2004 7:56 PM
>>>To: dakota-truck@dakota-truck.net
>>>Subject: DML: Re: Maintainence time...
>>>
>>>
>>>
>>>Serp belt, hoses, coolant, tranny fluid, coolant, rear axle
>>>fluid............. TonyC
>>>
>>>
>>>-----Original Message-----
>>>From: Chris Reck <creck@insightbb.com>
>>>To: dakota-truck-moderator@bent.twistedbits.net
>>><dakota-truck-moderator@bent.twistedbits.net>
>>>Date: Monday, January 05, 2004 6:51 PM
>>>Subject: DML: Maintainence time...
>>>
>>>
>>>
>>>>It's 75,000 miles and I've decided to finally get some things replaced
>>>>that I've neglected doing over the past couple of years.
>>>>
>>>>I've had the PCV valve replaced at 61,000 and the Transmission speed
>>>>sensor at 55,000 miles. Besides the O2 sensor, spark plugs, and fluids,
>>>>is there anything else that I need to check enginewise?
>>>>
>>>>This stems from having 1/2" of ice on the drivers side mirror and my
>>>>wonderful patience in chipping it off. It has a spider crack on it now
>>>>and I need to get a new one. Luckily for me, I can order just the
>>>>glass.
>>>>
>>>>Chris Reck
>>>>Bloomington, IL
>>>>
>>>>'99 Dakota Sport + CC 4x4 V6 (Deep Amethyst)
>>>>Shaved and polished V8 TB, Autolite 3923, 7.5mm Bosch plug wires,
>>>>Custom
>>>
>>>K&N
>>>
>>>>6x9 air intake,
>>>>Rancho RSX shocks, Pioneer full audio system, BF Goodrich 32x11.5r15
>>>>T/A KO tires
>>>>
>>>>
>>>>
>>>
>>
>
>
--
Kevin Sellstrom, W6KTB E-Mail:ksellstr@softcom.net
***Wilton, California***
'99 Dodge Dakota CC, 4x4, 5.2,
'69 Dodge D200, 4x2, 318,
Also: '83 Volvo 244Ti, '85 Volvo 244, '68 Volvo 122S, '98 Specialized
Rockhopper A1FS
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