Does anybody know how to read the timing notches in terms of degrees? The numbers on mine are corroded away and I'm not sure the Chilton guide is accurate.

Also, is it normal for the idle to fluctuate slightly when you start it after disconnecting the EST bypass?

And is it normal for the SES light to come on after you disconnect the EST bypass?

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92 Camaro RS LO3, 5-spd, T-tops
Performance:
SLP 1 3/4" Headers (Coated by Paul Barry Motorsports), Flowmaster Catback Exhaust, Fastchip Performance PROM, Centerforce Dual Friction Clutch, Xact 8mm wires, Open Air Element w/K&N Filter, Z28 Grille w/aftmkt fog lamps
Electronics:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers.
NEXT UP: TBI mods, Edelbrock performer intake

 

Not too sure about your question about notches on the timing indicator, but it is normal for the SES light to come on when you disconnect the ESC connector. If you run a scanner while it's disconnected you'd see that it was throwing an ESC error code (not sure on the number).

-Mark W.
'88 SC Camaro w/ 305 TBI

 

I took a quick look at my timing marker. If you are standing facing the engine the marker has 4 points, from left to right the first point is 12 degrees advanced, next is 8, next is 4 and next is retard 4 degrees. Zero is the indent between the to 4 degree markers.

Hope this helps.

MD

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1991 305 TBI Paxton SN2000,Edelbrock intake and TES, Turbo city TBI,
MSD6a,Eibach drag lauch kit, Hotchkis RTAs and panhard rod, Richmond 3:73 gears and Auburn limited slip, best ET 12.90 @ 108 mph