Well, I was in Mexico all of last week, but that is not why I am sweating.

On the way to work this morning I had constant hot air blowing from my vents!

My first thought was my monovalve gave up after 25 years. Is this the only or just the likely culprit?

From my searches, it seems rebuilding is the way to go. Any recommendations? Or is my recollection of previous readings faulty and it is not the monovalve causing my constant heat?

tia,

Tim

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2009 VW TDI Jetta Sportwagon 172k miles (rear-ended harder than Elton John on 8/4/13. Total loss)

1991 Volvo 240 142k miles (T-boned by a stop sign runner. Total loss)