90q 20v Running Rich

[David Thoresen]

I have noticed that the multifunction sensor has been pretty cold.... I just
put it in a few months and it never goes over 1/3 way up... Always thought
that was weird.. Or perhaps I should check a different sensor?

Ciao!
SP

>
> First, make sure everything else is OK.
>
> I would start with the temperature sensors and make sure they are all
> functioning correctly.
>
> On the 10V 4kq, I would suspect a faulty engine temperature sensor, one that
> is reading cold.  The temperature sensor tells the ECU to run rich (Think
> Choke) while the engine is cold.
>
> I'm pretty sure the 20V will have a similar system.
>
> Best,
>
> Bernard Littau
> Woodinville, WA
> '86 4kq