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95 Sierra 350 tbi



I have a 95 Sierra 350 tbi which when in drive surgeses when I hold the break at an idle as well once the motor warms up I get a off fluff fluff sound from the passenger side exhaust it's true dual from the headers back has rebuilt heads on it as well with new valves what could be the issue

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Clean out your TB and replace or clean the IAC valve,and unplug the TPS sensor to see if the idle changes,same with the EGR valve while the motor is running push the EGR valve in to see if the idle lowers.

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