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Home >> Chevrolet >> 1988 >> Hi-Cube 6.2 J, 475/M40 >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - TBI >> Adjustments >> TPS >> 2.8L Only
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2.8L Only

Connect digital voltmeter between TPS connector terminals "A" and "B" using jumper wires. With ignition on and engine stopped, TPS voltage should be between .42 and .54 volt. Rotate TPS to obtain correct voltage reading. If voltage cannot be adjusted to proper specification, replace TPS.