Quote:
Originally Posted by Alvin
The “traffic signal” ported vacuum switch is referred to as the “EFE & EGR TVV” aka “TVV valve” in the “Street Tuning The Trans AM” information I had previously posted. There have been GM part #s and photos posted on PY in the past. At this time I do not have that information available. Perhaps Rocky Rotella, 2Many, etc. can provide that information?
Also a detail note: I noticed your gas cap appears to be an aftermarket part. No intention to nit-pick, wanted to provide you what the OEM style looks like. See #9864N in the illustration below for the correct gas cap.
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Look closely here and you can see the "Bright Blue" TVV on this engine - back side of alternator - behind T-Stat housing:
Larger image of same photo link:
http://2.bp.blogspot.com/-cKQ2b0_1i6...W72+engine.jpg
Blog hosting images above
http://phscollectorcarworld.blogspot...codes-and.html
EDIT: Here's another large view of a TVV
http://www.wallpaperup.com/uploads/w...d75274b76c.jpg
And a similar TVV on a 1977 Pontiac Can Am below
