Do the 2005 3.3L V6s now have a pair of 'wide band' oxygen sensors for the upstream/downstream of catalytic converter combination?
The 'Check Engine' light is lit on my Mother's
2005 Town and Country 3.3L,
and the DTC comes up P0032
which maybe a burnt out internal 12 volt heater element in the upstream oxygen sensor.
{is it possible the PCM computer is just 'confused' about the heater circuit because the FSM says the PCM computer's RAM memory has to be cleared prior to driving after replacement}
I am assuming that I will have to replace this oxygen sensor even if just the heater is bad,
but in reading the official Chrysler 2005 FSM on the T&C minivan,
the section on the oxygen sensors now gives the 'normal voltage' 14.7 air to fuel ratio as 2.5 volts,
and the 'rich' a/f as 3.5 volts,
which I guess means this not the inexpensive old fashioned 'narrow band' oxygen sensor with its 0-1 volt range.
Instead of throwing this partially defective wide band oxygen sensor away,
can mount it in a weld-on bung in the exhaust pipe of another vehicle,
and read it with a high impedance volt meter,
as a
poor man's wide band air to fuel ratio meter ?
If the exhaust gets up to typical temperatures,
will this version of a wide band oxygen sensor
read correct values,
or is the internal 12 volt heater critical to correct readings even after the engine has warmed up? (the FSM says the PCM computer has an output line that 'pulse width modulates' the heater element)
Anyone know how high the input impedance of a DC volt meter has to be not to load down this style oxygen sensor?
Anyone know of table online that lists
voltage versus air to fuel ratio
for this manufacturer's wide band oxygen sensor?
Rockauto lists
DENSO Part # 2344410 early production
DENSO Part # 2344880 later than 07/09/04
and rockauto says
Denso is the original equipment manufacturer
NTK Part # 23566
and others are also listed
