RE: Help - Code for 94 90Q

["Buchholz, Steven" <Steven.Buchholz@kla-tencor.com>]

> Code 2111 is the engine speed sensor. If it goes bad, the engine
> will continue to run (I think by using alternate data, such as
> cam and crank position to derive RPM). However, the engine will
> not start with a bad RPM sensor.

... no ... the engine's "speed sensor" is the one that is looking at the
flywheel teeth ... and provides the precise position information used for
firing the plugs.  The engine cannot run without it.  As I have been
experiencing on the PT (3.6l v8) over the past couple days ... the tach will
drop to -0- if the speed sender stops working.  The V8 doesn't need the
flywheel "reference sender" (the one that indicates TDC) to start and/or
run, and I would imagine that the V6 would have the same characteristic.  At
least the 2111 code is quite familar to me ...

Steve Buchholz
San Jose, CA (USA)