Re: Oxygen Sensor Solutions



hhc314@xxxxxxxxx wrote:

Eeyore wrote:
hhc...@xxxxxxxxx wrote:
All quite true.

No. nonsense.

Replacement oxygen sensors for most vehicles are
available on eBay, and trivial to replace since they generally screw
in to some location on the exhaust manifold or exhaust pipe, with snap-
on electrical connectors.

So they don't regulate 'oxygen flow' to the engine AT ALL. They control the
richness of the mixture by examining the oxygen content in the exhaust which
is another thing entirely. Also called Lamda sensors.

http://en.wikipedia.org/wiki/Oxygen_sensor

The air flow INTO the engine is measured by the *air mass meter*.

Graham

So Graham, as I previously posted, how does a layman mechanic discover
if it is the oxygen sensor (which is indeed located in the exhaust
system) or if if the "air mass meter" (which has a different name here
in the US) , or which other of the other 10 or so sensors is
malfunctioning?

The LAYMAN doesn't.

You take it to a tech with the appropriate diagnostic kit that usually simply
plugs into the car's data bus and interrogates the ECU.

Since when did the LAYMAN change the jets in carburettors or re-tune them to any
meaninful degree of accuracy either ?

Graham

.

Relevant Pages

  • Re: Oxygen Sensor Solutions
    ... on the exhaust manifold or exhaust pipe, ... Also called Lamda sensors. ... The air flow INTO the engine is measured by the *air mass meter*. ... Engine Control Units often use a bang-bang strategy, ...
    (sci.energy.hydrogen)
  • Re: Oxygen Sensor Solutions
    ... in to some location on the exhaust manifold or exhaust pipe, ... Also called Lamda sensors. ... I know most of you know what and EGR valve is, ... The car stalled whenever it came to a stop. ...
    (sci.energy.hydrogen)
  • Re: Whats oxygen sensor?
    ... An oxygen sensor does what its name suggests - it senses the presence of oxygen in the exhaust and sends varying voltage to the electronic control unit, depending on the amount of oxygen in the exhaust. ... A modern Camry with a 4 cylinder engine will have 2 O2 sensors and one with a 6 cylinder engine will have 4 O2 sensors. ...
    (alt.autos.toyota)
  • Re: VW Lambda Sensor Problem
    ... Plus all that could be caused by an air leak, in either the inlet system ... I have rough tickover and lack of low end power and a slight exhaust ... could another fault destroy lambda sensors. ...
    (uk.rec.cars.maintenance)
  • Re: MIL = P0420
    ... The dealer won't analyze it either. ... a good OBDII scanner you should be able to analyze the)2 sensors. ... The dealer's remedy was to replace two exhaust 'donuts'. ... the original muffler and there is no rattling that I know of... ...
    (rec.autos.makers.honda)
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