Hey, gang. Happy Friday.

Recently, I changed AT oil and filter and was eager to know if I had, at the
same time, fixed weeping oil filth. So, I took La Vana Blanca for an
engine/trans/diff wash at the local self-serve carwash. I soaked it all up
with the engine cleaning selection and then blasted it all with the
"powerwash" device. I did all of this with the engine running under the
premise that if I got anything sufficiently wet enough to make it shut down,
it would be good to know right away. Nice, clean engine and trans, no prob,
drove home.

Long story short, I have since not been able to start the engine without
coaxing the throttle a bit. It will not hold idle when cold. After coming up
to operating temp, it will idle but at about 850 rpm and a little bit lumpy.
My question of the collective experience is: what is the most likely
component to cause this condition under the conditions described above? BTW,
the engine was running very nicely prior to this folly.

Cheers and thanks for any wisdom you can offer.

--
mordo
1990 Carat
2.1l WBX, AT, 171k miles