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timing/car vibrating/no power

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Old 06-03-2012, 08:50 PM
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timing/car vibrating/no power

all stock 1989 350 iroc-z with mild cam upgrade
just replaced maf sensor, tps sensor, and distributer

i found TDC and when trying to time the car, i set it at 8* btdc with est unplugged with aldl jumped, it vibrates and has loss of power when driving down the block.

what could be causing this?
Old 06-05-2012, 11:32 AM
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Car: 1979 Malibu
Engine: Blown LSx
Transmission: T56 Magnum
Axle/Gears: 9"/wavetrac/35's/3.70
Re: timing/car vibrating/no power

Make sure the firing order is correct, 18436572, CW rotation. Factory timing should also be set at 6* BTDC. Is the car throwing any codes?
Old 06-05-2012, 06:12 PM
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Car: 1985 Trans Am
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Re: timing/car vibrating/no power

Originally Posted by chingon01
all stock 1989 350 iroc-z with mild cam upgrade
just replaced maf sensor, tps sensor, and distributer

i found TDC and when trying to time the car, i set it at 8* btdc with est unplugged with aldl jumped, it vibrates and has loss of power when driving down the block.

what could be causing this?
I just had a similar issue with my 85 T/A. What I thought was my timing actually turned out to be my plug wires. Had 3 completely melted through. As the guy said before me, check the firing order and your plug wires.
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