NJFBOA - Home of New Jersey's Camaros and Firebirds - View Single Post - Tach reads 2500-3000 at idle.... Trans shifts too soon.

V · 12-02-2008, 12:21 PM

afaik, an 84 should not have a VSS, The birds first got them in 85, camaros in 90.
an improper signal from the tach to the ecm MAY be causing the shifting issue. i'd try to get a cheap spare tach and run it off the coil/dizzy to see exactly what the motor is doing and go from there.

12-02-2008, 12:21 PM	#2
V Stalker Join Date: Aug 2004 Posts: 12,082 iTrader: (12)	afaik, an 84 should not have a VSS, The birds first got them in 85, camaros in 90. an improper signal from the tach to the ecm MAY be causing the shifting issue. i'd try to get a cheap spare tach and run it off the coil/dizzy to see exactly what the motor is doing and go from there. Last edited by V; 12-02-2008 at 12:21 PM.