On Sat, 4 Aug 2018 03:40:47 -0000 (UTC), Arlen Holder
wrote:

On 3 Aug 2018 19:55:41 GMT, Clare Snyder wrote:

That is possible - definitely check for leaks - but now at least he
knows if the light comes on again he DOES have a problem. The sensor
definitely needed to be fixed, either way.

Unfortunately I don't remember the code. But it was related to the oxygen
sensor, but I should have written it down. P0133 perhaps? I don't remember
though. So I apologize not to be able to provide that fact to you.


If it was P0133 it means slow response - definitely a bad sensoe

The good news is that a new code, if it pops up, will tell me something
since the sensor is new (and they don't last forever).

800 RPM hot idle does not necessarily sound like a problem - and a
bad sensor cannot get the computer to adjust the mixture properly.

I agree. The 800 is fine as an idle speed. But it does stall. So, there's
something wrong when it transitions from cold to warm. Dunno what yet. A
cost-effective smoke machine is something I've always wanted ...

(I built one, but it sucks.)

Need to check the block learn readings etc to know for sure , but too
rich or too lean should give rich or lean codes, not out of range
codes. Out of range means voltage higher or lower than normal
operating range, and generally static - not clocking. Too lean means
violtage higher than optimum - too rich means voltage too low .

As I recall, there were no misfire codes and no lean condition codes.
Just the O2 code (might have been a cat code, I wish I remembered it.)

Too lean would generally be a P0171, or P0174.
Too rich would be P0172 or P0175.

Yup. None of those. Since I own a bimmer that is almost two decades old, I
know all about lean condition codes.

This code was cat or sensor specific. But let's see if it comes back.


A bad sensor would generallly be a P0130 to P0170 - but other problems
can cause these codes as well.

Yup. Chasing codes is always fun. Not.