Sporatic timing and still advances even with tss wire unpluged...
04-25-2007, 07:47 PM
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Car: 90 Chev Suburban 4x4, 5.3L, th400
Engine: 2002 5.3 Vortec swapped in.
Transmission: Stock th400
Axle/Gears: 10blt front/ 14bltSF rear 3.73 gears.
Sporatic timing and still advances even with tss wire unpluged...
So I was just goofing around with my timing trying to iron out an idle issue i have. With the TSS(right?) wire unpluged, and the timing set at 4*It still bounces around slightly. Also with the wire un pluged, if i rev it up a little the timing goes up to around 10-12* then comes back down like a centrifigul(sp?) advance. Is that normal?
04-26-2007, 08:26 AM
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Car: 88 Camaro SC
Engine: SFI'd 350
Transmission: TKO 500
Axle/Gears: 9-bolt w/ 3.23's
Re: Sporatic timing and still advances even with tss wire unpluged...
Theres some base timing advance within the dist. itself due to how the pickup works, so there will be a little advance. It should be steady, or nearly steady. If not, the dist. gear may be worn or the dist. may need to be shimmed back to spec.
04-26-2007, 01:13 PM
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Car: 90 Chev Suburban 4x4, 5.3L, th400
Engine: 2002 5.3 Vortec swapped in.
Transmission: Stock th400
Axle/Gears: 10blt front/ 14bltSF rear 3.73 gears.
Re: Sporatic timing and still advances even with tss wire unpluged...
Well it does have a new cam and dist in it, but that dosnt mean that the dist is shimmed preoperly.
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