85 caprice acceleration hesitation 10-30
Rebuilt trans in 2014 rebuilt 4.3 v6 3/2017 car was idling rough abd boggin. Took to mechanic
who did adjustments on idle .told me i n=d to change tps,iac valve,map sensor. I changed map,
iac. Idle is not so rough still have to warm car up with acceleration to avoid backfire. Previous
engine(same type) had blow gasket on freeway old engine have valveseal leak would kick up
blue smoke after startup.im thinkng i should change cat,o2,tps,iat . Any advice? No codes
popped up on diagnosis with jumper on obd1 port(a to b)
check for vacuum leaks if it has not been done...
Mechanic who replace engine will check the valves this weekend any advice on what sensors to change. My cat and egr valve,tps sensor are stock .my old engine would kick up blue smoke wondering if i should change cat? Overall what sensors should i cange that might affect performance.
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