[T3] thermostat issue
Bryon Garvin
spinningrooves at gmail.com
Fri Oct 14 11:29:06 PDT 2011
I am not sure how long this has been going on, but I suspect not very long.
My flaps don't seem to be moving. This was all properly adjusted some time
ago with a new thermostat and I have all of the linkage, fortunately.
I made a mark on the shaft so I could tell if it was turning or not. Not a
cut on the end like some of you do because I haven't had the engine out
before. But anyway, this mark showed that the rod was turning.
My Fastback will sometimes idle-hunt for about 1 minute as I leave the
neighborhood on a cool morning. Runs fine when you press the accelerator,
but at a stop sign it will surge up and down. Car runs great when warm.
But today, the hunting continued for much longer than it usually does. It
eventually stopped but I was thinking about this problem while driving and I
wondered if the thermostat was working. I got to work which is only 3-4
miles away and looked at the mark. I can't remember if the position of the
mark meant "open" or "closed" but came back an hour later to inspect and the
thermostat was retracted, yet the mark didn't move. So, I am looking at the
flaps being either open or closed and I can't remember like I said, what the
mark meant (stupid move, I know).
Is the most likely scenario here that the adjustment nut that holds the
throttle flap rod has loosened ? I will have to look into this this
weekend. I think I have the adjustment procedure saved somewhere so I will
review that. I hope the spring isn't broken. I assume anything beyond this
nut coming loose would require dropping the engine to remove tin and see
what is going on? I adjusted it all before by blinding working in the
access hole when you remove the "goggle" piece.
- Bryon, '71 Fastback
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