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Old 02-08-2002, 03:03 PM
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sixto sixto is offline
smoke gets in your eyes
Join Date: Jun 2000
Location: SF Bay Area
Posts: 20,114
A bad monovalve will provide some heat at low engine speed and little to no heat at high engine speed. It takes a few minutes to check your monovalve so it's hardly worth speculating.

Do a search on monovalve and username sixto. Also check out One of the albums has photos of how to get to the monovalve.

91 300SE
81 300SD
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