I'm getting a little tired of posting this, so for one last time.
Originally Posted by skeezix
After replacing the thermostat I was browsing through my repair manual and noticed that the jiggle valve must be up plus-or-minus 15 degrees. I don't recall in which position I installed the thermostat.
How important is the location of the jiggle valve and if it is not up what will happen?
The Toyota FSM gives that spec for the 4 cyls and "down" (6:00) for the 3.4.
It is has been widely documented on this and many other forums that placing it "up" on the 3.4 results in about a 10* increase in the ECT sensor reading.
Read this entire
thread before commenting. http://www.yotatech.com/f2/5vz-fe-ru...81/index2.html
FSM for the 3.4